--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/api/scripting/NashornScriptEngineFactory.java	Fri Jun 05 12:38:53 2015 +0200
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/api/scripting/NashornScriptEngineFactory.java	Fri Jun 05 19:05:37 2015 +0530
@@ -178,8 +178,7 @@
      *         denies {@code RuntimePermission("nashorn.setConfig")}
      */
     public ScriptEngine getScriptEngine(final ClassFilter classFilter) {
-        Objects.requireNonNull(classFilter);
-        return newEngine(DEFAULT_OPTIONS, getAppClassLoader(), classFilter);
+        return newEngine(DEFAULT_OPTIONS, getAppClassLoader(), Objects.requireNonNull(classFilter));
     }
 
     /**
@@ -193,8 +192,7 @@
      *         denies {@code RuntimePermission("nashorn.setConfig")}
      */
     public ScriptEngine getScriptEngine(final String... args) {
-        Objects.requireNonNull(args);
-        return newEngine(args, getAppClassLoader(), null);
+        return newEngine(Objects.requireNonNull(args), getAppClassLoader(), null);
     }
 
     /**
@@ -209,8 +207,7 @@
      *         denies {@code RuntimePermission("nashorn.setConfig")}
      */
     public ScriptEngine getScriptEngine(final String[] args, final ClassLoader appLoader) {
-        Objects.requireNonNull(args);
-        return newEngine(args, appLoader, null);
+        return newEngine(Objects.requireNonNull(args), appLoader, null);
     }
 
     /**
@@ -226,9 +223,7 @@
      *         denies {@code RuntimePermission("nashorn.setConfig")}
      */
     public ScriptEngine getScriptEngine(final String[] args, final ClassLoader appLoader, final ClassFilter classFilter) {
-        Objects.requireNonNull(args);
-        Objects.requireNonNull(classFilter);
-        return newEngine(args, appLoader, classFilter);
+        return newEngine(Objects.requireNonNull(args), appLoader, Objects.requireNonNull(classFilter));
     }
 
     private ScriptEngine newEngine(final String[] args, final ClassLoader appLoader, final ClassFilter classFilter) {

--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/api/scripting/ScriptObjectMirror.java	Fri Jun 05 12:38:53 2015 +0200
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/api/scripting/ScriptObjectMirror.java	Fri Jun 05 19:05:37 2015 +0530
@@ -255,14 +255,12 @@
 
     @Override
     public void removeMember(final String name) {
-        Objects.requireNonNull(name);
-        remove(name);
+        remove(Objects.requireNonNull(name));
     }
 
     @Override
     public void setMember(final String name, final Object value) {
-        Objects.requireNonNull(name);
-        put(name, value);
+        put(Objects.requireNonNull(name), value);
     }
 
     @Override
@@ -429,7 +427,7 @@
 
     @Override
     public void putAll(final Map<? extends String, ? extends Object> map) {
-        Objects.requireNonNull(map, "map is null");
+        Objects.requireNonNull(map);
         final ScriptObject oldGlobal = Context.getGlobal();
         final boolean globalChanged = (oldGlobal != global);
         inGlobal(new Callable<Object>() {

--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/api/scripting/URLReader.java	Fri Jun 05 12:38:53 2015 +0200
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/api/scripting/URLReader.java	Fri Jun 05 19:05:37 2015 +0530
@@ -78,8 +78,7 @@
      * @throws NullPointerException if url is null
      */
     public URLReader(final URL url, final Charset cs) {
-        Objects.requireNonNull(url);
-        this.url = url;
+        this.url = Objects.requireNonNull(url);
         this.cs  = cs;
     }
 

--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/api/tree/ParserImpl.java	Fri Jun 05 12:38:53 2015 +0200
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/api/tree/ParserImpl.java	Fri Jun 05 19:05:37 2015 +0530
@@ -58,15 +58,13 @@
 
     @Override
     public CompilationUnitTree parse(final File file, final DiagnosticListener listener) throws IOException, NashornException {
-        Objects.requireNonNull(file);
-        final Source src = Source.sourceFor(file.getName(), file);
+        final Source src = Source.sourceFor(Objects.requireNonNull(file).getName(), file);
         return translate(makeParser(src, listener).parse());
     }
 
     @Override
     public CompilationUnitTree parse(final Path path, final DiagnosticListener listener) throws IOException, NashornException {
-        Objects.requireNonNull(path);
-        final Source src = Source.sourceFor(path.toString(), path);
+        final Source src = Source.sourceFor(Objects.requireNonNull(path).toString(), path);
         return translate(makeParser(src, listener).parse());
     }
 
@@ -78,9 +76,7 @@
 
     @Override
     public CompilationUnitTree parse(final String name, final Reader reader, final DiagnosticListener listener) throws IOException, NashornException {
-        Objects.requireNonNull(name);
-        Objects.requireNonNull(reader);
-        final Source src = Source.sourceFor(name, reader);
+        final Source src = Source.sourceFor(Objects.requireNonNull(name), Objects.requireNonNull(reader));
         return translate(makeParser(src, listener).parse());
     }
 
@@ -92,8 +88,7 @@
 
     @Override
     public CompilationUnitTree parse(final ScriptObjectMirror scriptObj, final DiagnosticListener listener) throws NashornException {
-        Objects.requireNonNull(scriptObj);
-        final Map<?,?> map = scriptObj;
+        final Map<?,?> map = Objects.requireNonNull(scriptObj);
         if (map.containsKey("script") && map.containsKey("name")) {
             final String script = JSType.toString(map.get("script"));
             final String name   = JSType.toString(map.get("name"));

--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/CompileUnit.java	Fri Jun 05 12:38:53 2015 +0200
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/CompileUnit.java	Fri Jun 05 19:05:37 2015 +0530
@@ -122,8 +122,7 @@
      * @param clazz class with code for this compile unit
      */
     void setCode(final Class<?> clazz) {
-        Objects.requireNonNull(clazz);
-        this.clazz = clazz;
+        this.clazz = Objects.requireNonNull(clazz);
         // Revisit this - refactor to avoid null-ed out non-final fields
         // null out emitter
         this.classEmitter = null;

--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/objects/Global.java	Fri Jun 05 12:38:53 2015 +0200
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/objects/Global.java	Fri Jun 05 19:05:37 2015 +0530
@@ -1005,9 +1005,7 @@
      * @return the global singleton
      */
     public static Global instance() {
-        final Global global = Context.getGlobal();
-        Objects.requireNonNull(global);
-        return global;
+        return Objects.requireNonNull(Context.getGlobal());
     }
 
     private static Global instanceFrom(final Object self) {

--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/ScriptLoader.java	Fri Jun 05 12:38:53 2015 +0200
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/ScriptLoader.java	Fri Jun 05 19:05:37 2015 +0530
@@ -70,7 +70,6 @@
      * @return Installed class.
      */
     synchronized Class<?> installClass(final String name, final byte[] data, final CodeSource cs) {
-        Objects.requireNonNull(cs);
-        return defineClass(name, data, 0, data.length, cs);
+        return defineClass(name, data, 0, data.length, Objects.requireNonNull(cs));
     }
 }

--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/linker/JavaSuperAdapter.java	Fri Jun 05 12:38:53 2015 +0200
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/linker/JavaSuperAdapter.java	Fri Jun 05 19:05:37 2015 +0530
@@ -36,8 +36,7 @@
     private final Object adapter;
 
     JavaSuperAdapter(final Object adapter) {
-        Objects.requireNonNull(adapter);
-        this.adapter = adapter;
+        this.adapter = Objects.requireNonNull(adapter);
     }
 
     public Object getAdapter() {

--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/options/Options.java	Fri Jun 05 12:38:53 2015 +0200
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/options/Options.java	Fri Jun 05 19:05:37 2015 +0530
@@ -136,6 +136,12 @@
         return options.toString();
     }
 
+    private static void checkPropertyName(final String name) {
+        if (! Objects.requireNonNull(name).startsWith("nashorn.")) {
+            throw new IllegalArgumentException(name);
+        }
+    }
+
     /**
      * Convenience function for getting system properties in a safe way
 
@@ -144,11 +150,7 @@
      * @return true if set to true, default value if unset or set to false
      */
     public static boolean getBooleanProperty(final String name, final Boolean defValue) {
-        Objects.requireNonNull(name);
-        if (!name.startsWith("nashorn.")) {
-            throw new IllegalArgumentException(name);
-        }
-
+        checkPropertyName(name);
         return AccessController.doPrivileged(
                 new PrivilegedAction<Boolean>() {
                     @Override
@@ -185,11 +187,7 @@
      * @return string property if set or default value
      */
     public static String getStringProperty(final String name, final String defValue) {
-        Objects.requireNonNull(name);
-        if (! name.startsWith("nashorn.")) {
-            throw new IllegalArgumentException(name);
-        }
-
+        checkPropertyName(name);
         return AccessController.doPrivileged(
                 new PrivilegedAction<String>() {
                     @Override
@@ -212,11 +210,7 @@
      * @return integer property if set or default value
      */
     public static int getIntProperty(final String name, final int defValue) {
-        Objects.requireNonNull(name);
-        if (! name.startsWith("nashorn.")) {
-            throw new IllegalArgumentException(name);
-        }
-
+        checkPropertyName(name);
         return AccessController.doPrivileged(
                 new PrivilegedAction<Integer>() {
                     @Override