--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.base/share/classes/java/lang/Class.java Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,3838 @@
+/*
+ * Copyright (c) 1994, 2017, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package java.lang;
+
+import java.lang.annotation.Annotation;
+import java.lang.module.ModuleReader;
+import java.lang.ref.SoftReference;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.ObjectStreamField;
+import java.lang.reflect.AnnotatedElement;
+import java.lang.reflect.AnnotatedType;
+import java.lang.reflect.Array;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Executable;
+import java.lang.reflect.Field;
+import java.lang.reflect.GenericArrayType;
+import java.lang.reflect.GenericDeclaration;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Member;
+import java.lang.reflect.Method;
+import java.lang.reflect.Modifier;
+import java.lang.reflect.Proxy;
+import java.lang.reflect.Type;
+import java.lang.reflect.TypeVariable;
+import java.net.URL;
+import java.security.AccessController;
+import java.security.PrivilegedAction;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Set;
+import java.util.StringJoiner;
+
+import jdk.internal.HotSpotIntrinsicCandidate;
+import jdk.internal.loader.BootLoader;
+import jdk.internal.loader.BuiltinClassLoader;
+import jdk.internal.misc.Unsafe;
+import jdk.internal.misc.VM;
+import jdk.internal.module.Resources;
+import jdk.internal.reflect.CallerSensitive;
+import jdk.internal.reflect.ConstantPool;
+import jdk.internal.reflect.Reflection;
+import jdk.internal.reflect.ReflectionFactory;
+import jdk.internal.vm.annotation.ForceInline;
+import sun.reflect.generics.factory.CoreReflectionFactory;
+import sun.reflect.generics.factory.GenericsFactory;
+import sun.reflect.generics.repository.ClassRepository;
+import sun.reflect.generics.repository.MethodRepository;
+import sun.reflect.generics.repository.ConstructorRepository;
+import sun.reflect.generics.scope.ClassScope;
+import sun.security.util.SecurityConstants;
+import sun.reflect.annotation.*;
+import sun.reflect.misc.ReflectUtil;
+
+/**
+ * Instances of the class {@code Class} represent classes and
+ * interfaces in a running Java application. An enum is a kind of
+ * class and an annotation is a kind of interface. Every array also
+ * belongs to a class that is reflected as a {@code Class} object
+ * that is shared by all arrays with the same element type and number
+ * of dimensions. The primitive Java types ({@code boolean},
+ * {@code byte}, {@code char}, {@code short},
+ * {@code int}, {@code long}, {@code float}, and
+ * {@code double}), and the keyword {@code void} are also
+ * represented as {@code Class} objects.
+ *
+ * <p> {@code Class} has no public constructor. Instead {@code Class}
+ * objects are constructed automatically by the Java Virtual Machine as classes
+ * are loaded and by calls to the {@code defineClass} method in the class
+ * loader.
+ *
+ * <p> The following example uses a {@code Class} object to print the
+ * class name of an object:
+ *
+ * <blockquote><pre>
+ * void printClassName(Object obj) {
+ * System.out.println("The class of " + obj +
+ * " is " + obj.getClass().getName());
+ * }
+ * </pre></blockquote>
+ *
+ * <p> It is also possible to get the {@code Class} object for a named
+ * type (or for void) using a class literal. See Section 15.8.2 of
+ * <cite>The Java™ Language Specification</cite>.
+ * For example:
+ *
+ * <blockquote>
+ * {@code System.out.println("The name of class Foo is: "+Foo.class.getName());}
+ * </blockquote>
+ *
+ * @param <T> the type of the class modeled by this {@code Class}
+ * object. For example, the type of {@code String.class} is {@code
+ * Class<String>}. Use {@code Class<?>} if the class being modeled is
+ * unknown.
+ *
+ * @author unascribed
+ * @see java.lang.ClassLoader#defineClass(byte[], int, int)
+ * @since 1.0
+ */
+public final class Class<T> implements java.io.Serializable,
+ GenericDeclaration,
+ Type,
+ AnnotatedElement {
+ private static final int ANNOTATION= 0x00002000;
+ private static final int ENUM = 0x00004000;
+ private static final int SYNTHETIC = 0x00001000;
+
+ private static native void registerNatives();
+ static {
+ registerNatives();
+ }
+
+ /*
+ * Private constructor. Only the Java Virtual Machine creates Class objects.
+ * This constructor is not used and prevents the default constructor being
+ * generated.
+ */
+ private Class(ClassLoader loader, Class<?> arrayComponentType) {
+ // Initialize final field for classLoader. The initialization value of non-null
+ // prevents future JIT optimizations from assuming this final field is null.
+ classLoader = loader;
+ componentType = arrayComponentType;
+ }
+
+ /**
+ * Converts the object to a string. The string representation is the
+ * string "class" or "interface", followed by a space, and then by the
+ * fully qualified name of the class in the format returned by
+ * {@code getName}. If this {@code Class} object represents a
+ * primitive type, this method returns the name of the primitive type. If
+ * this {@code Class} object represents void this method returns
+ * "void". If this {@code Class} object represents an array type,
+ * this method returns "class " followed by {@code getName}.
+ *
+ * @return a string representation of this class object.
+ */
+ public String toString() {
+ return (isInterface() ? "interface " : (isPrimitive() ? "" : "class "))
+ + getName();
+ }
+
+ /**
+ * Returns a string describing this {@code Class}, including
+ * information about modifiers and type parameters.
+ *
+ * The string is formatted as a list of type modifiers, if any,
+ * followed by the kind of type (empty string for primitive types
+ * and {@code class}, {@code enum}, {@code interface}, or
+ * <code>@</code>{@code interface}, as appropriate), followed
+ * by the type's name, followed by an angle-bracketed
+ * comma-separated list of the type's type parameters, if any.
+ *
+ * A space is used to separate modifiers from one another and to
+ * separate any modifiers from the kind of type. The modifiers
+ * occur in canonical order. If there are no type parameters, the
+ * type parameter list is elided.
+ *
+ * For an array type, the string starts with the type name,
+ * followed by an angle-bracketed comma-separated list of the
+ * type's type parameters, if any, followed by a sequence of
+ * {@code []} characters, one set of brackets per dimension of
+ * the array.
+ *
+ * <p>Note that since information about the runtime representation
+ * of a type is being generated, modifiers not present on the
+ * originating source code or illegal on the originating source
+ * code may be present.
+ *
+ * @return a string describing this {@code Class}, including
+ * information about modifiers and type parameters
+ *
+ * @since 1.8
+ */
+ public String toGenericString() {
+ if (isPrimitive()) {
+ return toString();
+ } else {
+ StringBuilder sb = new StringBuilder();
+ Class<?> component = this;
+ int arrayDepth = 0;
+
+ if (isArray()) {
+ do {
+ arrayDepth++;
+ component = component.getComponentType();
+ } while (component.isArray());
+ sb.append(component.getName());
+ } else {
+ // Class modifiers are a superset of interface modifiers
+ int modifiers = getModifiers() & Modifier.classModifiers();
+ if (modifiers != 0) {
+ sb.append(Modifier.toString(modifiers));
+ sb.append(' ');
+ }
+
+ if (isAnnotation()) {
+ sb.append('@');
+ }
+ if (isInterface()) { // Note: all annotation types are interfaces
+ sb.append("interface");
+ } else {
+ if (isEnum())
+ sb.append("enum");
+ else
+ sb.append("class");
+ }
+ sb.append(' ');
+ sb.append(getName());
+ }
+
+ TypeVariable<?>[] typeparms = component.getTypeParameters();
+ if (typeparms.length > 0) {
+ StringJoiner sj = new StringJoiner(",", "<", ">");
+ for(TypeVariable<?> typeparm: typeparms) {
+ sj.add(typeparm.getTypeName());
+ }
+ sb.append(sj.toString());
+ }
+
+ for (int i = 0; i < arrayDepth; i++)
+ sb.append("[]");
+
+ return sb.toString();
+ }
+ }
+
+ /**
+ * Returns the {@code Class} object associated with the class or
+ * interface with the given string name. Invoking this method is
+ * equivalent to:
+ *
+ * <blockquote>
+ * {@code Class.forName(className, true, currentLoader)}
+ * </blockquote>
+ *
+ * where {@code currentLoader} denotes the defining class loader of
+ * the current class.
+ *
+ * <p> For example, the following code fragment returns the
+ * runtime {@code Class} descriptor for the class named
+ * {@code java.lang.Thread}:
+ *
+ * <blockquote>
+ * {@code Class t = Class.forName("java.lang.Thread")}
+ * </blockquote>
+ * <p>
+ * A call to {@code forName("X")} causes the class named
+ * {@code X} to be initialized.
+ *
+ * @param className the fully qualified name of the desired class.
+ * @return the {@code Class} object for the class with the
+ * specified name.
+ * @exception LinkageError if the linkage fails
+ * @exception ExceptionInInitializerError if the initialization provoked
+ * by this method fails
+ * @exception ClassNotFoundException if the class cannot be located
+ */
+ @CallerSensitive
+ public static Class<?> forName(String className)
+ throws ClassNotFoundException {
+ Class<?> caller = Reflection.getCallerClass();
+ return forName0(className, true, ClassLoader.getClassLoader(caller), caller);
+ }
+
+
+ /**
+ * Returns the {@code Class} object associated with the class or
+ * interface with the given string name, using the given class loader.
+ * Given the fully qualified name for a class or interface (in the same
+ * format returned by {@code getName}) this method attempts to
+ * locate, load, and link the class or interface. The specified class
+ * loader is used to load the class or interface. If the parameter
+ * {@code loader} is null, the class is loaded through the bootstrap
+ * class loader. The class is initialized only if the
+ * {@code initialize} parameter is {@code true} and if it has
+ * not been initialized earlier.
+ *
+ * <p> If {@code name} denotes a primitive type or void, an attempt
+ * will be made to locate a user-defined class in the unnamed package whose
+ * name is {@code name}. Therefore, this method cannot be used to
+ * obtain any of the {@code Class} objects representing primitive
+ * types or void.
+ *
+ * <p> If {@code name} denotes an array class, the component type of
+ * the array class is loaded but not initialized.
+ *
+ * <p> For example, in an instance method the expression:
+ *
+ * <blockquote>
+ * {@code Class.forName("Foo")}
+ * </blockquote>
+ *
+ * is equivalent to:
+ *
+ * <blockquote>
+ * {@code Class.forName("Foo", true, this.getClass().getClassLoader())}
+ * </blockquote>
+ *
+ * Note that this method throws errors related to loading, linking or
+ * initializing as specified in Sections 12.2, 12.3 and 12.4 of <em>The
+ * Java Language Specification</em>.
+ * Note that this method does not check whether the requested class
+ * is accessible to its caller.
+ *
+ * @param name fully qualified name of the desired class
+ * @param initialize if {@code true} the class will be initialized.
+ * See Section 12.4 of <em>The Java Language Specification</em>.
+ * @param loader class loader from which the class must be loaded
+ * @return class object representing the desired class
+ *
+ * @exception LinkageError if the linkage fails
+ * @exception ExceptionInInitializerError if the initialization provoked
+ * by this method fails
+ * @exception ClassNotFoundException if the class cannot be located by
+ * the specified class loader
+ * @exception SecurityException
+ * if a security manager is present, and the {@code loader} is
+ * {@code null}, and the caller's class loader is not
+ * {@code null}, and the caller does not have the
+ * {@link RuntimePermission}{@code ("getClassLoader")}
+ *
+ * @see java.lang.Class#forName(String)
+ * @see java.lang.ClassLoader
+ * @since 1.2
+ */
+ @CallerSensitive
+ public static Class<?> forName(String name, boolean initialize,
+ ClassLoader loader)
+ throws ClassNotFoundException
+ {
+ Class<?> caller = null;
+ SecurityManager sm = System.getSecurityManager();
+ if (sm != null) {
+ // Reflective call to get caller class is only needed if a security manager
+ // is present. Avoid the overhead of making this call otherwise.
+ caller = Reflection.getCallerClass();
+ if (loader == null) {
+ ClassLoader ccl = ClassLoader.getClassLoader(caller);
+ if (ccl != null) {
+ sm.checkPermission(
+ SecurityConstants.GET_CLASSLOADER_PERMISSION);
+ }
+ }
+ }
+ return forName0(name, initialize, loader, caller);
+ }
+
+ /** Called after security check for system loader access checks have been made. */
+ private static native Class<?> forName0(String name, boolean initialize,
+ ClassLoader loader,
+ Class<?> caller)
+ throws ClassNotFoundException;
+
+
+ /**
+ * Returns the {@code Class} with the given <a href="ClassLoader.html#name">
+ * binary name</a> in the given module.
+ *
+ * <p> This method attempts to locate, load, and link the class or interface.
+ * It does not run the class initializer. If the class is not found, this
+ * method returns {@code null}. </p>
+ *
+ * <p> If the class loader of the given module defines other modules and
+ * the given name is a class defined in a different module, this method
+ * returns {@code null} after the class is loaded. </p>
+ *
+ * <p> This method does not check whether the requested class is
+ * accessible to its caller. </p>
+ *
+ * @apiNote
+ * This method returns {@code null} on failure rather than
+ * throwing a {@link ClassNotFoundException}, as is done by
+ * the {@link #forName(String, boolean, ClassLoader)} method.
+ * The security check is a stack-based permission check if the caller
+ * loads a class in another module.
+ *
+ * @param module A module
+ * @param name The <a href="ClassLoader.html#name">binary name</a>
+ * of the class
+ * @return {@code Class} object of the given name defined in the given module;
+ * {@code null} if not found.
+ *
+ * @throws NullPointerException if the given module or name is {@code null}
+ *
+ * @throws LinkageError if the linkage fails
+ *
+ * @throws SecurityException
+ * <ul>
+ * <li> if the caller is not the specified module and
+ * {@code RuntimePermission("getClassLoader")} permission is denied; or</li>
+ * <li> access to the module content is denied. For example,
+ * permission check will be performed when a class loader calls
+ * {@link ModuleReader#open(String)} to read the bytes of a class file
+ * in a module.</li>
+ * </ul>
+ *
+ * @since 9
+ * @spec JPMS
+ */
+ @CallerSensitive
+ public static Class<?> forName(Module module, String name) {
+ Objects.requireNonNull(module);
+ Objects.requireNonNull(name);
+
+ ClassLoader cl;
+ SecurityManager sm = System.getSecurityManager();
+ if (sm != null) {
+ Class<?> caller = Reflection.getCallerClass();
+ if (caller != null && caller.getModule() != module) {
+ // if caller is null, Class.forName is the last java frame on the stack.
+ // java.base has all permissions
+ sm.checkPermission(SecurityConstants.GET_CLASSLOADER_PERMISSION);
+ }
+ PrivilegedAction<ClassLoader> pa = module::getClassLoader;
+ cl = AccessController.doPrivileged(pa);
+ } else {
+ cl = module.getClassLoader();
+ }
+
+ if (cl != null) {
+ return cl.loadClass(module, name);
+ } else {
+ return BootLoader.loadClass(module, name);
+ }
+ }
+
+ /**
+ * Creates a new instance of the class represented by this {@code Class}
+ * object. The class is instantiated as if by a {@code new}
+ * expression with an empty argument list. The class is initialized if it
+ * has not already been initialized.
+ *
+ * @deprecated This method propagates any exception thrown by the
+ * nullary constructor, including a checked exception. Use of
+ * this method effectively bypasses the compile-time exception
+ * checking that would otherwise be performed by the compiler.
+ * The {@link
+ * java.lang.reflect.Constructor#newInstance(java.lang.Object...)
+ * Constructor.newInstance} method avoids this problem by wrapping
+ * any exception thrown by the constructor in a (checked) {@link
+ * java.lang.reflect.InvocationTargetException}.
+ *
+ * <p>The call
+ *
+ * <pre>{@code
+ * clazz.newInstance()
+ * }</pre>
+ *
+ * can be replaced by
+ *
+ * <pre>{@code
+ * clazz.getDeclaredConstructor().newInstance()
+ * }</pre>
+ *
+ * The latter sequence of calls is inferred to be able to throw
+ * the additional exception types {@link
+ * InvocationTargetException} and {@link
+ * NoSuchMethodException}. Both of these exception types are
+ * subclasses of {@link ReflectiveOperationException}.
+ *
+ * @return a newly allocated instance of the class represented by this
+ * object.
+ * @throws IllegalAccessException if the class or its nullary
+ * constructor is not accessible.
+ * @throws InstantiationException
+ * if this {@code Class} represents an abstract class,
+ * an interface, an array class, a primitive type, or void;
+ * or if the class has no nullary constructor;
+ * or if the instantiation fails for some other reason.
+ * @throws ExceptionInInitializerError if the initialization
+ * provoked by this method fails.
+ * @throws SecurityException
+ * If a security manager, <i>s</i>, is present and
+ * the caller's class loader is not the same as or an
+ * ancestor of the class loader for the current class and
+ * invocation of {@link SecurityManager#checkPackageAccess
+ * s.checkPackageAccess()} denies access to the package
+ * of this class.
+ */
+ @CallerSensitive
+ @Deprecated(since="9")
+ public T newInstance()
+ throws InstantiationException, IllegalAccessException
+ {
+ SecurityManager sm = System.getSecurityManager();
+ if (sm != null) {
+ checkMemberAccess(sm, Member.PUBLIC, Reflection.getCallerClass(), false);
+ }
+
+ // NOTE: the following code may not be strictly correct under
+ // the current Java memory model.
+
+ // Constructor lookup
+ if (cachedConstructor == null) {
+ if (this == Class.class) {
+ throw new IllegalAccessException(
+ "Can not call newInstance() on the Class for java.lang.Class"
+ );
+ }
+ try {
+ Class<?>[] empty = {};
+ final Constructor<T> c = getReflectionFactory().copyConstructor(
+ getConstructor0(empty, Member.DECLARED));
+ // Disable accessibility checks on the constructor
+ // since we have to do the security check here anyway
+ // (the stack depth is wrong for the Constructor's
+ // security check to work)
+ java.security.AccessController.doPrivileged(
+ new java.security.PrivilegedAction<>() {
+ public Void run() {
+ c.setAccessible(true);
+ return null;
+ }
+ });
+ cachedConstructor = c;
+ } catch (NoSuchMethodException e) {
+ throw (InstantiationException)
+ new InstantiationException(getName()).initCause(e);
+ }
+ }
+ Constructor<T> tmpConstructor = cachedConstructor;
+ // Security check (same as in java.lang.reflect.Constructor)
+ Class<?> caller = Reflection.getCallerClass();
+ if (newInstanceCallerCache != caller) {
+ int modifiers = tmpConstructor.getModifiers();
+ Reflection.ensureMemberAccess(caller, this, this, modifiers);
+ newInstanceCallerCache = caller;
+ }
+ // Run constructor
+ try {
+ return tmpConstructor.newInstance((Object[])null);
+ } catch (InvocationTargetException e) {
+ Unsafe.getUnsafe().throwException(e.getTargetException());
+ // Not reached
+ return null;
+ }
+ }
+ private transient volatile Constructor<T> cachedConstructor;
+ private transient volatile Class<?> newInstanceCallerCache;
+
+
+ /**
+ * Determines if the specified {@code Object} is assignment-compatible
+ * with the object represented by this {@code Class}. This method is
+ * the dynamic equivalent of the Java language {@code instanceof}
+ * operator. The method returns {@code true} if the specified
+ * {@code Object} argument is non-null and can be cast to the
+ * reference type represented by this {@code Class} object without
+ * raising a {@code ClassCastException.} It returns {@code false}
+ * otherwise.
+ *
+ * <p> Specifically, if this {@code Class} object represents a
+ * declared class, this method returns {@code true} if the specified
+ * {@code Object} argument is an instance of the represented class (or
+ * of any of its subclasses); it returns {@code false} otherwise. If
+ * this {@code Class} object represents an array class, this method
+ * returns {@code true} if the specified {@code Object} argument
+ * can be converted to an object of the array class by an identity
+ * conversion or by a widening reference conversion; it returns
+ * {@code false} otherwise. If this {@code Class} object
+ * represents an interface, this method returns {@code true} if the
+ * class or any superclass of the specified {@code Object} argument
+ * implements this interface; it returns {@code false} otherwise. If
+ * this {@code Class} object represents a primitive type, this method
+ * returns {@code false}.
+ *
+ * @param obj the object to check
+ * @return true if {@code obj} is an instance of this class
+ *
+ * @since 1.1
+ */
+ @HotSpotIntrinsicCandidate
+ public native boolean isInstance(Object obj);
+
+
+ /**
+ * Determines if the class or interface represented by this
+ * {@code Class} object is either the same as, or is a superclass or
+ * superinterface of, the class or interface represented by the specified
+ * {@code Class} parameter. It returns {@code true} if so;
+ * otherwise it returns {@code false}. If this {@code Class}
+ * object represents a primitive type, this method returns
+ * {@code true} if the specified {@code Class} parameter is
+ * exactly this {@code Class} object; otherwise it returns
+ * {@code false}.
+ *
+ * <p> Specifically, this method tests whether the type represented by the
+ * specified {@code Class} parameter can be converted to the type
+ * represented by this {@code Class} object via an identity conversion
+ * or via a widening reference conversion. See <em>The Java Language
+ * Specification</em>, sections 5.1.1 and 5.1.4 , for details.
+ *
+ * @param cls the {@code Class} object to be checked
+ * @return the {@code boolean} value indicating whether objects of the
+ * type {@code cls} can be assigned to objects of this class
+ * @exception NullPointerException if the specified Class parameter is
+ * null.
+ * @since 1.1
+ */
+ @HotSpotIntrinsicCandidate
+ public native boolean isAssignableFrom(Class<?> cls);
+
+
+ /**
+ * Determines if the specified {@code Class} object represents an
+ * interface type.
+ *
+ * @return {@code true} if this object represents an interface;
+ * {@code false} otherwise.
+ */
+ @HotSpotIntrinsicCandidate
+ public native boolean isInterface();
+
+
+ /**
+ * Determines if this {@code Class} object represents an array class.
+ *
+ * @return {@code true} if this object represents an array class;
+ * {@code false} otherwise.
+ * @since 1.1
+ */
+ @HotSpotIntrinsicCandidate
+ public native boolean isArray();
+
+
+ /**
+ * Determines if the specified {@code Class} object represents a
+ * primitive type.
+ *
+ * <p> There are nine predefined {@code Class} objects to represent
+ * the eight primitive types and void. These are created by the Java
+ * Virtual Machine, and have the same names as the primitive types that
+ * they represent, namely {@code boolean}, {@code byte},
+ * {@code char}, {@code short}, {@code int},
+ * {@code long}, {@code float}, and {@code double}.
+ *
+ * <p> These objects may only be accessed via the following public static
+ * final variables, and are the only {@code Class} objects for which
+ * this method returns {@code true}.
+ *
+ * @return true if and only if this class represents a primitive type
+ *
+ * @see java.lang.Boolean#TYPE
+ * @see java.lang.Character#TYPE
+ * @see java.lang.Byte#TYPE
+ * @see java.lang.Short#TYPE
+ * @see java.lang.Integer#TYPE
+ * @see java.lang.Long#TYPE
+ * @see java.lang.Float#TYPE
+ * @see java.lang.Double#TYPE
+ * @see java.lang.Void#TYPE
+ * @since 1.1
+ */
+ @HotSpotIntrinsicCandidate
+ public native boolean isPrimitive();
+
+ /**
+ * Returns true if this {@code Class} object represents an annotation
+ * type. Note that if this method returns true, {@link #isInterface()}
+ * would also return true, as all annotation types are also interfaces.
+ *
+ * @return {@code true} if this class object represents an annotation
+ * type; {@code false} otherwise
+ * @since 1.5
+ */
+ public boolean isAnnotation() {
+ return (getModifiers() & ANNOTATION) != 0;
+ }
+
+ /**
+ * Returns {@code true} if this class is a synthetic class;
+ * returns {@code false} otherwise.
+ * @return {@code true} if and only if this class is a synthetic class as
+ * defined by the Java Language Specification.
+ * @jls 13.1 The Form of a Binary
+ * @since 1.5
+ */
+ public boolean isSynthetic() {
+ return (getModifiers() & SYNTHETIC) != 0;
+ }
+
+ /**
+ * Returns the name of the entity (class, interface, array class,
+ * primitive type, or void) represented by this {@code Class} object,
+ * as a {@code String}.
+ *
+ * <p> If this class object represents a reference type that is not an
+ * array type then the binary name of the class is returned, as specified
+ * by
+ * <cite>The Java™ Language Specification</cite>.
+ *
+ * <p> If this class object represents a primitive type or void, then the
+ * name returned is a {@code String} equal to the Java language
+ * keyword corresponding to the primitive type or void.
+ *
+ * <p> If this class object represents a class of arrays, then the internal
+ * form of the name consists of the name of the element type preceded by
+ * one or more '{@code [}' characters representing the depth of the array
+ * nesting. The encoding of element type names is as follows:
+ *
+ * <blockquote><table class="striped">
+ * <caption style="display:none">Element types and encodings</caption>
+ * <thead>
+ * <tr><th scope="col"> Element Type <th scope="col"> Encoding
+ * </thead>
+ * <tbody style="text-align:left">
+ * <tr><th scope="row"> boolean <td style="text-align:center"> Z
+ * <tr><th scope="row"> byte <td style="text-align:center"> B
+ * <tr><th scope="row"> char <td style="text-align:center"> C
+ * <tr><th scope="row"> class or interface
+ * <td style="text-align:center"> L<i>classname</i>;
+ * <tr><th scope="row"> double <td style="text-align:center"> D
+ * <tr><th scope="row"> float <td style="text-align:center"> F
+ * <tr><th scope="row"> int <td style="text-align:center"> I
+ * <tr><th scope="row"> long <td style="text-align:center"> J
+ * <tr><th scope="row"> short <td style="text-align:center"> S
+ * </tbody>
+ * </table></blockquote>
+ *
+ * <p> The class or interface name <i>classname</i> is the binary name of
+ * the class specified above.
+ *
+ * <p> Examples:
+ * <blockquote><pre>
+ * String.class.getName()
+ * returns "java.lang.String"
+ * byte.class.getName()
+ * returns "byte"
+ * (new Object[3]).getClass().getName()
+ * returns "[Ljava.lang.Object;"
+ * (new int[3][4][5][6][7][8][9]).getClass().getName()
+ * returns "[[[[[[[I"
+ * </pre></blockquote>
+ *
+ * @return the name of the class or interface
+ * represented by this object.
+ */
+ public String getName() {
+ String name = this.name;
+ if (name == null)
+ this.name = name = getName0();
+ return name;
+ }
+
+ // cache the name to reduce the number of calls into the VM
+ private transient String name;
+ private native String getName0();
+
+ /**
+ * Returns the class loader for the class. Some implementations may use
+ * null to represent the bootstrap class loader. This method will return
+ * null in such implementations if this class was loaded by the bootstrap
+ * class loader.
+ *
+ * <p>If this object
+ * represents a primitive type or void, null is returned.
+ *
+ * @return the class loader that loaded the class or interface
+ * represented by this object.
+ * @throws SecurityException
+ * if a security manager is present, and the caller's class loader
+ * is not {@code null} and is not the same as or an ancestor of the
+ * class loader for the class whose class loader is requested,
+ * and the caller does not have the
+ * {@link RuntimePermission}{@code ("getClassLoader")}
+ * @see java.lang.ClassLoader
+ * @see SecurityManager#checkPermission
+ * @see java.lang.RuntimePermission
+ */
+ @CallerSensitive
+ @ForceInline // to ensure Reflection.getCallerClass optimization
+ public ClassLoader getClassLoader() {
+ ClassLoader cl = getClassLoader0();
+ if (cl == null)
+ return null;
+ SecurityManager sm = System.getSecurityManager();
+ if (sm != null) {
+ ClassLoader.checkClassLoaderPermission(cl, Reflection.getCallerClass());
+ }
+ return cl;
+ }
+
+ // Package-private to allow ClassLoader access
+ ClassLoader getClassLoader0() { return classLoader; }
+
+ /**
+ * Returns the module that this class or interface is a member of.
+ *
+ * If this class represents an array type then this method returns the
+ * {@code Module} for the element type. If this class represents a
+ * primitive type or void, then the {@code Module} object for the
+ * {@code java.base} module is returned.
+ *
+ * If this class is in an unnamed module then the {@link
+ * ClassLoader#getUnnamedModule() unnamed} {@code Module} of the class
+ * loader for this class is returned.
+ *
+ * @return the module that this class or interface is a member of
+ *
+ * @since 9
+ * @spec JPMS
+ */
+ public Module getModule() {
+ return module;
+ }
+
+ // set by VM
+ private transient Module module;
+
+ // Initialized in JVM not by private constructor
+ // This field is filtered from reflection access, i.e. getDeclaredField
+ // will throw NoSuchFieldException
+ private final ClassLoader classLoader;
+
+ /**
+ * Returns an array of {@code TypeVariable} objects that represent the
+ * type variables declared by the generic declaration represented by this
+ * {@code GenericDeclaration} object, in declaration order. Returns an
+ * array of length 0 if the underlying generic declaration declares no type
+ * variables.
+ *
+ * @return an array of {@code TypeVariable} objects that represent
+ * the type variables declared by this generic declaration
+ * @throws java.lang.reflect.GenericSignatureFormatError if the generic
+ * signature of this generic declaration does not conform to
+ * the format specified in
+ * <cite>The Java™ Virtual Machine Specification</cite>
+ * @since 1.5
+ */
+ @SuppressWarnings("unchecked")
+ public TypeVariable<Class<T>>[] getTypeParameters() {
+ ClassRepository info = getGenericInfo();
+ if (info != null)
+ return (TypeVariable<Class<T>>[])info.getTypeParameters();
+ else
+ return (TypeVariable<Class<T>>[])new TypeVariable<?>[0];
+ }
+
+
+ /**
+ * Returns the {@code Class} representing the direct superclass of the
+ * entity (class, interface, primitive type or void) represented by
+ * this {@code Class}. If this {@code Class} represents either the
+ * {@code Object} class, an interface, a primitive type, or void, then
+ * null is returned. If this object represents an array class then the
+ * {@code Class} object representing the {@code Object} class is
+ * returned.
+ *
+ * @return the direct superclass of the class represented by this object
+ */
+ @HotSpotIntrinsicCandidate
+ public native Class<? super T> getSuperclass();
+
+
+ /**
+ * Returns the {@code Type} representing the direct superclass of
+ * the entity (class, interface, primitive type or void) represented by
+ * this {@code Class}.
+ *
+ * <p>If the superclass is a parameterized type, the {@code Type}
+ * object returned must accurately reflect the actual type
+ * parameters used in the source code. The parameterized type
+ * representing the superclass is created if it had not been
+ * created before. See the declaration of {@link
+ * java.lang.reflect.ParameterizedType ParameterizedType} for the
+ * semantics of the creation process for parameterized types. If
+ * this {@code Class} represents either the {@code Object}
+ * class, an interface, a primitive type, or void, then null is
+ * returned. If this object represents an array class then the
+ * {@code Class} object representing the {@code Object} class is
+ * returned.
+ *
+ * @throws java.lang.reflect.GenericSignatureFormatError if the generic
+ * class signature does not conform to the format specified in
+ * <cite>The Java™ Virtual Machine Specification</cite>
+ * @throws TypeNotPresentException if the generic superclass
+ * refers to a non-existent type declaration
+ * @throws java.lang.reflect.MalformedParameterizedTypeException if the
+ * generic superclass refers to a parameterized type that cannot be
+ * instantiated for any reason
+ * @return the direct superclass of the class represented by this object
+ * @since 1.5
+ */
+ public Type getGenericSuperclass() {
+ ClassRepository info = getGenericInfo();
+ if (info == null) {
+ return getSuperclass();
+ }
+
+ // Historical irregularity:
+ // Generic signature marks interfaces with superclass = Object
+ // but this API returns null for interfaces
+ if (isInterface()) {
+ return null;
+ }
+
+ return info.getSuperclass();
+ }
+
+ /**
+ * Gets the package of this class.
+ *
+ * <p>If this class represents an array type, a primitive type or void,
+ * this method returns {@code null}.
+ *
+ * @return the package of this class.
+ * @revised 9
+ * @spec JPMS
+ */
+ public Package getPackage() {
+ if (isPrimitive() || isArray()) {
+ return null;
+ }
+ ClassLoader cl = getClassLoader0();
+ return cl != null ? cl.definePackage(this)
+ : BootLoader.definePackage(this);
+ }
+
+ /**
+ * Returns the fully qualified package name.
+ *
+ * <p> If this class is a top level class, then this method returns the fully
+ * qualified name of the package that the class is a member of, or the
+ * empty string if the class is in an unnamed package.
+ *
+ * <p> If this class is a member class, then this method is equivalent to
+ * invoking {@code getPackageName()} on the {@link #getEnclosingClass
+ * enclosing class}.
+ *
+ * <p> If this class is a {@link #isLocalClass local class} or an {@link
+ * #isAnonymousClass() anonymous class}, then this method is equivalent to
+ * invoking {@code getPackageName()} on the {@link #getDeclaringClass
+ * declaring class} of the {@link #getEnclosingMethod enclosing method} or
+ * {@link #getEnclosingConstructor enclosing constructor}.
+ *
+ * <p> If this class represents an array type then this method returns the
+ * package name of the element type. If this class represents a primitive
+ * type or void then the package name "{@code java.lang}" is returned.
+ *
+ * @return the fully qualified package name
+ *
+ * @since 9
+ * @spec JPMS
+ * @jls 6.7 Fully Qualified Names
+ */
+ public String getPackageName() {
+ String pn = this.packageName;
+ if (pn == null) {
+ Class<?> c = this;
+ while (c.isArray()) {
+ c = c.getComponentType();
+ }
+ if (c.isPrimitive()) {
+ pn = "java.lang";
+ } else {
+ String cn = c.getName();
+ int dot = cn.lastIndexOf('.');
+ pn = (dot != -1) ? cn.substring(0, dot).intern() : "";
+ }
+ this.packageName = pn;
+ }
+ return pn;
+ }
+
+ // cached package name
+ private transient String packageName;
+
+ /**
+ * Returns the interfaces directly implemented by the class or interface
+ * represented by this object.
+ *
+ * <p>If this object represents a class, the return value is an array
+ * containing objects representing all interfaces directly implemented by
+ * the class. The order of the interface objects in the array corresponds
+ * to the order of the interface names in the {@code implements} clause of
+ * the declaration of the class represented by this object. For example,
+ * given the declaration:
+ * <blockquote>
+ * {@code class Shimmer implements FloorWax, DessertTopping { ... }}
+ * </blockquote>
+ * suppose the value of {@code s} is an instance of
+ * {@code Shimmer}; the value of the expression:
+ * <blockquote>
+ * {@code s.getClass().getInterfaces()[0]}
+ * </blockquote>
+ * is the {@code Class} object that represents interface
+ * {@code FloorWax}; and the value of:
+ * <blockquote>
+ * {@code s.getClass().getInterfaces()[1]}
+ * </blockquote>
+ * is the {@code Class} object that represents interface
+ * {@code DessertTopping}.
+ *
+ * <p>If this object represents an interface, the array contains objects
+ * representing all interfaces directly extended by the interface. The
+ * order of the interface objects in the array corresponds to the order of
+ * the interface names in the {@code extends} clause of the declaration of
+ * the interface represented by this object.
+ *
+ * <p>If this object represents a class or interface that implements no
+ * interfaces, the method returns an array of length 0.
+ *
+ * <p>If this object represents a primitive type or void, the method
+ * returns an array of length 0.
+ *
+ * <p>If this {@code Class} object represents an array type, the
+ * interfaces {@code Cloneable} and {@code java.io.Serializable} are
+ * returned in that order.
+ *
+ * @return an array of interfaces directly implemented by this class
+ */
+ public Class<?>[] getInterfaces() {
+ // defensively copy before handing over to user code
+ return getInterfaces(true);
+ }
+
+ private Class<?>[] getInterfaces(boolean cloneArray) {
+ ReflectionData<T> rd = reflectionData();
+ if (rd == null) {
+ // no cloning required
+ return getInterfaces0();
+ } else {
+ Class<?>[] interfaces = rd.interfaces;
+ if (interfaces == null) {
+ interfaces = getInterfaces0();
+ rd.interfaces = interfaces;
+ }
+ // defensively copy if requested
+ return cloneArray ? interfaces.clone() : interfaces;
+ }
+ }
+
+ private native Class<?>[] getInterfaces0();
+
+ /**
+ * Returns the {@code Type}s representing the interfaces
+ * directly implemented by the class or interface represented by
+ * this object.
+ *
+ * <p>If a superinterface is a parameterized type, the
+ * {@code Type} object returned for it must accurately reflect
+ * the actual type parameters used in the source code. The
+ * parameterized type representing each superinterface is created
+ * if it had not been created before. See the declaration of
+ * {@link java.lang.reflect.ParameterizedType ParameterizedType}
+ * for the semantics of the creation process for parameterized
+ * types.
+ *
+ * <p>If this object represents a class, the return value is an array
+ * containing objects representing all interfaces directly implemented by
+ * the class. The order of the interface objects in the array corresponds
+ * to the order of the interface names in the {@code implements} clause of
+ * the declaration of the class represented by this object.
+ *
+ * <p>If this object represents an interface, the array contains objects
+ * representing all interfaces directly extended by the interface. The
+ * order of the interface objects in the array corresponds to the order of
+ * the interface names in the {@code extends} clause of the declaration of
+ * the interface represented by this object.
+ *
+ * <p>If this object represents a class or interface that implements no
+ * interfaces, the method returns an array of length 0.
+ *
+ * <p>If this object represents a primitive type or void, the method
+ * returns an array of length 0.
+ *
+ * <p>If this {@code Class} object represents an array type, the
+ * interfaces {@code Cloneable} and {@code java.io.Serializable} are
+ * returned in that order.
+ *
+ * @throws java.lang.reflect.GenericSignatureFormatError
+ * if the generic class signature does not conform to the format
+ * specified in
+ * <cite>The Java™ Virtual Machine Specification</cite>
+ * @throws TypeNotPresentException if any of the generic
+ * superinterfaces refers to a non-existent type declaration
+ * @throws java.lang.reflect.MalformedParameterizedTypeException
+ * if any of the generic superinterfaces refer to a parameterized
+ * type that cannot be instantiated for any reason
+ * @return an array of interfaces directly implemented by this class
+ * @since 1.5
+ */
+ public Type[] getGenericInterfaces() {
+ ClassRepository info = getGenericInfo();
+ return (info == null) ? getInterfaces() : info.getSuperInterfaces();
+ }
+
+
+ /**
+ * Returns the {@code Class} representing the component type of an
+ * array. If this class does not represent an array class this method
+ * returns null.
+ *
+ * @return the {@code Class} representing the component type of this
+ * class if this class is an array
+ * @see java.lang.reflect.Array
+ * @since 1.1
+ */
+ public Class<?> getComponentType() {
+ // Only return for array types. Storage may be reused for Class for instance types.
+ if (isArray()) {
+ return componentType;
+ } else {
+ return null;
+ }
+ }
+
+ private final Class<?> componentType;
+
+
+ /**
+ * Returns the Java language modifiers for this class or interface, encoded
+ * in an integer. The modifiers consist of the Java Virtual Machine's
+ * constants for {@code public}, {@code protected},
+ * {@code private}, {@code final}, {@code static},
+ * {@code abstract} and {@code interface}; they should be decoded
+ * using the methods of class {@code Modifier}.
+ *
+ * <p> If the underlying class is an array class, then its
+ * {@code public}, {@code private} and {@code protected}
+ * modifiers are the same as those of its component type. If this
+ * {@code Class} represents a primitive type or void, its
+ * {@code public} modifier is always {@code true}, and its
+ * {@code protected} and {@code private} modifiers are always
+ * {@code false}. If this object represents an array class, a
+ * primitive type or void, then its {@code final} modifier is always
+ * {@code true} and its interface modifier is always
+ * {@code false}. The values of its other modifiers are not determined
+ * by this specification.
+ *
+ * <p> The modifier encodings are defined in <em>The Java Virtual Machine
+ * Specification</em>, table 4.1.
+ *
+ * @return the {@code int} representing the modifiers for this class
+ * @see java.lang.reflect.Modifier
+ * @since 1.1
+ */
+ @HotSpotIntrinsicCandidate
+ public native int getModifiers();
+
+
+ /**
+ * Gets the signers of this class.
+ *
+ * @return the signers of this class, or null if there are no signers. In
+ * particular, this method returns null if this object represents
+ * a primitive type or void.
+ * @since 1.1
+ */
+ public native Object[] getSigners();
+
+
+ /**
+ * Set the signers of this class.
+ */
+ native void setSigners(Object[] signers);
+
+
+ /**
+ * If this {@code Class} object represents a local or anonymous
+ * class within a method, returns a {@link
+ * java.lang.reflect.Method Method} object representing the
+ * immediately enclosing method of the underlying class. Returns
+ * {@code null} otherwise.
+ *
+ * In particular, this method returns {@code null} if the underlying
+ * class is a local or anonymous class immediately enclosed by a type
+ * declaration, instance initializer or static initializer.
+ *
+ * @return the immediately enclosing method of the underlying class, if
+ * that class is a local or anonymous class; otherwise {@code null}.
+ *
+ * @throws SecurityException
+ * If a security manager, <i>s</i>, is present and any of the
+ * following conditions is met:
+ *
+ * <ul>
+ *
+ * <li> the caller's class loader is not the same as the
+ * class loader of the enclosing class and invocation of
+ * {@link SecurityManager#checkPermission
+ * s.checkPermission} method with
+ * {@code RuntimePermission("accessDeclaredMembers")}
+ * denies access to the methods within the enclosing class
+ *
+ * <li> the caller's class loader is not the same as or an
+ * ancestor of the class loader for the enclosing class and
+ * invocation of {@link SecurityManager#checkPackageAccess
+ * s.checkPackageAccess()} denies access to the package
+ * of the enclosing class
+ *
+ * </ul>
+ * @since 1.5
+ */
+ @CallerSensitive
+ public Method getEnclosingMethod() throws SecurityException {
+ EnclosingMethodInfo enclosingInfo = getEnclosingMethodInfo();
+
+ if (enclosingInfo == null)
+ return null;
+ else {
+ if (!enclosingInfo.isMethod())
+ return null;
+
+ MethodRepository typeInfo = MethodRepository.make(enclosingInfo.getDescriptor(),
+ getFactory());
+ Class<?> returnType = toClass(typeInfo.getReturnType());
+ Type [] parameterTypes = typeInfo.getParameterTypes();
+ Class<?>[] parameterClasses = new Class<?>[parameterTypes.length];
+
+ // Convert Types to Classes; returned types *should*
+ // be class objects since the methodDescriptor's used
+ // don't have generics information
+ for(int i = 0; i < parameterClasses.length; i++)
+ parameterClasses[i] = toClass(parameterTypes[i]);
+
+ // Perform access check
+ final Class<?> enclosingCandidate = enclosingInfo.getEnclosingClass();
+ SecurityManager sm = System.getSecurityManager();
+ if (sm != null) {
+ enclosingCandidate.checkMemberAccess(sm, Member.DECLARED,
+ Reflection.getCallerClass(), true);
+ }
+ Method[] candidates = enclosingCandidate.privateGetDeclaredMethods(false);
+
+ /*
+ * Loop over all declared methods; match method name,
+ * number of and type of parameters, *and* return
+ * type. Matching return type is also necessary
+ * because of covariant returns, etc.
+ */
+ ReflectionFactory fact = getReflectionFactory();
+ for (Method m : candidates) {
+ if (m.getName().equals(enclosingInfo.getName()) &&
+ arrayContentsEq(parameterClasses,
+ fact.getExecutableSharedParameterTypes(m))) {
+ // finally, check return type
+ if (m.getReturnType().equals(returnType)) {
+ return fact.copyMethod(m);
+ }
+ }
+ }
+
+ throw new InternalError("Enclosing method not found");
+ }
+ }
+
+ private native Object[] getEnclosingMethod0();
+
+ private EnclosingMethodInfo getEnclosingMethodInfo() {
+ Object[] enclosingInfo = getEnclosingMethod0();
+ if (enclosingInfo == null)
+ return null;
+ else {
+ return new EnclosingMethodInfo(enclosingInfo);
+ }
+ }
+
+ private static final class EnclosingMethodInfo {
+ private final Class<?> enclosingClass;
+ private final String name;
+ private final String descriptor;
+
+ static void validate(Object[] enclosingInfo) {
+ if (enclosingInfo.length != 3)
+ throw new InternalError("Malformed enclosing method information");
+ try {
+ // The array is expected to have three elements:
+
+ // the immediately enclosing class
+ Class<?> enclosingClass = (Class<?>)enclosingInfo[0];
+ assert(enclosingClass != null);
+
+ // the immediately enclosing method or constructor's
+ // name (can be null).
+ String name = (String)enclosingInfo[1];
+
+ // the immediately enclosing method or constructor's
+ // descriptor (null iff name is).
+ String descriptor = (String)enclosingInfo[2];
+ assert((name != null && descriptor != null) || name == descriptor);
+ } catch (ClassCastException cce) {
+ throw new InternalError("Invalid type in enclosing method information", cce);
+ }
+ }
+
+ EnclosingMethodInfo(Object[] enclosingInfo) {
+ validate(enclosingInfo);
+ this.enclosingClass = (Class<?>)enclosingInfo[0];
+ this.name = (String)enclosingInfo[1];
+ this.descriptor = (String)enclosingInfo[2];
+ }
+
+ boolean isPartial() {
+ return enclosingClass == null || name == null || descriptor == null;
+ }
+
+ boolean isConstructor() { return !isPartial() && "<init>".equals(name); }
+
+ boolean isMethod() { return !isPartial() && !isConstructor() && !"<clinit>".equals(name); }
+
+ Class<?> getEnclosingClass() { return enclosingClass; }
+
+ String getName() { return name; }
+
+ String getDescriptor() { return descriptor; }
+
+ }
+
+ private static Class<?> toClass(Type o) {
+ if (o instanceof GenericArrayType)
+ return Array.newInstance(toClass(((GenericArrayType)o).getGenericComponentType()),
+ 0)
+ .getClass();
+ return (Class<?>)o;
+ }
+
+ /**
+ * If this {@code Class} object represents a local or anonymous
+ * class within a constructor, returns a {@link
+ * java.lang.reflect.Constructor Constructor} object representing
+ * the immediately enclosing constructor of the underlying
+ * class. Returns {@code null} otherwise. In particular, this
+ * method returns {@code null} if the underlying class is a local
+ * or anonymous class immediately enclosed by a type declaration,
+ * instance initializer or static initializer.
+ *
+ * @return the immediately enclosing constructor of the underlying class, if
+ * that class is a local or anonymous class; otherwise {@code null}.
+ * @throws SecurityException
+ * If a security manager, <i>s</i>, is present and any of the
+ * following conditions is met:
+ *
+ * <ul>
+ *
+ * <li> the caller's class loader is not the same as the
+ * class loader of the enclosing class and invocation of
+ * {@link SecurityManager#checkPermission
+ * s.checkPermission} method with
+ * {@code RuntimePermission("accessDeclaredMembers")}
+ * denies access to the constructors within the enclosing class
+ *
+ * <li> the caller's class loader is not the same as or an
+ * ancestor of the class loader for the enclosing class and
+ * invocation of {@link SecurityManager#checkPackageAccess
+ * s.checkPackageAccess()} denies access to the package
+ * of the enclosing class
+ *
+ * </ul>
+ * @since 1.5
+ */
+ @CallerSensitive
+ public Constructor<?> getEnclosingConstructor() throws SecurityException {
+ EnclosingMethodInfo enclosingInfo = getEnclosingMethodInfo();
+
+ if (enclosingInfo == null)
+ return null;
+ else {
+ if (!enclosingInfo.isConstructor())
+ return null;
+
+ ConstructorRepository typeInfo = ConstructorRepository.make(enclosingInfo.getDescriptor(),
+ getFactory());
+ Type [] parameterTypes = typeInfo.getParameterTypes();
+ Class<?>[] parameterClasses = new Class<?>[parameterTypes.length];
+
+ // Convert Types to Classes; returned types *should*
+ // be class objects since the methodDescriptor's used
+ // don't have generics information
+ for(int i = 0; i < parameterClasses.length; i++)
+ parameterClasses[i] = toClass(parameterTypes[i]);
+
+ // Perform access check
+ final Class<?> enclosingCandidate = enclosingInfo.getEnclosingClass();
+ SecurityManager sm = System.getSecurityManager();
+ if (sm != null) {
+ enclosingCandidate.checkMemberAccess(sm, Member.DECLARED,
+ Reflection.getCallerClass(), true);
+ }
+
+ Constructor<?>[] candidates = enclosingCandidate
+ .privateGetDeclaredConstructors(false);
+ /*
+ * Loop over all declared constructors; match number
+ * of and type of parameters.
+ */
+ ReflectionFactory fact = getReflectionFactory();
+ for (Constructor<?> c : candidates) {
+ if (arrayContentsEq(parameterClasses,
+ fact.getExecutableSharedParameterTypes(c))) {
+ return fact.copyConstructor(c);
+ }
+ }
+
+ throw new InternalError("Enclosing constructor not found");
+ }
+ }
+
+
+ /**
+ * If the class or interface represented by this {@code Class} object
+ * is a member of another class, returns the {@code Class} object
+ * representing the class in which it was declared. This method returns
+ * null if this class or interface is not a member of any other class. If
+ * this {@code Class} object represents an array class, a primitive
+ * type, or void,then this method returns null.
+ *
+ * @return the declaring class for this class
+ * @throws SecurityException
+ * If a security manager, <i>s</i>, is present and the caller's
+ * class loader is not the same as or an ancestor of the class
+ * loader for the declaring class and invocation of {@link
+ * SecurityManager#checkPackageAccess s.checkPackageAccess()}
+ * denies access to the package of the declaring class
+ * @since 1.1
+ */
+ @CallerSensitive
+ public Class<?> getDeclaringClass() throws SecurityException {
+ final Class<?> candidate = getDeclaringClass0();
+
+ if (candidate != null) {
+ SecurityManager sm = System.getSecurityManager();
+ if (sm != null) {
+ candidate.checkPackageAccess(sm,
+ ClassLoader.getClassLoader(Reflection.getCallerClass()), true);
+ }
+ }
+ return candidate;
+ }
+
+ private native Class<?> getDeclaringClass0();
+
+
+ /**
+ * Returns the immediately enclosing class of the underlying
+ * class. If the underlying class is a top level class this
+ * method returns {@code null}.
+ * @return the immediately enclosing class of the underlying class
+ * @exception SecurityException
+ * If a security manager, <i>s</i>, is present and the caller's
+ * class loader is not the same as or an ancestor of the class
+ * loader for the enclosing class and invocation of {@link
+ * SecurityManager#checkPackageAccess s.checkPackageAccess()}
+ * denies access to the package of the enclosing class
+ * @since 1.5
+ */
+ @CallerSensitive
+ public Class<?> getEnclosingClass() throws SecurityException {
+ // There are five kinds of classes (or interfaces):
+ // a) Top level classes
+ // b) Nested classes (static member classes)
+ // c) Inner classes (non-static member classes)
+ // d) Local classes (named classes declared within a method)
+ // e) Anonymous classes
+
+
+ // JVM Spec 4.7.7: A class must have an EnclosingMethod
+ // attribute if and only if it is a local class or an
+ // anonymous class.
+ EnclosingMethodInfo enclosingInfo = getEnclosingMethodInfo();
+ Class<?> enclosingCandidate;
+
+ if (enclosingInfo == null) {
+ // This is a top level or a nested class or an inner class (a, b, or c)
+ enclosingCandidate = getDeclaringClass0();
+ } else {
+ Class<?> enclosingClass = enclosingInfo.getEnclosingClass();
+ // This is a local class or an anonymous class (d or e)
+ if (enclosingClass == this || enclosingClass == null)
+ throw new InternalError("Malformed enclosing method information");
+ else
+ enclosingCandidate = enclosingClass;
+ }
+
+ if (enclosingCandidate != null) {
+ SecurityManager sm = System.getSecurityManager();
+ if (sm != null) {
+ enclosingCandidate.checkPackageAccess(sm,
+ ClassLoader.getClassLoader(Reflection.getCallerClass()), true);
+ }
+ }
+ return enclosingCandidate;
+ }
+
+ /**
+ * Returns the simple name of the underlying class as given in the
+ * source code. Returns an empty string if the underlying class is
+ * anonymous.
+ *
+ * <p>The simple name of an array is the simple name of the
+ * component type with "[]" appended. In particular the simple
+ * name of an array whose component type is anonymous is "[]".
+ *
+ * @return the simple name of the underlying class
+ * @since 1.5
+ */
+ public String getSimpleName() {
+ if (isArray())
+ return getComponentType().getSimpleName()+"[]";
+
+ String simpleName = getSimpleBinaryName();
+ if (simpleName == null) { // top level class
+ simpleName = getName();
+ return simpleName.substring(simpleName.lastIndexOf('.')+1); // strip the package name
+ }
+ return simpleName;
+ }
+
+ /**
+ * Return an informative string for the name of this type.
+ *
+ * @return an informative string for the name of this type
+ * @since 1.8
+ */
+ public String getTypeName() {
+ if (isArray()) {
+ try {
+ Class<?> cl = this;
+ int dimensions = 0;
+ while (cl.isArray()) {
+ dimensions++;
+ cl = cl.getComponentType();
+ }
+ StringBuilder sb = new StringBuilder();
+ sb.append(cl.getName());
+ for (int i = 0; i < dimensions; i++) {
+ sb.append("[]");
+ }
+ return sb.toString();
+ } catch (Throwable e) { /*FALLTHRU*/ }
+ }
+ return getName();
+ }
+
+ /**
+ * Returns the canonical name of the underlying class as
+ * defined by the Java Language Specification. Returns null if
+ * the underlying class does not have a canonical name (i.e., if
+ * it is a local or anonymous class or an array whose component
+ * type does not have a canonical name).
+ * @return the canonical name of the underlying class if it exists, and
+ * {@code null} otherwise.
+ * @since 1.5
+ */
+ public String getCanonicalName() {
+ if (isArray()) {
+ String canonicalName = getComponentType().getCanonicalName();
+ if (canonicalName != null)
+ return canonicalName + "[]";
+ else
+ return null;
+ }
+ if (isLocalOrAnonymousClass())
+ return null;
+ Class<?> enclosingClass = getEnclosingClass();
+ if (enclosingClass == null) { // top level class
+ return getName();
+ } else {
+ String enclosingName = enclosingClass.getCanonicalName();
+ if (enclosingName == null)
+ return null;
+ return enclosingName + "." + getSimpleName();
+ }
+ }
+
+ /**
+ * Returns {@code true} if and only if the underlying class
+ * is an anonymous class.
+ *
+ * @return {@code true} if and only if this class is an anonymous class.
+ * @since 1.5
+ */
+ public boolean isAnonymousClass() {
+ return !isArray() && isLocalOrAnonymousClass() &&
+ getSimpleBinaryName0() == null;
+ }
+
+ /**
+ * Returns {@code true} if and only if the underlying class
+ * is a local class.
+ *
+ * @return {@code true} if and only if this class is a local class.
+ * @since 1.5
+ */
+ public boolean isLocalClass() {
+ return isLocalOrAnonymousClass() &&
+ (isArray() || getSimpleBinaryName0() != null);
+ }
+
+ /**
+ * Returns {@code true} if and only if the underlying class
+ * is a member class.
+ *
+ * @return {@code true} if and only if this class is a member class.
+ * @since 1.5
+ */
+ public boolean isMemberClass() {
+ return !isLocalOrAnonymousClass() && getDeclaringClass0() != null;
+ }
+
+ /**
+ * Returns the "simple binary name" of the underlying class, i.e.,
+ * the binary name without the leading enclosing class name.
+ * Returns {@code null} if the underlying class is a top level
+ * class.
+ */
+ private String getSimpleBinaryName() {
+ if (isTopLevelClass())
+ return null;
+ String name = getSimpleBinaryName0();
+ if (name == null) // anonymous class
+ return "";
+ return name;
+ }
+
+ private native String getSimpleBinaryName0();
+
+ /**
+ * Returns {@code true} if this is a top level class. Returns {@code false}
+ * otherwise.
+ */
+ private boolean isTopLevelClass() {
+ return !isLocalOrAnonymousClass() && getDeclaringClass0() == null;
+ }
+
+ /**
+ * Returns {@code true} if this is a local class or an anonymous
+ * class. Returns {@code false} otherwise.
+ */
+ private boolean isLocalOrAnonymousClass() {
+ // JVM Spec 4.7.7: A class must have an EnclosingMethod
+ // attribute if and only if it is a local class or an
+ // anonymous class.
+ return hasEnclosingMethodInfo();
+ }
+
+ private boolean hasEnclosingMethodInfo() {
+ Object[] enclosingInfo = getEnclosingMethod0();
+ if (enclosingInfo != null) {
+ EnclosingMethodInfo.validate(enclosingInfo);
+ return true;
+ }
+ return false;
+ }
+
+ /**
+ * Returns an array containing {@code Class} objects representing all
+ * the public classes and interfaces that are members of the class
+ * represented by this {@code Class} object. This includes public
+ * class and interface members inherited from superclasses and public class
+ * and interface members declared by the class. This method returns an
+ * array of length 0 if this {@code Class} object has no public member
+ * classes or interfaces. This method also returns an array of length 0 if
+ * this {@code Class} object represents a primitive type, an array
+ * class, or void.
+ *
+ * @return the array of {@code Class} objects representing the public
+ * members of this class
+ * @throws SecurityException
+ * If a security manager, <i>s</i>, is present and
+ * the caller's class loader is not the same as or an
+ * ancestor of the class loader for the current class and
+ * invocation of {@link SecurityManager#checkPackageAccess
+ * s.checkPackageAccess()} denies access to the package
+ * of this class.
+ *
+ * @since 1.1
+ */
+ @CallerSensitive
+ public Class<?>[] getClasses() {
+ SecurityManager sm = System.getSecurityManager();
+ if (sm != null) {
+ checkMemberAccess(sm, Member.PUBLIC, Reflection.getCallerClass(), false);
+ }
+
+ // Privileged so this implementation can look at DECLARED classes,
+ // something the caller might not have privilege to do. The code here
+ // is allowed to look at DECLARED classes because (1) it does not hand
+ // out anything other than public members and (2) public member access
+ // has already been ok'd by the SecurityManager.
+
+ return java.security.AccessController.doPrivileged(
+ new java.security.PrivilegedAction<>() {
+ public Class<?>[] run() {
+ List<Class<?>> list = new ArrayList<>();
+ Class<?> currentClass = Class.this;
+ while (currentClass != null) {
+ for (Class<?> m : currentClass.getDeclaredClasses()) {
+ if (Modifier.isPublic(m.getModifiers())) {
+ list.add(m);
+ }
+ }
+ currentClass = currentClass.getSuperclass();
+ }
+ return list.toArray(new Class<?>[0]);
+ }
+ });
+ }
+
+
+ /**
+ * Returns an array containing {@code Field} objects reflecting all
+ * the accessible public fields of the class or interface represented by
+ * this {@code Class} object.
+ *
+ * <p> If this {@code Class} object represents a class or interface with
+ * no accessible public fields, then this method returns an array of length
+ * 0.
+ *
+ * <p> If this {@code Class} object represents a class, then this method
+ * returns the public fields of the class and of all its superclasses and
+ * superinterfaces.
+ *
+ * <p> If this {@code Class} object represents an interface, then this
+ * method returns the fields of the interface and of all its
+ * superinterfaces.
+ *
+ * <p> If this {@code Class} object represents an array type, a primitive
+ * type, or void, then this method returns an array of length 0.
+ *
+ * <p> The elements in the returned array are not sorted and are not in any
+ * particular order.
+ *
+ * @return the array of {@code Field} objects representing the
+ * public fields
+ * @throws SecurityException
+ * If a security manager, <i>s</i>, is present and
+ * the caller's class loader is not the same as or an
+ * ancestor of the class loader for the current class and
+ * invocation of {@link SecurityManager#checkPackageAccess
+ * s.checkPackageAccess()} denies access to the package
+ * of this class.
+ *
+ * @since 1.1
+ * @jls 8.2 Class Members
+ * @jls 8.3 Field Declarations
+ */
+ @CallerSensitive
+ public Field[] getFields() throws SecurityException {
+ SecurityManager sm = System.getSecurityManager();
+ if (sm != null) {
+ checkMemberAccess(sm, Member.PUBLIC, Reflection.getCallerClass(), true);
+ }
+ return copyFields(privateGetPublicFields(null));
+ }
+
+
+ /**
+ * Returns an array containing {@code Method} objects reflecting all the
+ * public methods of the class or interface represented by this {@code
+ * Class} object, including those declared by the class or interface and
+ * those inherited from superclasses and superinterfaces.
+ *
+ * <p> If this {@code Class} object represents an array type, then the
+ * returned array has a {@code Method} object for each of the public
+ * methods inherited by the array type from {@code Object}. It does not
+ * contain a {@code Method} object for {@code clone()}.
+ *
+ * <p> If this {@code Class} object represents an interface then the
+ * returned array does not contain any implicitly declared methods from
+ * {@code Object}. Therefore, if no methods are explicitly declared in
+ * this interface or any of its superinterfaces then the returned array
+ * has length 0. (Note that a {@code Class} object which represents a class
+ * always has public methods, inherited from {@code Object}.)
+ *
+ * <p> The returned array never contains methods with names "{@code <init>}"
+ * or "{@code <clinit>}".
+ *
+ * <p> The elements in the returned array are not sorted and are not in any
+ * particular order.
+ *
+ * <p> Generally, the result is computed as with the following 4 step algorithm.
+ * Let C be the class or interface represented by this {@code Class} object:
+ * <ol>
+ * <li> A union of methods is composed of:
+ * <ol type="a">
+ * <li> C's declared public instance and static methods as returned by
+ * {@link #getDeclaredMethods()} and filtered to include only public
+ * methods.</li>
+ * <li> If C is a class other than {@code Object}, then include the result
+ * of invoking this algorithm recursively on the superclass of C.</li>
+ * <li> Include the results of invoking this algorithm recursively on all
+ * direct superinterfaces of C, but include only instance methods.</li>
+ * </ol></li>
+ * <li> Union from step 1 is partitioned into subsets of methods with same
+ * signature (name, parameter types) and return type.</li>
+ * <li> Within each such subset only the most specific methods are selected.
+ * Let method M be a method from a set of methods with same signature
+ * and return type. M is most specific if there is no such method
+ * N != M from the same set, such that N is more specific than M.
+ * N is more specific than M if:
+ * <ol type="a">
+ * <li> N is declared by a class and M is declared by an interface; or</li>
+ * <li> N and M are both declared by classes or both by interfaces and
+ * N's declaring type is the same as or a subtype of M's declaring type
+ * (clearly, if M's and N's declaring types are the same type, then
+ * M and N are the same method).</li>
+ * </ol></li>
+ * <li> The result of this algorithm is the union of all selected methods from
+ * step 3.</li>
+ * </ol>
+ *
+ * @apiNote There may be more than one method with a particular name
+ * and parameter types in a class because while the Java language forbids a
+ * class to declare multiple methods with the same signature but different
+ * return types, the Java virtual machine does not. This
+ * increased flexibility in the virtual machine can be used to
+ * implement various language features. For example, covariant
+ * returns can be implemented with {@linkplain
+ * java.lang.reflect.Method#isBridge bridge methods}; the bridge
+ * method and the overriding method would have the same
+ * signature but different return types.
+ *
+ * @return the array of {@code Method} objects representing the
+ * public methods of this class
+ * @throws SecurityException
+ * If a security manager, <i>s</i>, is present and
+ * the caller's class loader is not the same as or an
+ * ancestor of the class loader for the current class and
+ * invocation of {@link SecurityManager#checkPackageAccess
+ * s.checkPackageAccess()} denies access to the package
+ * of this class.
+ *
+ * @jls 8.2 Class Members
+ * @jls 8.4 Method Declarations
+ * @since 1.1
+ */
+ @CallerSensitive
+ public Method[] getMethods() throws SecurityException {
+ SecurityManager sm = System.getSecurityManager();
+ if (sm != null) {
+ checkMemberAccess(sm, Member.PUBLIC, Reflection.getCallerClass(), true);
+ }
+ return copyMethods(privateGetPublicMethods());
+ }
+
+
+ /**
+ * Returns an array containing {@code Constructor} objects reflecting
+ * all the public constructors of the class represented by this
+ * {@code Class} object. An array of length 0 is returned if the
+ * class has no public constructors, or if the class is an array class, or
+ * if the class reflects a primitive type or void.
+ *
+ * Note that while this method returns an array of {@code
+ * Constructor<T>} objects (that is an array of constructors from
+ * this class), the return type of this method is {@code
+ * Constructor<?>[]} and <em>not</em> {@code Constructor<T>[]} as
+ * might be expected. This less informative return type is
+ * necessary since after being returned from this method, the
+ * array could be modified to hold {@code Constructor} objects for
+ * different classes, which would violate the type guarantees of
+ * {@code Constructor<T>[]}.
+ *
+ * @return the array of {@code Constructor} objects representing the
+ * public constructors of this class
+ * @throws SecurityException
+ * If a security manager, <i>s</i>, is present and
+ * the caller's class loader is not the same as or an
+ * ancestor of the class loader for the current class and
+ * invocation of {@link SecurityManager#checkPackageAccess
+ * s.checkPackageAccess()} denies access to the package
+ * of this class.
+ *
+ * @since 1.1
+ */
+ @CallerSensitive
+ public Constructor<?>[] getConstructors() throws SecurityException {
+ SecurityManager sm = System.getSecurityManager();
+ if (sm != null) {
+ checkMemberAccess(sm, Member.PUBLIC, Reflection.getCallerClass(), true);
+ }
+ return copyConstructors(privateGetDeclaredConstructors(true));
+ }
+
+
+ /**
+ * Returns a {@code Field} object that reflects the specified public member
+ * field of the class or interface represented by this {@code Class}
+ * object. The {@code name} parameter is a {@code String} specifying the
+ * simple name of the desired field.
+ *
+ * <p> The field to be reflected is determined by the algorithm that
+ * follows. Let C be the class or interface represented by this object:
+ *
+ * <OL>
+ * <LI> If C declares a public field with the name specified, that is the
+ * field to be reflected.</LI>
+ * <LI> If no field was found in step 1 above, this algorithm is applied
+ * recursively to each direct superinterface of C. The direct
+ * superinterfaces are searched in the order they were declared.</LI>
+ * <LI> If no field was found in steps 1 and 2 above, and C has a
+ * superclass S, then this algorithm is invoked recursively upon S.
+ * If C has no superclass, then a {@code NoSuchFieldException}
+ * is thrown.</LI>
+ * </OL>
+ *
+ * <p> If this {@code Class} object represents an array type, then this
+ * method does not find the {@code length} field of the array type.
+ *
+ * @param name the field name
+ * @return the {@code Field} object of this class specified by
+ * {@code name}
+ * @throws NoSuchFieldException if a field with the specified name is
+ * not found.
+ * @throws NullPointerException if {@code name} is {@code null}
+ * @throws SecurityException
+ * If a security manager, <i>s</i>, is present and
+ * the caller's class loader is not the same as or an
+ * ancestor of the class loader for the current class and
+ * invocation of {@link SecurityManager#checkPackageAccess
+ * s.checkPackageAccess()} denies access to the package
+ * of this class.
+ *
+ * @since 1.1
+ * @jls 8.2 Class Members
+ * @jls 8.3 Field Declarations
+ */
+ @CallerSensitive
+ public Field getField(String name)
+ throws NoSuchFieldException, SecurityException {
+ Objects.requireNonNull(name);
+ SecurityManager sm = System.getSecurityManager();
+ if (sm != null) {
+ checkMemberAccess(sm, Member.PUBLIC, Reflection.getCallerClass(), true);
+ }
+ Field field = getField0(name);
+ if (field == null) {
+ throw new NoSuchFieldException(name);
+ }
+ return getReflectionFactory().copyField(field);
+ }
+
+
+ /**
+ * Returns a {@code Method} object that reflects the specified public
+ * member method of the class or interface represented by this
+ * {@code Class} object. The {@code name} parameter is a
+ * {@code String} specifying the simple name of the desired method. The
+ * {@code parameterTypes} parameter is an array of {@code Class}
+ * objects that identify the method's formal parameter types, in declared
+ * order. If {@code parameterTypes} is {@code null}, it is
+ * treated as if it were an empty array.
+ *
+ * <p> If this {@code Class} object represents an array type, then this
+ * method finds any public method inherited by the array type from
+ * {@code Object} except method {@code clone()}.
+ *
+ * <p> If this {@code Class} object represents an interface then this
+ * method does not find any implicitly declared method from
+ * {@code Object}. Therefore, if no methods are explicitly declared in
+ * this interface or any of its superinterfaces, then this method does not
+ * find any method.
+ *
+ * <p> This method does not find any method with name "{@code <init>}" or
+ * "{@code <clinit>}".
+ *
+ * <p> Generally, the method to be reflected is determined by the 4 step
+ * algorithm that follows.
+ * Let C be the class or interface represented by this {@code Class} object:
+ * <ol>
+ * <li> A union of methods is composed of:
+ * <ol type="a">
+ * <li> C's declared public instance and static methods as returned by
+ * {@link #getDeclaredMethods()} and filtered to include only public
+ * methods that match given {@code name} and {@code parameterTypes}</li>
+ * <li> If C is a class other than {@code Object}, then include the result
+ * of invoking this algorithm recursively on the superclass of C.</li>
+ * <li> Include the results of invoking this algorithm recursively on all
+ * direct superinterfaces of C, but include only instance methods.</li>
+ * </ol></li>
+ * <li> This union is partitioned into subsets of methods with same
+ * return type (the selection of methods from step 1 also guarantees that
+ * they have the same method name and parameter types).</li>
+ * <li> Within each such subset only the most specific methods are selected.
+ * Let method M be a method from a set of methods with same VM
+ * signature (return type, name, parameter types).
+ * M is most specific if there is no such method N != M from the same
+ * set, such that N is more specific than M. N is more specific than M
+ * if:
+ * <ol type="a">
+ * <li> N is declared by a class and M is declared by an interface; or</li>
+ * <li> N and M are both declared by classes or both by interfaces and
+ * N's declaring type is the same as or a subtype of M's declaring type
+ * (clearly, if M's and N's declaring types are the same type, then
+ * M and N are the same method).</li>
+ * </ol></li>
+ * <li> The result of this algorithm is chosen arbitrarily from the methods
+ * with most specific return type among all selected methods from step 3.
+ * Let R be a return type of a method M from the set of all selected methods
+ * from step 3. M is a method with most specific return type if there is
+ * no such method N != M from the same set, having return type S != R,
+ * such that S is a subtype of R as determined by
+ * R.class.{@link #isAssignableFrom}(S.class).
+ * </ol>
+ *
+ * @apiNote There may be more than one method with matching name and
+ * parameter types in a class because while the Java language forbids a
+ * class to declare multiple methods with the same signature but different
+ * return types, the Java virtual machine does not. This
+ * increased flexibility in the virtual machine can be used to
+ * implement various language features. For example, covariant
+ * returns can be implemented with {@linkplain
+ * java.lang.reflect.Method#isBridge bridge methods}; the bridge
+ * method and the overriding method would have the same
+ * signature but different return types. This method would return the
+ * overriding method as it would have a more specific return type.
+ *
+ * @param name the name of the method
+ * @param parameterTypes the list of parameters
+ * @return the {@code Method} object that matches the specified
+ * {@code name} and {@code parameterTypes}
+ * @throws NoSuchMethodException if a matching method is not found
+ * or if the name is "<init>"or "<clinit>".
+ * @throws NullPointerException if {@code name} is {@code null}
+ * @throws SecurityException
+ * If a security manager, <i>s</i>, is present and
+ * the caller's class loader is not the same as or an
+ * ancestor of the class loader for the current class and
+ * invocation of {@link SecurityManager#checkPackageAccess
+ * s.checkPackageAccess()} denies access to the package
+ * of this class.
+ *
+ * @jls 8.2 Class Members
+ * @jls 8.4 Method Declarations
+ * @since 1.1
+ */
+ @CallerSensitive
+ public Method getMethod(String name, Class<?>... parameterTypes)
+ throws NoSuchMethodException, SecurityException {
+ Objects.requireNonNull(name);
+ SecurityManager sm = System.getSecurityManager();
+ if (sm != null) {
+ checkMemberAccess(sm, Member.PUBLIC, Reflection.getCallerClass(), true);
+ }
+ Method method = getMethod0(name, parameterTypes);
+ if (method == null) {
+ throw new NoSuchMethodException(methodToString(name, parameterTypes));
+ }
+ return getReflectionFactory().copyMethod(method);
+ }
+
+ /**
+ * Returns a {@code Constructor} object that reflects the specified
+ * public constructor of the class represented by this {@code Class}
+ * object. The {@code parameterTypes} parameter is an array of
+ * {@code Class} objects that identify the constructor's formal
+ * parameter types, in declared order.
+ *
+ * If this {@code Class} object represents an inner class
+ * declared in a non-static context, the formal parameter types
+ * include the explicit enclosing instance as the first parameter.
+ *
+ * <p> The constructor to reflect is the public constructor of the class
+ * represented by this {@code Class} object whose formal parameter
+ * types match those specified by {@code parameterTypes}.
+ *
+ * @param parameterTypes the parameter array
+ * @return the {@code Constructor} object of the public constructor that
+ * matches the specified {@code parameterTypes}
+ * @throws NoSuchMethodException if a matching method is not found.
+ * @throws SecurityException
+ * If a security manager, <i>s</i>, is present and
+ * the caller's class loader is not the same as or an
+ * ancestor of the class loader for the current class and
+ * invocation of {@link SecurityManager#checkPackageAccess
+ * s.checkPackageAccess()} denies access to the package
+ * of this class.
+ *
+ * @since 1.1
+ */
+ @CallerSensitive
+ public Constructor<T> getConstructor(Class<?>... parameterTypes)
+ throws NoSuchMethodException, SecurityException
+ {
+ SecurityManager sm = System.getSecurityManager();
+ if (sm != null) {
+ checkMemberAccess(sm, Member.PUBLIC, Reflection.getCallerClass(), true);
+ }
+ return getReflectionFactory().copyConstructor(
+ getConstructor0(parameterTypes, Member.PUBLIC));
+ }
+
+
+ /**
+ * Returns an array of {@code Class} objects reflecting all the
+ * classes and interfaces declared as members of the class represented by
+ * this {@code Class} object. This includes public, protected, default
+ * (package) access, and private classes and interfaces declared by the
+ * class, but excludes inherited classes and interfaces. This method
+ * returns an array of length 0 if the class declares no classes or
+ * interfaces as members, or if this {@code Class} object represents a
+ * primitive type, an array class, or void.
+ *
+ * @return the array of {@code Class} objects representing all the
+ * declared members of this class
+ * @throws SecurityException
+ * If a security manager, <i>s</i>, is present and any of the
+ * following conditions is met:
+ *
+ * <ul>
+ *
+ * <li> the caller's class loader is not the same as the
+ * class loader of this class and invocation of
+ * {@link SecurityManager#checkPermission
+ * s.checkPermission} method with
+ * {@code RuntimePermission("accessDeclaredMembers")}
+ * denies access to the declared classes within this class
+ *
+ * <li> the caller's class loader is not the same as or an
+ * ancestor of the class loader for the current class and
+ * invocation of {@link SecurityManager#checkPackageAccess
+ * s.checkPackageAccess()} denies access to the package
+ * of this class
+ *
+ * </ul>
+ *
+ * @since 1.1
+ */
+ @CallerSensitive
+ public Class<?>[] getDeclaredClasses() throws SecurityException {
+ SecurityManager sm = System.getSecurityManager();
+ if (sm != null) {
+ checkMemberAccess(sm, Member.DECLARED, Reflection.getCallerClass(), false);
+ }
+ return getDeclaredClasses0();
+ }
+
+
+ /**
+ * Returns an array of {@code Field} objects reflecting all the fields
+ * declared by the class or interface represented by this
+ * {@code Class} object. This includes public, protected, default
+ * (package) access, and private fields, but excludes inherited fields.
+ *
+ * <p> If this {@code Class} object represents a class or interface with no
+ * declared fields, then this method returns an array of length 0.
+ *
+ * <p> If this {@code Class} object represents an array type, a primitive
+ * type, or void, then this method returns an array of length 0.
+ *
+ * <p> The elements in the returned array are not sorted and are not in any
+ * particular order.
+ *
+ * @return the array of {@code Field} objects representing all the
+ * declared fields of this class
+ * @throws SecurityException
+ * If a security manager, <i>s</i>, is present and any of the
+ * following conditions is met:
+ *
+ * <ul>
+ *
+ * <li> the caller's class loader is not the same as the
+ * class loader of this class and invocation of
+ * {@link SecurityManager#checkPermission
+ * s.checkPermission} method with
+ * {@code RuntimePermission("accessDeclaredMembers")}
+ * denies access to the declared fields within this class
+ *
+ * <li> the caller's class loader is not the same as or an
+ * ancestor of the class loader for the current class and
+ * invocation of {@link SecurityManager#checkPackageAccess
+ * s.checkPackageAccess()} denies access to the package
+ * of this class
+ *
+ * </ul>
+ *
+ * @since 1.1
+ * @jls 8.2 Class Members
+ * @jls 8.3 Field Declarations
+ */
+ @CallerSensitive
+ public Field[] getDeclaredFields() throws SecurityException {
+ SecurityManager sm = System.getSecurityManager();
+ if (sm != null) {
+ checkMemberAccess(sm, Member.DECLARED, Reflection.getCallerClass(), true);
+ }
+ return copyFields(privateGetDeclaredFields(false));
+ }
+
+
+ /**
+ * Returns an array containing {@code Method} objects reflecting all the
+ * declared methods of the class or interface represented by this {@code
+ * Class} object, including public, protected, default (package)
+ * access, and private methods, but excluding inherited methods.
+ *
+ * <p> If this {@code Class} object represents a type that has multiple
+ * declared methods with the same name and parameter types, but different
+ * return types, then the returned array has a {@code Method} object for
+ * each such method.
+ *
+ * <p> If this {@code Class} object represents a type that has a class
+ * initialization method {@code <clinit>}, then the returned array does
+ * <em>not</em> have a corresponding {@code Method} object.
+ *
+ * <p> If this {@code Class} object represents a class or interface with no
+ * declared methods, then the returned array has length 0.
+ *
+ * <p> If this {@code Class} object represents an array type, a primitive
+ * type, or void, then the returned array has length 0.
+ *
+ * <p> The elements in the returned array are not sorted and are not in any
+ * particular order.
+ *
+ * @return the array of {@code Method} objects representing all the
+ * declared methods of this class
+ * @throws SecurityException
+ * If a security manager, <i>s</i>, is present and any of the
+ * following conditions is met:
+ *
+ * <ul>
+ *
+ * <li> the caller's class loader is not the same as the
+ * class loader of this class and invocation of
+ * {@link SecurityManager#checkPermission
+ * s.checkPermission} method with
+ * {@code RuntimePermission("accessDeclaredMembers")}
+ * denies access to the declared methods within this class
+ *
+ * <li> the caller's class loader is not the same as or an
+ * ancestor of the class loader for the current class and
+ * invocation of {@link SecurityManager#checkPackageAccess
+ * s.checkPackageAccess()} denies access to the package
+ * of this class
+ *
+ * </ul>
+ *
+ * @jls 8.2 Class Members
+ * @jls 8.4 Method Declarations
+ * @since 1.1
+ */
+ @CallerSensitive
+ public Method[] getDeclaredMethods() throws SecurityException {
+ SecurityManager sm = System.getSecurityManager();
+ if (sm != null) {
+ checkMemberAccess(sm, Member.DECLARED, Reflection.getCallerClass(), true);
+ }
+ return copyMethods(privateGetDeclaredMethods(false));
+ }
+
+
+ /**
+ * Returns an array of {@code Constructor} objects reflecting all the
+ * constructors declared by the class represented by this
+ * {@code Class} object. These are public, protected, default
+ * (package) access, and private constructors. The elements in the array
+ * returned are not sorted and are not in any particular order. If the
+ * class has a default constructor, it is included in the returned array.
+ * This method returns an array of length 0 if this {@code Class}
+ * object represents an interface, a primitive type, an array class, or
+ * void.
+ *
+ * <p> See <em>The Java Language Specification</em>, section 8.2.
+ *
+ * @return the array of {@code Constructor} objects representing all the
+ * declared constructors of this class
+ * @throws SecurityException
+ * If a security manager, <i>s</i>, is present and any of the
+ * following conditions is met:
+ *
+ * <ul>
+ *
+ * <li> the caller's class loader is not the same as the
+ * class loader of this class and invocation of
+ * {@link SecurityManager#checkPermission
+ * s.checkPermission} method with
+ * {@code RuntimePermission("accessDeclaredMembers")}
+ * denies access to the declared constructors within this class
+ *
+ * <li> the caller's class loader is not the same as or an
+ * ancestor of the class loader for the current class and
+ * invocation of {@link SecurityManager#checkPackageAccess
+ * s.checkPackageAccess()} denies access to the package
+ * of this class
+ *
+ * </ul>
+ *
+ * @since 1.1
+ */
+ @CallerSensitive
+ public Constructor<?>[] getDeclaredConstructors() throws SecurityException {
+ SecurityManager sm = System.getSecurityManager();
+ if (sm != null) {
+ checkMemberAccess(sm, Member.DECLARED, Reflection.getCallerClass(), true);
+ }
+ return copyConstructors(privateGetDeclaredConstructors(false));
+ }
+
+
+ /**
+ * Returns a {@code Field} object that reflects the specified declared
+ * field of the class or interface represented by this {@code Class}
+ * object. The {@code name} parameter is a {@code String} that specifies
+ * the simple name of the desired field.
+ *
+ * <p> If this {@code Class} object represents an array type, then this
+ * method does not find the {@code length} field of the array type.
+ *
+ * @param name the name of the field
+ * @return the {@code Field} object for the specified field in this
+ * class
+ * @throws NoSuchFieldException if a field with the specified name is
+ * not found.
+ * @throws NullPointerException if {@code name} is {@code null}
+ * @throws SecurityException
+ * If a security manager, <i>s</i>, is present and any of the
+ * following conditions is met:
+ *
+ * <ul>
+ *
+ * <li> the caller's class loader is not the same as the
+ * class loader of this class and invocation of
+ * {@link SecurityManager#checkPermission
+ * s.checkPermission} method with
+ * {@code RuntimePermission("accessDeclaredMembers")}
+ * denies access to the declared field
+ *
+ * <li> the caller's class loader is not the same as or an
+ * ancestor of the class loader for the current class and
+ * invocation of {@link SecurityManager#checkPackageAccess
+ * s.checkPackageAccess()} denies access to the package
+ * of this class
+ *
+ * </ul>
+ *
+ * @since 1.1
+ * @jls 8.2 Class Members
+ * @jls 8.3 Field Declarations
+ */
+ @CallerSensitive
+ public Field getDeclaredField(String name)
+ throws NoSuchFieldException, SecurityException {
+ Objects.requireNonNull(name);
+ SecurityManager sm = System.getSecurityManager();
+ if (sm != null) {
+ checkMemberAccess(sm, Member.DECLARED, Reflection.getCallerClass(), true);
+ }
+ Field field = searchFields(privateGetDeclaredFields(false), name);
+ if (field == null) {
+ throw new NoSuchFieldException(name);
+ }
+ return getReflectionFactory().copyField(field);
+ }
+
+
+ /**
+ * Returns a {@code Method} object that reflects the specified
+ * declared method of the class or interface represented by this
+ * {@code Class} object. The {@code name} parameter is a
+ * {@code String} that specifies the simple name of the desired
+ * method, and the {@code parameterTypes} parameter is an array of
+ * {@code Class} objects that identify the method's formal parameter
+ * types, in declared order. If more than one method with the same
+ * parameter types is declared in a class, and one of these methods has a
+ * return type that is more specific than any of the others, that method is
+ * returned; otherwise one of the methods is chosen arbitrarily. If the
+ * name is "<init>"or "<clinit>" a {@code NoSuchMethodException}
+ * is raised.
+ *
+ * <p> If this {@code Class} object represents an array type, then this
+ * method does not find the {@code clone()} method.
+ *
+ * @param name the name of the method
+ * @param parameterTypes the parameter array
+ * @return the {@code Method} object for the method of this class
+ * matching the specified name and parameters
+ * @throws NoSuchMethodException if a matching method is not found.
+ * @throws NullPointerException if {@code name} is {@code null}
+ * @throws SecurityException
+ * If a security manager, <i>s</i>, is present and any of the
+ * following conditions is met:
+ *
+ * <ul>
+ *
+ * <li> the caller's class loader is not the same as the
+ * class loader of this class and invocation of
+ * {@link SecurityManager#checkPermission
+ * s.checkPermission} method with
+ * {@code RuntimePermission("accessDeclaredMembers")}
+ * denies access to the declared method
+ *
+ * <li> the caller's class loader is not the same as or an
+ * ancestor of the class loader for the current class and
+ * invocation of {@link SecurityManager#checkPackageAccess
+ * s.checkPackageAccess()} denies access to the package
+ * of this class
+ *
+ * </ul>
+ *
+ * @jls 8.2 Class Members
+ * @jls 8.4 Method Declarations
+ * @since 1.1
+ */
+ @CallerSensitive
+ public Method getDeclaredMethod(String name, Class<?>... parameterTypes)
+ throws NoSuchMethodException, SecurityException {
+ Objects.requireNonNull(name);
+ SecurityManager sm = System.getSecurityManager();
+ if (sm != null) {
+ checkMemberAccess(sm, Member.DECLARED, Reflection.getCallerClass(), true);
+ }
+ Method method = searchMethods(privateGetDeclaredMethods(false), name, parameterTypes);
+ if (method == null) {
+ throw new NoSuchMethodException(methodToString(name, parameterTypes));
+ }
+ return getReflectionFactory().copyMethod(method);
+ }
+
+ /**
+ * Returns the list of {@code Method} objects for the declared public
+ * methods of this class or interface that have the specified method name
+ * and parameter types.
+ *
+ * @param name the name of the method
+ * @param parameterTypes the parameter array
+ * @return the list of {@code Method} objects for the public methods of
+ * this class matching the specified name and parameters
+ */
+ List<Method> getDeclaredPublicMethods(String name, Class<?>... parameterTypes) {
+ Method[] methods = privateGetDeclaredMethods(/* publicOnly */ true);
+ ReflectionFactory factory = getReflectionFactory();
+ List<Method> result = new ArrayList<>();
+ for (Method method : methods) {
+ if (method.getName().equals(name)
+ && Arrays.equals(
+ factory.getExecutableSharedParameterTypes(method),
+ parameterTypes)) {
+ result.add(factory.copyMethod(method));
+ }
+ }
+ return result;
+ }
+
+ /**
+ * Returns a {@code Constructor} object that reflects the specified
+ * constructor of the class or interface represented by this
+ * {@code Class} object. The {@code parameterTypes} parameter is
+ * an array of {@code Class} objects that identify the constructor's
+ * formal parameter types, in declared order.
+ *
+ * If this {@code Class} object represents an inner class
+ * declared in a non-static context, the formal parameter types
+ * include the explicit enclosing instance as the first parameter.
+ *
+ * @param parameterTypes the parameter array
+ * @return The {@code Constructor} object for the constructor with the
+ * specified parameter list
+ * @throws NoSuchMethodException if a matching method is not found.
+ * @throws SecurityException
+ * If a security manager, <i>s</i>, is present and any of the
+ * following conditions is met:
+ *
+ * <ul>
+ *
+ * <li> the caller's class loader is not the same as the
+ * class loader of this class and invocation of
+ * {@link SecurityManager#checkPermission
+ * s.checkPermission} method with
+ * {@code RuntimePermission("accessDeclaredMembers")}
+ * denies access to the declared constructor
+ *
+ * <li> the caller's class loader is not the same as or an
+ * ancestor of the class loader for the current class and
+ * invocation of {@link SecurityManager#checkPackageAccess
+ * s.checkPackageAccess()} denies access to the package
+ * of this class
+ *
+ * </ul>
+ *
+ * @since 1.1
+ */
+ @CallerSensitive
+ public Constructor<T> getDeclaredConstructor(Class<?>... parameterTypes)
+ throws NoSuchMethodException, SecurityException
+ {
+ SecurityManager sm = System.getSecurityManager();
+ if (sm != null) {
+ checkMemberAccess(sm, Member.DECLARED, Reflection.getCallerClass(), true);
+ }
+
+ return getReflectionFactory().copyConstructor(
+ getConstructor0(parameterTypes, Member.DECLARED));
+ }
+
+ /**
+ * Finds a resource with a given name.
+ *
+ * <p> If this class is in a named {@link Module Module} then this method
+ * will attempt to find the resource in the module. This is done by
+ * delegating to the module's class loader {@link
+ * ClassLoader#findResource(String,String) findResource(String,String)}
+ * method, invoking it with the module name and the absolute name of the
+ * resource. Resources in named modules are subject to the rules for
+ * encapsulation specified in the {@code Module} {@link
+ * Module#getResourceAsStream getResourceAsStream} method and so this
+ * method returns {@code null} when the resource is a
+ * non-"{@code .class}" resource in a package that is not open to the
+ * caller's module.
+ *
+ * <p> Otherwise, if this class is not in a named module then the rules for
+ * searching resources associated with a given class are implemented by the
+ * defining {@linkplain ClassLoader class loader} of the class. This method
+ * delegates to this object's class loader. If this object was loaded by
+ * the bootstrap class loader, the method delegates to {@link
+ * ClassLoader#getSystemResourceAsStream}.
+ *
+ * <p> Before delegation, an absolute resource name is constructed from the
+ * given resource name using this algorithm:
+ *
+ * <ul>
+ *
+ * <li> If the {@code name} begins with a {@code '/'}
+ * (<code>'\u002f'</code>), then the absolute name of the resource is the
+ * portion of the {@code name} following the {@code '/'}.
+ *
+ * <li> Otherwise, the absolute name is of the following form:
+ *
+ * <blockquote>
+ * {@code modified_package_name/name}
+ * </blockquote>
+ *
+ * <p> Where the {@code modified_package_name} is the package name of this
+ * object with {@code '/'} substituted for {@code '.'}
+ * (<code>'\u002e'</code>).
+ *
+ * </ul>
+ *
+ * @param name name of the desired resource
+ * @return A {@link java.io.InputStream} object; {@code null} if no
+ * resource with this name is found, the resource is in a package
+ * that is not {@link Module#isOpen(String, Module) open} to at
+ * least the caller module, or access to the resource is denied
+ * by the security manager.
+ * @throws NullPointerException If {@code name} is {@code null}
+ *
+ * @see Module#getResourceAsStream(String)
+ * @since 1.1
+ * @revised 9
+ * @spec JPMS
+ */
+ @CallerSensitive
+ public InputStream getResourceAsStream(String name) {
+ name = resolveName(name);
+
+ Module thisModule = getModule();
+ if (thisModule.isNamed()) {
+ // check if resource can be located by caller
+ if (Resources.canEncapsulate(name)
+ && !isOpenToCaller(name, Reflection.getCallerClass())) {
+ return null;
+ }
+
+ // resource not encapsulated or in package open to caller
+ String mn = thisModule.getName();
+ ClassLoader cl = getClassLoader0();
+ try {
+
+ // special-case built-in class loaders to avoid the
+ // need for a URL connection
+ if (cl == null) {
+ return BootLoader.findResourceAsStream(mn, name);
+ } else if (cl instanceof BuiltinClassLoader) {
+ return ((BuiltinClassLoader) cl).findResourceAsStream(mn, name);
+ } else {
+ URL url = cl.findResource(mn, name);
+ return (url != null) ? url.openStream() : null;
+ }
+
+ } catch (IOException | SecurityException e) {
+ return null;
+ }
+ }
+
+ // unnamed module
+ ClassLoader cl = getClassLoader0();
+ if (cl == null) {
+ return ClassLoader.getSystemResourceAsStream(name);
+ } else {
+ return cl.getResourceAsStream(name);
+ }
+ }
+
+ /**
+ * Finds a resource with a given name.
+ *
+ * <p> If this class is in a named {@link Module Module} then this method
+ * will attempt to find the resource in the module. This is done by
+ * delegating to the module's class loader {@link
+ * ClassLoader#findResource(String,String) findResource(String,String)}
+ * method, invoking it with the module name and the absolute name of the
+ * resource. Resources in named modules are subject to the rules for
+ * encapsulation specified in the {@code Module} {@link
+ * Module#getResourceAsStream getResourceAsStream} method and so this
+ * method returns {@code null} when the resource is a
+ * non-"{@code .class}" resource in a package that is not open to the
+ * caller's module.
+ *
+ * <p> Otherwise, if this class is not in a named module then the rules for
+ * searching resources associated with a given class are implemented by the
+ * defining {@linkplain ClassLoader class loader} of the class. This method
+ * delegates to this object's class loader. If this object was loaded by
+ * the bootstrap class loader, the method delegates to {@link
+ * ClassLoader#getSystemResource}.
+ *
+ * <p> Before delegation, an absolute resource name is constructed from the
+ * given resource name using this algorithm:
+ *
+ * <ul>
+ *
+ * <li> If the {@code name} begins with a {@code '/'}
+ * (<code>'\u002f'</code>), then the absolute name of the resource is the
+ * portion of the {@code name} following the {@code '/'}.
+ *
+ * <li> Otherwise, the absolute name is of the following form:
+ *
+ * <blockquote>
+ * {@code modified_package_name/name}
+ * </blockquote>
+ *
+ * <p> Where the {@code modified_package_name} is the package name of this
+ * object with {@code '/'} substituted for {@code '.'}
+ * (<code>'\u002e'</code>).
+ *
+ * </ul>
+ *
+ * @param name name of the desired resource
+ * @return A {@link java.net.URL} object; {@code null} if no resource with
+ * this name is found, the resource cannot be located by a URL, the
+ * resource is in a package that is not
+ * {@link Module#isOpen(String, Module) open} to at least the caller
+ * module, or access to the resource is denied by the security
+ * manager.
+ * @throws NullPointerException If {@code name} is {@code null}
+ * @since 1.1
+ * @revised 9
+ * @spec JPMS
+ */
+ @CallerSensitive
+ public URL getResource(String name) {
+ name = resolveName(name);
+
+ Module thisModule = getModule();
+ if (thisModule.isNamed()) {
+ // check if resource can be located by caller
+ if (Resources.canEncapsulate(name)
+ && !isOpenToCaller(name, Reflection.getCallerClass())) {
+ return null;
+ }
+
+ // resource not encapsulated or in package open to caller
+ String mn = thisModule.getName();
+ ClassLoader cl = getClassLoader0();
+ try {
+ if (cl == null) {
+ return BootLoader.findResource(mn, name);
+ } else {
+ return cl.findResource(mn, name);
+ }
+ } catch (IOException ioe) {
+ return null;
+ }
+ }
+
+ // unnamed module
+ ClassLoader cl = getClassLoader0();
+ if (cl == null) {
+ return ClassLoader.getSystemResource(name);
+ } else {
+ return cl.getResource(name);
+ }
+ }
+
+ /**
+ * Returns true if a resource with the given name can be located by the
+ * given caller. All resources in a module can be located by code in
+ * the module. For other callers, then the package needs to be open to
+ * the caller.
+ */
+ private boolean isOpenToCaller(String name, Class<?> caller) {
+ // assert getModule().isNamed();
+ Module thisModule = getModule();
+ Module callerModule = (caller != null) ? caller.getModule() : null;
+ if (callerModule != thisModule) {
+ String pn = Resources.toPackageName(name);
+ if (thisModule.getDescriptor().packages().contains(pn)) {
+ if (callerModule == null && !thisModule.isOpen(pn)) {
+ // no caller, package not open
+ return false;
+ }
+ if (!thisModule.isOpen(pn, callerModule)) {
+ // package not open to caller
+ return false;
+ }
+ }
+ }
+ return true;
+ }
+
+
+ /** protection domain returned when the internal domain is null */
+ private static java.security.ProtectionDomain allPermDomain;
+
+ /**
+ * Returns the {@code ProtectionDomain} of this class. If there is a
+ * security manager installed, this method first calls the security
+ * manager's {@code checkPermission} method with a
+ * {@code RuntimePermission("getProtectionDomain")} permission to
+ * ensure it's ok to get the
+ * {@code ProtectionDomain}.
+ *
+ * @return the ProtectionDomain of this class
+ *
+ * @throws SecurityException
+ * if a security manager exists and its
+ * {@code checkPermission} method doesn't allow
+ * getting the ProtectionDomain.
+ *
+ * @see java.security.ProtectionDomain
+ * @see SecurityManager#checkPermission
+ * @see java.lang.RuntimePermission
+ * @since 1.2
+ */
+ public java.security.ProtectionDomain getProtectionDomain() {
+ SecurityManager sm = System.getSecurityManager();
+ if (sm != null) {
+ sm.checkPermission(SecurityConstants.GET_PD_PERMISSION);
+ }
+ java.security.ProtectionDomain pd = getProtectionDomain0();
+ if (pd == null) {
+ if (allPermDomain == null) {
+ java.security.Permissions perms =
+ new java.security.Permissions();
+ perms.add(SecurityConstants.ALL_PERMISSION);
+ allPermDomain =
+ new java.security.ProtectionDomain(null, perms);
+ }
+ pd = allPermDomain;
+ }
+ return pd;
+ }
+
+
+ /**
+ * Returns the ProtectionDomain of this class.
+ */
+ private native java.security.ProtectionDomain getProtectionDomain0();
+
+ /*
+ * Return the Virtual Machine's Class object for the named
+ * primitive type.
+ */
+ static native Class<?> getPrimitiveClass(String name);
+
+ /*
+ * Check if client is allowed to access members. If access is denied,
+ * throw a SecurityException.
+ *
+ * This method also enforces package access.
+ *
+ * <p> Default policy: allow all clients access with normal Java access
+ * control.
+ *
+ * <p> NOTE: should only be called if a SecurityManager is installed
+ */
+ private void checkMemberAccess(SecurityManager sm, int which,
+ Class<?> caller, boolean checkProxyInterfaces) {
+ /* Default policy allows access to all {@link Member#PUBLIC} members,
+ * as well as access to classes that have the same class loader as the caller.
+ * In all other cases, it requires RuntimePermission("accessDeclaredMembers")
+ * permission.
+ */
+ final ClassLoader ccl = ClassLoader.getClassLoader(caller);
+ if (which != Member.PUBLIC) {
+ final ClassLoader cl = getClassLoader0();
+ if (ccl != cl) {
+ sm.checkPermission(SecurityConstants.CHECK_MEMBER_ACCESS_PERMISSION);
+ }
+ }
+ this.checkPackageAccess(sm, ccl, checkProxyInterfaces);
+ }
+
+ /*
+ * Checks if a client loaded in ClassLoader ccl is allowed to access this
+ * class under the current package access policy. If access is denied,
+ * throw a SecurityException.
+ *
+ * NOTE: this method should only be called if a SecurityManager is active
+ */
+ private void checkPackageAccess(SecurityManager sm, final ClassLoader ccl,
+ boolean checkProxyInterfaces) {
+ final ClassLoader cl = getClassLoader0();
+
+ if (ReflectUtil.needsPackageAccessCheck(ccl, cl)) {
+ String pkg = this.getPackageName();
+ if (pkg != null && !pkg.isEmpty()) {
+ // skip the package access check on a proxy class in default proxy package
+ if (!Proxy.isProxyClass(this) || ReflectUtil.isNonPublicProxyClass(this)) {
+ sm.checkPackageAccess(pkg);
+ }
+ }
+ }
+ // check package access on the proxy interfaces
+ if (checkProxyInterfaces && Proxy.isProxyClass(this)) {
+ ReflectUtil.checkProxyPackageAccess(ccl, this.getInterfaces());
+ }
+ }
+
+ /**
+ * Add a package name prefix if the name is not absolute Remove leading "/"
+ * if name is absolute
+ */
+ private String resolveName(String name) {
+ if (!name.startsWith("/")) {
+ Class<?> c = this;
+ while (c.isArray()) {
+ c = c.getComponentType();
+ }
+ String baseName = c.getPackageName();
+ if (baseName != null && !baseName.isEmpty()) {
+ name = baseName.replace('.', '/') + "/" + name;
+ }
+ } else {
+ name = name.substring(1);
+ }
+ return name;
+ }
+
+ /**
+ * Atomic operations support.
+ */
+ private static class Atomic {
+ // initialize Unsafe machinery here, since we need to call Class.class instance method
+ // and have to avoid calling it in the static initializer of the Class class...
+ private static final Unsafe unsafe = Unsafe.getUnsafe();
+ // offset of Class.reflectionData instance field
+ private static final long reflectionDataOffset
+ = unsafe.objectFieldOffset(Class.class, "reflectionData");
+ // offset of Class.annotationType instance field
+ private static final long annotationTypeOffset
+ = unsafe.objectFieldOffset(Class.class, "annotationType");
+ // offset of Class.annotationData instance field
+ private static final long annotationDataOffset
+ = unsafe.objectFieldOffset(Class.class, "annotationData");
+
+ static <T> boolean casReflectionData(Class<?> clazz,
+ SoftReference<ReflectionData<T>> oldData,
+ SoftReference<ReflectionData<T>> newData) {
+ return unsafe.compareAndSetObject(clazz, reflectionDataOffset, oldData, newData);
+ }
+
+ static <T> boolean casAnnotationType(Class<?> clazz,
+ AnnotationType oldType,
+ AnnotationType newType) {
+ return unsafe.compareAndSetObject(clazz, annotationTypeOffset, oldType, newType);
+ }
+
+ static <T> boolean casAnnotationData(Class<?> clazz,
+ AnnotationData oldData,
+ AnnotationData newData) {
+ return unsafe.compareAndSetObject(clazz, annotationDataOffset, oldData, newData);
+ }
+ }
+
+ /**
+ * Reflection support.
+ */
+
+ // reflection data that might get invalidated when JVM TI RedefineClasses() is called
+ private static class ReflectionData<T> {
+ volatile Field[] declaredFields;
+ volatile Field[] publicFields;
+ volatile Method[] declaredMethods;
+ volatile Method[] publicMethods;
+ volatile Constructor<T>[] declaredConstructors;
+ volatile Constructor<T>[] publicConstructors;
+ // Intermediate results for getFields and getMethods
+ volatile Field[] declaredPublicFields;
+ volatile Method[] declaredPublicMethods;
+ volatile Class<?>[] interfaces;
+
+ // Value of classRedefinedCount when we created this ReflectionData instance
+ final int redefinedCount;
+
+ ReflectionData(int redefinedCount) {
+ this.redefinedCount = redefinedCount;
+ }
+ }
+
+ private transient volatile SoftReference<ReflectionData<T>> reflectionData;
+
+ // Incremented by the VM on each call to JVM TI RedefineClasses()
+ // that redefines this class or a superclass.
+ private transient volatile int classRedefinedCount;
+
+ // Lazily create and cache ReflectionData
+ private ReflectionData<T> reflectionData() {
+ SoftReference<ReflectionData<T>> reflectionData = this.reflectionData;
+ int classRedefinedCount = this.classRedefinedCount;
+ ReflectionData<T> rd;
+ if (reflectionData != null &&
+ (rd = reflectionData.get()) != null &&
+ rd.redefinedCount == classRedefinedCount) {
+ return rd;
+ }
+ // else no SoftReference or cleared SoftReference or stale ReflectionData
+ // -> create and replace new instance
+ return newReflectionData(reflectionData, classRedefinedCount);
+ }
+
+ private ReflectionData<T> newReflectionData(SoftReference<ReflectionData<T>> oldReflectionData,
+ int classRedefinedCount) {
+ while (true) {
+ ReflectionData<T> rd = new ReflectionData<>(classRedefinedCount);
+ // try to CAS it...
+ if (Atomic.casReflectionData(this, oldReflectionData, new SoftReference<>(rd))) {
+ return rd;
+ }
+ // else retry
+ oldReflectionData = this.reflectionData;
+ classRedefinedCount = this.classRedefinedCount;
+ if (oldReflectionData != null &&
+ (rd = oldReflectionData.get()) != null &&
+ rd.redefinedCount == classRedefinedCount) {
+ return rd;
+ }
+ }
+ }
+
+ // Generic signature handling
+ private native String getGenericSignature0();
+
+ // Generic info repository; lazily initialized
+ private transient volatile ClassRepository genericInfo;
+
+ // accessor for factory
+ private GenericsFactory getFactory() {
+ // create scope and factory
+ return CoreReflectionFactory.make(this, ClassScope.make(this));
+ }
+
+ // accessor for generic info repository;
+ // generic info is lazily initialized
+ private ClassRepository getGenericInfo() {
+ ClassRepository genericInfo = this.genericInfo;
+ if (genericInfo == null) {
+ String signature = getGenericSignature0();
+ if (signature == null) {
+ genericInfo = ClassRepository.NONE;
+ } else {
+ genericInfo = ClassRepository.make(signature, getFactory());
+ }
+ this.genericInfo = genericInfo;
+ }
+ return (genericInfo != ClassRepository.NONE) ? genericInfo : null;
+ }
+
+ // Annotations handling
+ native byte[] getRawAnnotations();
+ // Since 1.8
+ native byte[] getRawTypeAnnotations();
+ static byte[] getExecutableTypeAnnotationBytes(Executable ex) {
+ return getReflectionFactory().getExecutableTypeAnnotationBytes(ex);
+ }
+
+ native ConstantPool getConstantPool();
+
+ //
+ //
+ // java.lang.reflect.Field handling
+ //
+ //
+
+ // Returns an array of "root" fields. These Field objects must NOT
+ // be propagated to the outside world, but must instead be copied
+ // via ReflectionFactory.copyField.
+ private Field[] privateGetDeclaredFields(boolean publicOnly) {
+ Field[] res;
+ ReflectionData<T> rd = reflectionData();
+ if (rd != null) {
+ res = publicOnly ? rd.declaredPublicFields : rd.declaredFields;
+ if (res != null) return res;
+ }
+ // No cached value available; request value from VM
+ res = Reflection.filterFields(this, getDeclaredFields0(publicOnly));
+ if (rd != null) {
+ if (publicOnly) {
+ rd.declaredPublicFields = res;
+ } else {
+ rd.declaredFields = res;
+ }
+ }
+ return res;
+ }
+
+ // Returns an array of "root" fields. These Field objects must NOT
+ // be propagated to the outside world, but must instead be copied
+ // via ReflectionFactory.copyField.
+ private Field[] privateGetPublicFields(Set<Class<?>> traversedInterfaces) {
+ Field[] res;
+ ReflectionData<T> rd = reflectionData();
+ if (rd != null) {
+ res = rd.publicFields;
+ if (res != null) return res;
+ }
+
+ // No cached value available; compute value recursively.
+ // Traverse in correct order for getField().
+ List<Field> fields = new ArrayList<>();
+ if (traversedInterfaces == null) {
+ traversedInterfaces = new HashSet<>();
+ }
+
+ // Local fields
+ Field[] tmp = privateGetDeclaredFields(true);
+ addAll(fields, tmp);
+
+ // Direct superinterfaces, recursively
+ for (Class<?> c : getInterfaces()) {
+ if (!traversedInterfaces.contains(c)) {
+ traversedInterfaces.add(c);
+ addAll(fields, c.privateGetPublicFields(traversedInterfaces));
+ }
+ }
+
+ // Direct superclass, recursively
+ if (!isInterface()) {
+ Class<?> c = getSuperclass();
+ if (c != null) {
+ addAll(fields, c.privateGetPublicFields(traversedInterfaces));
+ }
+ }
+
+ res = new Field[fields.size()];
+ fields.toArray(res);
+ if (rd != null) {
+ rd.publicFields = res;
+ }
+ return res;
+ }
+
+ private static void addAll(Collection<Field> c, Field[] o) {
+ for (Field f : o) {
+ c.add(f);
+ }
+ }
+
+
+ //
+ //
+ // java.lang.reflect.Constructor handling
+ //
+ //
+
+ // Returns an array of "root" constructors. These Constructor
+ // objects must NOT be propagated to the outside world, but must
+ // instead be copied via ReflectionFactory.copyConstructor.
+ private Constructor<T>[] privateGetDeclaredConstructors(boolean publicOnly) {
+ Constructor<T>[] res;
+ ReflectionData<T> rd = reflectionData();
+ if (rd != null) {
+ res = publicOnly ? rd.publicConstructors : rd.declaredConstructors;
+ if (res != null) return res;
+ }
+ // No cached value available; request value from VM
+ if (isInterface()) {
+ @SuppressWarnings("unchecked")
+ Constructor<T>[] temporaryRes = (Constructor<T>[]) new Constructor<?>[0];
+ res = temporaryRes;
+ } else {
+ res = getDeclaredConstructors0(publicOnly);
+ }
+ if (rd != null) {
+ if (publicOnly) {
+ rd.publicConstructors = res;
+ } else {
+ rd.declaredConstructors = res;
+ }
+ }
+ return res;
+ }
+
+ //
+ //
+ // java.lang.reflect.Method handling
+ //
+ //
+
+ // Returns an array of "root" methods. These Method objects must NOT
+ // be propagated to the outside world, but must instead be copied
+ // via ReflectionFactory.copyMethod.
+ private Method[] privateGetDeclaredMethods(boolean publicOnly) {
+ Method[] res;
+ ReflectionData<T> rd = reflectionData();
+ if (rd != null) {
+ res = publicOnly ? rd.declaredPublicMethods : rd.declaredMethods;
+ if (res != null) return res;
+ }
+ // No cached value available; request value from VM
+ res = Reflection.filterMethods(this, getDeclaredMethods0(publicOnly));
+ if (rd != null) {
+ if (publicOnly) {
+ rd.declaredPublicMethods = res;
+ } else {
+ rd.declaredMethods = res;
+ }
+ }
+ return res;
+ }
+
+ // Returns an array of "root" methods. These Method objects must NOT
+ // be propagated to the outside world, but must instead be copied
+ // via ReflectionFactory.copyMethod.
+ private Method[] privateGetPublicMethods() {
+ Method[] res;
+ ReflectionData<T> rd = reflectionData();
+ if (rd != null) {
+ res = rd.publicMethods;
+ if (res != null) return res;
+ }
+
+ // No cached value available; compute value recursively.
+ // Start by fetching public declared methods...
+ PublicMethods pms = new PublicMethods();
+ for (Method m : privateGetDeclaredMethods(/* publicOnly */ true)) {
+ pms.merge(m);
+ }
+ // ...then recur over superclass methods...
+ Class<?> sc = getSuperclass();
+ if (sc != null) {
+ for (Method m : sc.privateGetPublicMethods()) {
+ pms.merge(m);
+ }
+ }
+ // ...and finally over direct superinterfaces.
+ for (Class<?> intf : getInterfaces(/* cloneArray */ false)) {
+ for (Method m : intf.privateGetPublicMethods()) {
+ // static interface methods are not inherited
+ if (!Modifier.isStatic(m.getModifiers())) {
+ pms.merge(m);
+ }
+ }
+ }
+
+ res = pms.toArray();
+ if (rd != null) {
+ rd.publicMethods = res;
+ }
+ return res;
+ }
+
+
+ //
+ // Helpers for fetchers of one field, method, or constructor
+ //
+
+ // This method does not copy the returned Field object!
+ private static Field searchFields(Field[] fields, String name) {
+ for (Field field : fields) {
+ if (field.getName().equals(name)) {
+ return field;
+ }
+ }
+ return null;
+ }
+
+ // Returns a "root" Field object. This Field object must NOT
+ // be propagated to the outside world, but must instead be copied
+ // via ReflectionFactory.copyField.
+ private Field getField0(String name) {
+ // Note: the intent is that the search algorithm this routine
+ // uses be equivalent to the ordering imposed by
+ // privateGetPublicFields(). It fetches only the declared
+ // public fields for each class, however, to reduce the number
+ // of Field objects which have to be created for the common
+ // case where the field being requested is declared in the
+ // class which is being queried.
+ Field res;
+ // Search declared public fields
+ if ((res = searchFields(privateGetDeclaredFields(true), name)) != null) {
+ return res;
+ }
+ // Direct superinterfaces, recursively
+ Class<?>[] interfaces = getInterfaces(/* cloneArray */ false);
+ for (Class<?> c : interfaces) {
+ if ((res = c.getField0(name)) != null) {
+ return res;
+ }
+ }
+ // Direct superclass, recursively
+ if (!isInterface()) {
+ Class<?> c = getSuperclass();
+ if (c != null) {
+ if ((res = c.getField0(name)) != null) {
+ return res;
+ }
+ }
+ }
+ return null;
+ }
+
+ // This method does not copy the returned Method object!
+ private static Method searchMethods(Method[] methods,
+ String name,
+ Class<?>[] parameterTypes)
+ {
+ ReflectionFactory fact = getReflectionFactory();
+ Method res = null;
+ for (Method m : methods) {
+ if (m.getName().equals(name)
+ && arrayContentsEq(parameterTypes,
+ fact.getExecutableSharedParameterTypes(m))
+ && (res == null
+ || (res.getReturnType() != m.getReturnType()
+ && res.getReturnType().isAssignableFrom(m.getReturnType()))))
+ res = m;
+ }
+ return res;
+ }
+
+ private static final Class<?>[] EMPTY_CLASS_ARRAY = new Class<?>[0];
+
+ // Returns a "root" Method object. This Method object must NOT
+ // be propagated to the outside world, but must instead be copied
+ // via ReflectionFactory.copyMethod.
+ private Method getMethod0(String name, Class<?>[] parameterTypes) {
+ PublicMethods.MethodList res = getMethodsRecursive(
+ name,
+ parameterTypes == null ? EMPTY_CLASS_ARRAY : parameterTypes,
+ /* includeStatic */ true);
+ return res == null ? null : res.getMostSpecific();
+ }
+
+ // Returns a list of "root" Method objects. These Method objects must NOT
+ // be propagated to the outside world, but must instead be copied
+ // via ReflectionFactory.copyMethod.
+ private PublicMethods.MethodList getMethodsRecursive(String name,
+ Class<?>[] parameterTypes,
+ boolean includeStatic) {
+ // 1st check declared public methods
+ Method[] methods = privateGetDeclaredMethods(/* publicOnly */ true);
+ PublicMethods.MethodList res = PublicMethods.MethodList
+ .filter(methods, name, parameterTypes, includeStatic);
+ // if there is at least one match among declared methods, we need not
+ // search any further as such match surely overrides matching methods
+ // declared in superclass(es) or interface(s).
+ if (res != null) {
+ return res;
+ }
+
+ // if there was no match among declared methods,
+ // we must consult the superclass (if any) recursively...
+ Class<?> sc = getSuperclass();
+ if (sc != null) {
+ res = sc.getMethodsRecursive(name, parameterTypes, includeStatic);
+ }
+
+ // ...and coalesce the superclass methods with methods obtained
+ // from directly implemented interfaces excluding static methods...
+ for (Class<?> intf : getInterfaces(/* cloneArray */ false)) {
+ res = PublicMethods.MethodList.merge(
+ res, intf.getMethodsRecursive(name, parameterTypes,
+ /* includeStatic */ false));
+ }
+
+ return res;
+ }
+
+ // Returns a "root" Constructor object. This Constructor object must NOT
+ // be propagated to the outside world, but must instead be copied
+ // via ReflectionFactory.copyConstructor.
+ private Constructor<T> getConstructor0(Class<?>[] parameterTypes,
+ int which) throws NoSuchMethodException
+ {
+ ReflectionFactory fact = getReflectionFactory();
+ Constructor<T>[] constructors = privateGetDeclaredConstructors((which == Member.PUBLIC));
+ for (Constructor<T> constructor : constructors) {
+ if (arrayContentsEq(parameterTypes,
+ fact.getExecutableSharedParameterTypes(constructor))) {
+ return constructor;
+ }
+ }
+ throw new NoSuchMethodException(methodToString("<init>", parameterTypes));
+ }
+
+ //
+ // Other helpers and base implementation
+ //
+
+ private static boolean arrayContentsEq(Object[] a1, Object[] a2) {
+ if (a1 == null) {
+ return a2 == null || a2.length == 0;
+ }
+
+ if (a2 == null) {
+ return a1.length == 0;
+ }
+
+ if (a1.length != a2.length) {
+ return false;
+ }
+
+ for (int i = 0; i < a1.length; i++) {
+ if (a1[i] != a2[i]) {
+ return false;
+ }
+ }
+
+ return true;
+ }
+
+ private static Field[] copyFields(Field[] arg) {
+ Field[] out = new Field[arg.length];
+ ReflectionFactory fact = getReflectionFactory();
+ for (int i = 0; i < arg.length; i++) {
+ out[i] = fact.copyField(arg[i]);
+ }
+ return out;
+ }
+
+ private static Method[] copyMethods(Method[] arg) {
+ Method[] out = new Method[arg.length];
+ ReflectionFactory fact = getReflectionFactory();
+ for (int i = 0; i < arg.length; i++) {
+ out[i] = fact.copyMethod(arg[i]);
+ }
+ return out;
+ }
+
+ private static <U> Constructor<U>[] copyConstructors(Constructor<U>[] arg) {
+ Constructor<U>[] out = arg.clone();
+ ReflectionFactory fact = getReflectionFactory();
+ for (int i = 0; i < out.length; i++) {
+ out[i] = fact.copyConstructor(out[i]);
+ }
+ return out;
+ }
+
+ private native Field[] getDeclaredFields0(boolean publicOnly);
+ private native Method[] getDeclaredMethods0(boolean publicOnly);
+ private native Constructor<T>[] getDeclaredConstructors0(boolean publicOnly);
+ private native Class<?>[] getDeclaredClasses0();
+
+ /**
+ * Helper method to get the method name from arguments.
+ */
+ private String methodToString(String name, Class<?>[] argTypes) {
+ StringJoiner sj = new StringJoiner(", ", getName() + "." + name + "(", ")");
+ if (argTypes != null) {
+ for (int i = 0; i < argTypes.length; i++) {
+ Class<?> c = argTypes[i];
+ sj.add((c == null) ? "null" : c.getName());
+ }
+ }
+ return sj.toString();
+ }
+
+ /** use serialVersionUID from JDK 1.1 for interoperability */
+ private static final long serialVersionUID = 3206093459760846163L;
+
+
+ /**
+ * Class Class is special cased within the Serialization Stream Protocol.
+ *
+ * A Class instance is written initially into an ObjectOutputStream in the
+ * following format:
+ * <pre>
+ * {@code TC_CLASS} ClassDescriptor
+ * A ClassDescriptor is a special cased serialization of
+ * a {@code java.io.ObjectStreamClass} instance.
+ * </pre>
+ * A new handle is generated for the initial time the class descriptor
+ * is written into the stream. Future references to the class descriptor
+ * are written as references to the initial class descriptor instance.
+ *
+ * @see java.io.ObjectStreamClass
+ */
+ private static final ObjectStreamField[] serialPersistentFields =
+ new ObjectStreamField[0];
+
+
+ /**
+ * Returns the assertion status that would be assigned to this
+ * class if it were to be initialized at the time this method is invoked.
+ * If this class has had its assertion status set, the most recent
+ * setting will be returned; otherwise, if any package default assertion
+ * status pertains to this class, the most recent setting for the most
+ * specific pertinent package default assertion status is returned;
+ * otherwise, if this class is not a system class (i.e., it has a
+ * class loader) its class loader's default assertion status is returned;
+ * otherwise, the system class default assertion status is returned.
+ * <p>
+ * Few programmers will have any need for this method; it is provided
+ * for the benefit of the JRE itself. (It allows a class to determine at
+ * the time that it is initialized whether assertions should be enabled.)
+ * Note that this method is not guaranteed to return the actual
+ * assertion status that was (or will be) associated with the specified
+ * class when it was (or will be) initialized.
+ *
+ * @return the desired assertion status of the specified class.
+ * @see java.lang.ClassLoader#setClassAssertionStatus
+ * @see java.lang.ClassLoader#setPackageAssertionStatus
+ * @see java.lang.ClassLoader#setDefaultAssertionStatus
+ * @since 1.4
+ */
+ public boolean desiredAssertionStatus() {
+ ClassLoader loader = getClassLoader0();
+ // If the loader is null this is a system class, so ask the VM
+ if (loader == null)
+ return desiredAssertionStatus0(this);
+
+ // If the classloader has been initialized with the assertion
+ // directives, ask it. Otherwise, ask the VM.
+ synchronized(loader.assertionLock) {
+ if (loader.classAssertionStatus != null) {
+ return loader.desiredAssertionStatus(getName());
+ }
+ }
+ return desiredAssertionStatus0(this);
+ }
+
+ // Retrieves the desired assertion status of this class from the VM
+ private static native boolean desiredAssertionStatus0(Class<?> clazz);
+
+ /**
+ * Returns true if and only if this class was declared as an enum in the
+ * source code.
+ *
+ * @return true if and only if this class was declared as an enum in the
+ * source code
+ * @since 1.5
+ */
+ public boolean isEnum() {
+ // An enum must both directly extend java.lang.Enum and have
+ // the ENUM bit set; classes for specialized enum constants
+ // don't do the former.
+ return (this.getModifiers() & ENUM) != 0 &&
+ this.getSuperclass() == java.lang.Enum.class;
+ }
+
+ // Fetches the factory for reflective objects
+ private static ReflectionFactory getReflectionFactory() {
+ if (reflectionFactory == null) {
+ reflectionFactory =
+ java.security.AccessController.doPrivileged
+ (new ReflectionFactory.GetReflectionFactoryAction());
+ }
+ return reflectionFactory;
+ }
+ private static ReflectionFactory reflectionFactory;
+
+ /**
+ * Returns the elements of this enum class or null if this
+ * Class object does not represent an enum type.
+ *
+ * @return an array containing the values comprising the enum class
+ * represented by this Class object in the order they're
+ * declared, or null if this Class object does not
+ * represent an enum type
+ * @since 1.5
+ */
+ public T[] getEnumConstants() {
+ T[] values = getEnumConstantsShared();
+ return (values != null) ? values.clone() : null;
+ }
+
+ /**
+ * Returns the elements of this enum class or null if this
+ * Class object does not represent an enum type;
+ * identical to getEnumConstants except that the result is
+ * uncloned, cached, and shared by all callers.
+ */
+ T[] getEnumConstantsShared() {
+ T[] constants = enumConstants;
+ if (constants == null) {
+ if (!isEnum()) return null;
+ try {
+ final Method values = getMethod("values");
+ java.security.AccessController.doPrivileged(
+ new java.security.PrivilegedAction<>() {
+ public Void run() {
+ values.setAccessible(true);
+ return null;
+ }
+ });
+ @SuppressWarnings("unchecked")
+ T[] temporaryConstants = (T[])values.invoke(null);
+ enumConstants = constants = temporaryConstants;
+ }
+ // These can happen when users concoct enum-like classes
+ // that don't comply with the enum spec.
+ catch (InvocationTargetException | NoSuchMethodException |
+ IllegalAccessException ex) { return null; }
+ }
+ return constants;
+ }
+ private transient volatile T[] enumConstants;
+
+ /**
+ * Returns a map from simple name to enum constant. This package-private
+ * method is used internally by Enum to implement
+ * {@code public static <T extends Enum<T>> T valueOf(Class<T>, String)}
+ * efficiently. Note that the map is returned by this method is
+ * created lazily on first use. Typically it won't ever get created.
+ */
+ Map<String, T> enumConstantDirectory() {
+ Map<String, T> directory = enumConstantDirectory;
+ if (directory == null) {
+ T[] universe = getEnumConstantsShared();
+ if (universe == null)
+ throw new IllegalArgumentException(
+ getName() + " is not an enum type");
+ directory = new HashMap<>(2 * universe.length);
+ for (T constant : universe) {
+ directory.put(((Enum<?>)constant).name(), constant);
+ }
+ enumConstantDirectory = directory;
+ }
+ return directory;
+ }
+ private transient volatile Map<String, T> enumConstantDirectory;
+
+ /**
+ * Casts an object to the class or interface represented
+ * by this {@code Class} object.
+ *
+ * @param obj the object to be cast
+ * @return the object after casting, or null if obj is null
+ *
+ * @throws ClassCastException if the object is not
+ * null and is not assignable to the type T.
+ *
+ * @since 1.5
+ */
+ @SuppressWarnings("unchecked")
+ @HotSpotIntrinsicCandidate
+ public T cast(Object obj) {
+ if (obj != null && !isInstance(obj))
+ throw new ClassCastException(cannotCastMsg(obj));
+ return (T) obj;
+ }
+
+ private String cannotCastMsg(Object obj) {
+ return "Cannot cast " + obj.getClass().getName() + " to " + getName();
+ }
+
+ /**
+ * Casts this {@code Class} object to represent a subclass of the class
+ * represented by the specified class object. Checks that the cast
+ * is valid, and throws a {@code ClassCastException} if it is not. If
+ * this method succeeds, it always returns a reference to this class object.
+ *
+ * <p>This method is useful when a client needs to "narrow" the type of
+ * a {@code Class} object to pass it to an API that restricts the
+ * {@code Class} objects that it is willing to accept. A cast would
+ * generate a compile-time warning, as the correctness of the cast
+ * could not be checked at runtime (because generic types are implemented
+ * by erasure).
+ *
+ * @param <U> the type to cast this class object to
+ * @param clazz the class of the type to cast this class object to
+ * @return this {@code Class} object, cast to represent a subclass of
+ * the specified class object.
+ * @throws ClassCastException if this {@code Class} object does not
+ * represent a subclass of the specified class (here "subclass" includes
+ * the class itself).
+ * @since 1.5
+ */
+ @SuppressWarnings("unchecked")
+ public <U> Class<? extends U> asSubclass(Class<U> clazz) {
+ if (clazz.isAssignableFrom(this))
+ return (Class<? extends U>) this;
+ else
+ throw new ClassCastException(this.toString());
+ }
+
+ /**
+ * @throws NullPointerException {@inheritDoc}
+ * @since 1.5
+ */
+ @SuppressWarnings("unchecked")
+ public <A extends Annotation> A getAnnotation(Class<A> annotationClass) {
+ Objects.requireNonNull(annotationClass);
+
+ return (A) annotationData().annotations.get(annotationClass);
+ }
+
+ /**
+ * {@inheritDoc}
+ * @throws NullPointerException {@inheritDoc}
+ * @since 1.5
+ */
+ @Override
+ public boolean isAnnotationPresent(Class<? extends Annotation> annotationClass) {
+ return GenericDeclaration.super.isAnnotationPresent(annotationClass);
+ }
+
+ /**
+ * @throws NullPointerException {@inheritDoc}
+ * @since 1.8
+ */
+ @Override
+ public <A extends Annotation> A[] getAnnotationsByType(Class<A> annotationClass) {
+ Objects.requireNonNull(annotationClass);
+
+ AnnotationData annotationData = annotationData();
+ return AnnotationSupport.getAssociatedAnnotations(annotationData.declaredAnnotations,
+ this,
+ annotationClass);
+ }
+
+ /**
+ * @since 1.5
+ */
+ public Annotation[] getAnnotations() {
+ return AnnotationParser.toArray(annotationData().annotations);
+ }
+
+ /**
+ * @throws NullPointerException {@inheritDoc}
+ * @since 1.8
+ */
+ @Override
+ @SuppressWarnings("unchecked")
+ public <A extends Annotation> A getDeclaredAnnotation(Class<A> annotationClass) {
+ Objects.requireNonNull(annotationClass);
+
+ return (A) annotationData().declaredAnnotations.get(annotationClass);
+ }
+
+ /**
+ * @throws NullPointerException {@inheritDoc}
+ * @since 1.8
+ */
+ @Override
+ public <A extends Annotation> A[] getDeclaredAnnotationsByType(Class<A> annotationClass) {
+ Objects.requireNonNull(annotationClass);
+
+ return AnnotationSupport.getDirectlyAndIndirectlyPresent(annotationData().declaredAnnotations,
+ annotationClass);
+ }
+
+ /**
+ * @since 1.5
+ */
+ public Annotation[] getDeclaredAnnotations() {
+ return AnnotationParser.toArray(annotationData().declaredAnnotations);
+ }
+
+ // annotation data that might get invalidated when JVM TI RedefineClasses() is called
+ private static class AnnotationData {
+ final Map<Class<? extends Annotation>, Annotation> annotations;
+ final Map<Class<? extends Annotation>, Annotation> declaredAnnotations;
+
+ // Value of classRedefinedCount when we created this AnnotationData instance
+ final int redefinedCount;
+
+ AnnotationData(Map<Class<? extends Annotation>, Annotation> annotations,
+ Map<Class<? extends Annotation>, Annotation> declaredAnnotations,
+ int redefinedCount) {
+ this.annotations = annotations;
+ this.declaredAnnotations = declaredAnnotations;
+ this.redefinedCount = redefinedCount;
+ }
+ }
+
+ // Annotations cache
+ @SuppressWarnings("UnusedDeclaration")
+ private transient volatile AnnotationData annotationData;
+
+ private AnnotationData annotationData() {
+ while (true) { // retry loop
+ AnnotationData annotationData = this.annotationData;
+ int classRedefinedCount = this.classRedefinedCount;
+ if (annotationData != null &&
+ annotationData.redefinedCount == classRedefinedCount) {
+ return annotationData;
+ }
+ // null or stale annotationData -> optimistically create new instance
+ AnnotationData newAnnotationData = createAnnotationData(classRedefinedCount);
+ // try to install it
+ if (Atomic.casAnnotationData(this, annotationData, newAnnotationData)) {
+ // successfully installed new AnnotationData
+ return newAnnotationData;
+ }
+ }
+ }
+
+ private AnnotationData createAnnotationData(int classRedefinedCount) {
+ Map<Class<? extends Annotation>, Annotation> declaredAnnotations =
+ AnnotationParser.parseAnnotations(getRawAnnotations(), getConstantPool(), this);
+ Class<?> superClass = getSuperclass();
+ Map<Class<? extends Annotation>, Annotation> annotations = null;
+ if (superClass != null) {
+ Map<Class<? extends Annotation>, Annotation> superAnnotations =
+ superClass.annotationData().annotations;
+ for (Map.Entry<Class<? extends Annotation>, Annotation> e : superAnnotations.entrySet()) {
+ Class<? extends Annotation> annotationClass = e.getKey();
+ if (AnnotationType.getInstance(annotationClass).isInherited()) {
+ if (annotations == null) { // lazy construction
+ annotations = new LinkedHashMap<>((Math.max(
+ declaredAnnotations.size(),
+ Math.min(12, declaredAnnotations.size() + superAnnotations.size())
+ ) * 4 + 2) / 3
+ );
+ }
+ annotations.put(annotationClass, e.getValue());
+ }
+ }
+ }
+ if (annotations == null) {
+ // no inherited annotations -> share the Map with declaredAnnotations
+ annotations = declaredAnnotations;
+ } else {
+ // at least one inherited annotation -> declared may override inherited
+ annotations.putAll(declaredAnnotations);
+ }
+ return new AnnotationData(annotations, declaredAnnotations, classRedefinedCount);
+ }
+
+ // Annotation types cache their internal (AnnotationType) form
+
+ @SuppressWarnings("UnusedDeclaration")
+ private transient volatile AnnotationType annotationType;
+
+ boolean casAnnotationType(AnnotationType oldType, AnnotationType newType) {
+ return Atomic.casAnnotationType(this, oldType, newType);
+ }
+
+ AnnotationType getAnnotationType() {
+ return annotationType;
+ }
+
+ Map<Class<? extends Annotation>, Annotation> getDeclaredAnnotationMap() {
+ return annotationData().declaredAnnotations;
+ }
+
+ /* Backing store of user-defined values pertaining to this class.
+ * Maintained by the ClassValue class.
+ */
+ transient ClassValue.ClassValueMap classValueMap;
+
+ /**
+ * Returns an {@code AnnotatedType} object that represents the use of a
+ * type to specify the superclass of the entity represented by this {@code
+ * Class} object. (The <em>use</em> of type Foo to specify the superclass
+ * in '... extends Foo' is distinct from the <em>declaration</em> of type
+ * Foo.)
+ *
+ * <p> If this {@code Class} object represents a type whose declaration
+ * does not explicitly indicate an annotated superclass, then the return
+ * value is an {@code AnnotatedType} object representing an element with no
+ * annotations.
+ *
+ * <p> If this {@code Class} represents either the {@code Object} class, an
+ * interface type, an array type, a primitive type, or void, the return
+ * value is {@code null}.
+ *
+ * @return an object representing the superclass
+ * @since 1.8
+ */
+ public AnnotatedType getAnnotatedSuperclass() {
+ if (this == Object.class ||
+ isInterface() ||
+ isArray() ||
+ isPrimitive() ||
+ this == Void.TYPE) {
+ return null;
+ }
+
+ return TypeAnnotationParser.buildAnnotatedSuperclass(getRawTypeAnnotations(), getConstantPool(), this);
+ }
+
+ /**
+ * Returns an array of {@code AnnotatedType} objects that represent the use
+ * of types to specify superinterfaces of the entity represented by this
+ * {@code Class} object. (The <em>use</em> of type Foo to specify a
+ * superinterface in '... implements Foo' is distinct from the
+ * <em>declaration</em> of type Foo.)
+ *
+ * <p> If this {@code Class} object represents a class, the return value is
+ * an array containing objects representing the uses of interface types to
+ * specify interfaces implemented by the class. The order of the objects in
+ * the array corresponds to the order of the interface types used in the
+ * 'implements' clause of the declaration of this {@code Class} object.
+ *
+ * <p> If this {@code Class} object represents an interface, the return
+ * value is an array containing objects representing the uses of interface
+ * types to specify interfaces directly extended by the interface. The
+ * order of the objects in the array corresponds to the order of the
+ * interface types used in the 'extends' clause of the declaration of this
+ * {@code Class} object.
+ *
+ * <p> If this {@code Class} object represents a class or interface whose
+ * declaration does not explicitly indicate any annotated superinterfaces,
+ * the return value is an array of length 0.
+ *
+ * <p> If this {@code Class} object represents either the {@code Object}
+ * class, an array type, a primitive type, or void, the return value is an
+ * array of length 0.
+ *
+ * @return an array representing the superinterfaces
+ * @since 1.8
+ */
+ public AnnotatedType[] getAnnotatedInterfaces() {
+ return TypeAnnotationParser.buildAnnotatedInterfaces(getRawTypeAnnotations(), getConstantPool(), this);
+ }
+}