--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/java.base/share/classes/java/lang/annotation/Annotation.java Sun Aug 17 15:54:13 2014 +0100
@@ -0,0 +1,136 @@
+/*
+ * Copyright (c) 2003, 2013, 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.annotation;
+
+/**
+ * The common interface extended by all annotation types. Note that an
+ * interface that manually extends this one does <i>not</i> define
+ * an annotation type. Also note that this interface does not itself
+ * define an annotation type.
+ *
+ * More information about annotation types can be found in section 9.6 of
+ * <cite>The Java™ Language Specification</cite>.
+ *
+ * The {@link java.lang.reflect.AnnotatedElement} interface discusses
+ * compatibility concerns when evolving an annotation type from being
+ * non-repeatable to being repeatable.
+ *
+ * @author Josh Bloch
+ * @since 1.5
+ */
+public interface Annotation {
+ /**
+ * Returns true if the specified object represents an annotation
+ * that is logically equivalent to this one. In other words,
+ * returns true if the specified object is an instance of the same
+ * annotation type as this instance, all of whose members are equal
+ * to the corresponding member of this annotation, as defined below:
+ * <ul>
+ * <li>Two corresponding primitive typed members whose values are
+ * <tt>x</tt> and <tt>y</tt> are considered equal if <tt>x == y</tt>,
+ * unless their type is <tt>float</tt> or <tt>double</tt>.
+ *
+ * <li>Two corresponding <tt>float</tt> members whose values
+ * are <tt>x</tt> and <tt>y</tt> are considered equal if
+ * <tt>Float.valueOf(x).equals(Float.valueOf(y))</tt>.
+ * (Unlike the <tt>==</tt> operator, NaN is considered equal
+ * to itself, and <tt>0.0f</tt> unequal to <tt>-0.0f</tt>.)
+ *
+ * <li>Two corresponding <tt>double</tt> members whose values
+ * are <tt>x</tt> and <tt>y</tt> are considered equal if
+ * <tt>Double.valueOf(x).equals(Double.valueOf(y))</tt>.
+ * (Unlike the <tt>==</tt> operator, NaN is considered equal
+ * to itself, and <tt>0.0</tt> unequal to <tt>-0.0</tt>.)
+ *
+ * <li>Two corresponding <tt>String</tt>, <tt>Class</tt>, enum, or
+ * annotation typed members whose values are <tt>x</tt> and <tt>y</tt>
+ * are considered equal if <tt>x.equals(y)</tt>. (Note that this
+ * definition is recursive for annotation typed members.)
+ *
+ * <li>Two corresponding array typed members <tt>x</tt> and <tt>y</tt>
+ * are considered equal if <tt>Arrays.equals(x, y)</tt>, for the
+ * appropriate overloading of {@link java.util.Arrays#equals}.
+ * </ul>
+ *
+ * @return true if the specified object represents an annotation
+ * that is logically equivalent to this one, otherwise false
+ */
+ boolean equals(Object obj);
+
+ /**
+ * Returns the hash code of this annotation, as defined below:
+ *
+ * <p>The hash code of an annotation is the sum of the hash codes
+ * of its members (including those with default values), as defined
+ * below:
+ *
+ * The hash code of an annotation member is (127 times the hash code
+ * of the member-name as computed by {@link String#hashCode()}) XOR
+ * the hash code of the member-value, as defined below:
+ *
+ * <p>The hash code of a member-value depends on its type:
+ * <ul>
+ * <li>The hash code of a primitive value <tt><i>v</i></tt> is equal to
+ * <tt><i>WrapperType</i>.valueOf(<i>v</i>).hashCode()</tt>, where
+ * <tt><i>WrapperType</i></tt> is the wrapper type corresponding
+ * to the primitive type of <tt><i>v</i></tt> ({@link Byte},
+ * {@link Character}, {@link Double}, {@link Float}, {@link Integer},
+ * {@link Long}, {@link Short}, or {@link Boolean}).
+ *
+ * <li>The hash code of a string, enum, class, or annotation member-value
+ I <tt><i>v</i></tt> is computed as by calling
+ * <tt><i>v</i>.hashCode()</tt>. (In the case of annotation
+ * member values, this is a recursive definition.)
+ *
+ * <li>The hash code of an array member-value is computed by calling
+ * the appropriate overloading of
+ * {@link java.util.Arrays#hashCode(long[]) Arrays.hashCode}
+ * on the value. (There is one overloading for each primitive
+ * type, and one for object reference types.)
+ * </ul>
+ *
+ * @return the hash code of this annotation
+ */
+ int hashCode();
+
+ /**
+ * Returns a string representation of this annotation. The details
+ * of the representation are implementation-dependent, but the following
+ * may be regarded as typical:
+ * <pre>
+ * @com.acme.util.Name(first=Alfred, middle=E., last=Neuman)
+ * </pre>
+ *
+ * @return a string representation of this annotation
+ */
+ String toString();
+
+ /**
+ * Returns the annotation type of this annotation.
+ * @return the annotation type of this annotation
+ */
+ Class<? extends Annotation> annotationType();
+}