Merge

src/macosx/classes/sun/lwawt/LWToolkit.java

@@ -38,6 +38,7 @@ import java.util.*;
 import sun.awt.*;
 import sun.lwawt.macosx.*;
 import sun.print.*;
+import sun.security.util.SecurityConstants;
 
 public abstract class LWToolkit extends SunToolkit implements Runnable {
 
@@ -502,7 +503,7 @@ public abstract class LWToolkit extends SunToolkit implements Runnable {
     public Clipboard getSystemClipboard() {
         SecurityManager security = System.getSecurityManager();
         if (security != null) {
-            security.checkSystemClipboardAccess();
+            security.checkPermission(SecurityConstants.AWT.ACCESS_CLIPBOARD_PERMISSION);
         }
 
         synchronized (this) {

src/macosx/classes/sun/nio/ch/KQueueArrayWrapper.java

@@ -87,6 +87,7 @@ class KQueueArrayWrapper {
     private int incomingInterruptFD;
 
     static {
+        IOUtil.load();
         initStructSizes();
         String datamodel = java.security.AccessController.doPrivileged(
             new sun.security.action.GetPropertyAction("sun.arch.data.model")

src/macosx/classes/sun/nio/ch/KQueueSelectorImpl.java

@@ -246,9 +246,4 @@ class KQueueSelectorImpl
         }
         return this;
     }
-
-
-    static {
-        Util.load();
-    }
 }

src/share/back/SDE.c

@@ -28,6 +28,12 @@
 #include "util.h"
 #include "SDE.h"
 
+#ifdef __APPLE__
+/* use setjmp/longjmp versions that do not save/restore the signal mask */
+#define setjmp _setjmp
+#define longjmp _longjmp
+#endif
+
 /**
  * This SourceDebugExtension code does not
  * allow concurrent translation - due to caching method.

src/share/classes/java/awt/TextComponent.java

@@ -35,6 +35,7 @@ import java.text.BreakIterator;
 import javax.swing.text.AttributeSet;
 import javax.accessibility.*;
 import java.awt.im.InputMethodRequests;
+import sun.security.util.SecurityConstants;
 
 /**
  * The <code>TextComponent</code> class is the superclass of
@@ -728,7 +729,7 @@ public class TextComponent extends Component implements Accessible {
         SecurityManager sm = System.getSecurityManager();
         if (sm == null) return true;
         try {
-            sm.checkSystemClipboardAccess();
+            sm.checkPermission(SecurityConstants.AWT.ACCESS_CLIPBOARD_PERMISSION);
             return true;
         } catch (SecurityException e) {}
         return false;

src/share/classes/java/awt/Toolkit.java

@@ -1270,12 +1270,8 @@ public abstract class Toolkit {
      * <p>
      * Each actual implementation of this method should first check if there
      * is a security manager installed. If there is, the method should call
-     * the security manager's <code>checkSystemClipboardAccess</code> method
-     * to ensure it's ok to to access the system clipboard. If the default
-     * implementation of <code>checkSystemClipboardAccess</code> is used (that
-     * is, that method is not overriden), then this results in a call to the
-     * security manager's <code>checkPermission</code> method with an <code>
-     * AWTPermission("accessClipboard")</code> permission.
+     * the security manager's {@link SecurityManager#checkPermission
+     * checkPermission} method to check {@code AWTPermission("accessClipboard")}.
      *
      * @return    the system Clipboard
      * @exception HeadlessException if GraphicsEnvironment.isHeadless()
@@ -1318,14 +1314,9 @@ public abstract class Toolkit {
      * system selection <code>Clipboard</code> as described above.
      * <p>
      * Each actual implementation of this method should first check if there
-     * is a <code>SecurityManager</code> installed. If there is, the method
-     * should call the <code>SecurityManager</code>'s
-     * <code>checkSystemClipboardAccess</code> method to ensure that client
-     * code has access the system selection. If the default implementation of
-     * <code>checkSystemClipboardAccess</code> is used (that is, if the method
-     * is not overridden), then this results in a call to the
-     * <code>SecurityManager</code>'s <code>checkPermission</code> method with
-     * an <code>AWTPermission("accessClipboard")</code> permission.
+     * is a security manager installed. If there is, the method should call
+     * the security manager's {@link SecurityManager#checkPermission
+     * checkPermission} method to check {@code AWTPermission("accessClipboard")}.
      *
      * @return the system selection as a <code>Clipboard</code>, or
      *         <code>null</code> if the native platform does not support a
@@ -1699,25 +1690,20 @@ public abstract class Toolkit {
      * therefore not assume that the EventQueue instance returned
      * by this method will be shared by other applets or the system.
      *
-     * <p>First, if there is a security manager, its
-     * <code>checkAwtEventQueueAccess</code>
-     * method is called.
-     * If  the default implementation of <code>checkAwtEventQueueAccess</code>
-     * is used (that is, that method is not overriden), then this results in
-     * a call to the security manager's <code>checkPermission</code> method
-     * with an <code>AWTPermission("accessEventQueue")</code> permission.
+     * <p> If there is a security manager then its
+     * {@link SecurityManager#checkPermission checkPermission} method
+     * is called to check {@code AWTPermission("accessEventQueue")}.
      *
      * @return    the <code>EventQueue</code> object
      * @throws  SecurityException
-     *          if a security manager exists and its <code>{@link
-     *          java.lang.SecurityManager#checkAwtEventQueueAccess}</code>
-     *          method denies access to the <code>EventQueue</code>
+     *          if a security manager is set and it denies access to
+     *          the {@code EventQueue}
      * @see     java.awt.AWTPermission
     */
     public final EventQueue getSystemEventQueue() {
         SecurityManager security = System.getSecurityManager();
         if (security != null) {
-          security.checkAwtEventQueueAccess();
+            security.checkPermission(SecurityConstants.AWT.CHECK_AWT_EVENTQUEUE_PERMISSION);
         }
         return getSystemEventQueueImpl();
     }

src/share/classes/java/awt/Window.java

@@ -195,10 +195,9 @@ public class Window extends Container implements Accessible {
     /**
      * This represents the warning message that is
      * to be displayed in a non secure window. ie :
-     * a window that has a security manager installed for
-     * which calling SecurityManager.checkTopLevelWindow()
-     * is false.  This message can be displayed anywhere in
-     * the window.
+     * a window that has a security manager installed that denies
+     * {@code AWTPermission("showWindowWithoutWarningBanner")}.
+     * This message can be displayed anywhere in the window.
      *
      * @serial
      * @see #getWarningString
@@ -417,11 +416,10 @@ public class Window extends Container implements Accessible {
      * Constructs a new, initially invisible window in default size with the
      * specified {@code GraphicsConfiguration}.
      * <p>
-     * If there is a security manager, this method first calls
-     * the security manager's {@code checkTopLevelWindow}
-     * method with {@code this}
-     * as its argument to determine whether or not the window
-     * must be displayed with a warning banner.
+     * If there is a security manager, then it is invoked to check
+     * {@code AWTPermission("showWindowWithoutWarningBanner")}
+     * to determine whether or not the window must be displayed with
+     * a warning banner.
      *
      * @param gc the {@code GraphicsConfiguration} of the target screen
      *     device. If {@code gc} is {@code null}, the system default
@@ -432,7 +430,6 @@ public class Window extends Container implements Accessible {
      *     {@code GraphicsEnvironment.isHeadless()} returns {@code true}
      *
      * @see java.awt.GraphicsEnvironment#isHeadless
-     * @see java.lang.SecurityManager#checkTopLevelWindow
      */
     Window(GraphicsConfiguration gc) {
         init(gc);
@@ -511,25 +508,16 @@ public class Window extends Container implements Accessible {
 
     /**
      * Constructs a new, initially invisible window in the default size.
-     *
-     * <p>First, if there is a security manager, its
-     * {@code checkTopLevelWindow}
-     * method is called with {@code this}
-     * as its argument
-     * to see if it's ok to display the window without a warning banner.
-     * If the default implementation of {@code checkTopLevelWindow}
-     * is used (that is, that method is not overriden), then this results in
-     * a call to the security manager's {@code checkPermission} method
-     * with an {@code AWTPermission("showWindowWithoutWarningBanner")}
-     * permission. It that method raises a SecurityException,
-     * {@code checkTopLevelWindow} returns false, otherwise it
-     * returns true. If it returns false, a warning banner is created.
+     * <p>
+     * If there is a security manager set, it is invoked to check
+     * {@code AWTPermission("showWindowWithoutWarningBanner")}.
+     * If that check fails with a {@code SecurityException} then a warning
+     * banner is created.
      *
      * @exception HeadlessException when
      *     {@code GraphicsEnvironment.isHeadless()} returns {@code true}
      *
      * @see java.awt.GraphicsEnvironment#isHeadless
-     * @see java.lang.SecurityManager#checkTopLevelWindow
      */
     Window() throws HeadlessException {
         GraphicsEnvironment.checkHeadless();
@@ -541,11 +529,10 @@ public class Window extends Container implements Accessible {
      * {@code Frame} as its owner. The window will not be focusable
      * unless its owner is showing on the screen.
      * <p>
-     * If there is a security manager, this method first calls
-     * the security manager's {@code checkTopLevelWindow}
-     * method with {@code this}
-     * as its argument to determine whether or not the window
-     * must be displayed with a warning banner.
+     * If there is a security manager set, it is invoked to check
+     * {@code AWTPermission("showWindowWithoutWarningBanner")}.
+     * If that check fails with a {@code SecurityException} then a warning
+     * banner is created.
      *
      * @param owner the {@code Frame} to act as owner or {@code null}
      *    if this window has no owner
@@ -555,7 +542,6 @@ public class Window extends Container implements Accessible {
      *    {@code GraphicsEnvironment.isHeadless} returns {@code true}
      *
      * @see java.awt.GraphicsEnvironment#isHeadless
-     * @see java.lang.SecurityManager#checkTopLevelWindow
      * @see #isShowing
      */
     public Window(Frame owner) {
@@ -570,11 +556,10 @@ public class Window extends Container implements Accessible {
      * unless its nearest owning {@code Frame} or {@code Dialog}
      * is showing on the screen.
      * <p>
-     * If there is a security manager, this method first calls
-     * the security manager's {@code checkTopLevelWindow}
-     * method with {@code this}
-     * as its argument to determine whether or not the window
-     * must be displayed with a warning banner.
+     * If there is a security manager set, it is invoked to check
+     * {@code AWTPermission("showWindowWithoutWarningBanner")}.
+     * If that check fails with a {@code SecurityException} then a
+     * warning banner is created.
      *
      * @param owner the {@code Window} to act as owner or
      *     {@code null} if this window has no owner
@@ -585,7 +570,6 @@ public class Window extends Container implements Accessible {
      *     {@code true}
      *
      * @see       java.awt.GraphicsEnvironment#isHeadless
-     * @see       java.lang.SecurityManager#checkTopLevelWindow
      * @see       #isShowing
      *
      * @since     1.2
@@ -603,11 +587,10 @@ public class Window extends Container implements Accessible {
      * its nearest owning {@code Frame} or {@code Dialog}
      * is showing on the screen.
      * <p>
-     * If there is a security manager, this method first calls
-     * the security manager's {@code checkTopLevelWindow}
-     * method with {@code this}
-     * as its argument to determine whether or not the window
-     * must be displayed with a warning banner.
+     * If there is a security manager set, it is invoked to check
+     * {@code AWTPermission("showWindowWithoutWarningBanner")}. If that
+     * check fails with a {@code SecurityException} then a warning banner
+     * is created.
      *
      * @param owner the window to act as owner or {@code null}
      *     if this window has no owner
@@ -621,7 +604,6 @@ public class Window extends Container implements Accessible {
      *     {@code true}
      *
      * @see       java.awt.GraphicsEnvironment#isHeadless
-     * @see       java.lang.SecurityManager#checkTopLevelWindow
      * @see       GraphicsConfiguration#getBounds
      * @see       #isShowing
      * @since     1.3
@@ -1362,10 +1344,9 @@ public class Window extends Container implements Accessible {
      * Gets the warning string that is displayed with this window.
      * If this window is insecure, the warning string is displayed
      * somewhere in the visible area of the window. A window is
-     * insecure if there is a security manager, and the security
-     * manager's {@code checkTopLevelWindow} method returns
-     * {@code false} when this window is passed to it as an
-     * argument.
+     * insecure if there is a security manager and the security
+     * manager denies
+     * {@code AWTPermission("showWindowWithoutWarningBanner")}.
      * <p>
      * If the window is secure, then {@code getWarningString}
      * returns {@code null}. If the window is insecure, this
@@ -1373,7 +1354,6 @@ public class Window extends Container implements Accessible {
      * {@code awt.appletWarning}
      * and returns the string value of that property.
      * @return    the warning string for this window.
-     * @see       java.lang.SecurityManager#checkTopLevelWindow(java.lang.Object)
      */
     public final String getWarningString() {
         return warningString;
@@ -1383,10 +1363,12 @@ public class Window extends Container implements Accessible {
         warningString = null;
         SecurityManager sm = System.getSecurityManager();
         if (sm != null) {
-            if (!sm.checkTopLevelWindow(this)) {
+            try {
+                sm.checkPermission(SecurityConstants.AWT.TOPLEVEL_WINDOW_PERMISSION);
+            } catch (SecurityException se) {
                 // make sure the privileged action is only
                 // for getting the property! We don't want the
-                // above checkTopLevelWindow call to always succeed!
+                // above checkPermission call to always succeed!
                 warningString = AccessController.doPrivileged(
                       new GetPropertyAction("awt.appletWarning",
                                             "Java Applet Window"));

src/share/classes/java/awt/event/InputEvent.java

@@ -33,6 +33,7 @@ import java.util.Arrays;
 
 import sun.awt.AWTAccessor;
 import sun.util.logging.PlatformLogger;
+import sun.security.util.SecurityConstants;
 
 /**
  * The root event class for all component-level input events.
@@ -350,7 +351,7 @@ public abstract class InputEvent extends ComponentEvent {
             SecurityManager sm = System.getSecurityManager();
             if (sm != null) {
                 try {
-                    sm.checkSystemClipboardAccess();
+                    sm.checkPermission(SecurityConstants.AWT.ACCESS_CLIPBOARD_PERMISSION);
                     b = true;
                 } catch (SecurityException se) {
                     if (logger.isLoggable(PlatformLogger.Level.FINE)) {

src/share/classes/java/io/Console.java

@@ -124,9 +124,11 @@ public final class Console implements Flushable
     * {@link java.io.Reader#read(java.nio.CharBuffer) read(java.nio.CharBuffer)}
     * on the returned object will not read in characters beyond the line
     * bound for each invocation, even if the destination buffer has space for
-    * more characters. A line bound is considered to be any one of a line feed
-    * (<tt>'\n'</tt>), a carriage return (<tt>'\r'</tt>), a carriage return
-    * followed immediately by a linefeed, or an end of stream.
+    * more characters. The {@code Reader}'s {@code read} methods may block if a
+    * line bound has not been entered or reached on the console's input device.
+    * A line bound is considered to be any one of a line feed (<tt>'\n'</tt>),
+    * a carriage return (<tt>'\r'</tt>), a carriage return followed immediately
+    * by a linefeed, or an end of stream.
     *
     * @return  The reader associated with this console
     */

src/share/classes/java/lang/AutoCloseable.java

@@ -26,7 +26,24 @@
 package java.lang;
 
 /**
- * A resource that must be closed when it is no longer needed.
+ * An object that may hold resources (such as file or socket handles)
+ * until it is closed. The {@link #close()} method of an {@code AutoCloseable}
+ * object is called automatically when exiting a {@code
+ * try}-with-resources block for which the object has been declared in
+ * the resource specification header. This construction ensures prompt
+ * release, avoiding resource exhaustion exceptions and errors that
+ * may otherwise occur.
+ *
+ * @apiNote
+ * <p>It is possible, and in fact common, for a base class to
+ * implement AutoCloseable even though not all of its subclasses or
+ * instances will hold releasable resources.  For code that must operate
+ * in complete generality, or when it is known that the {@code AutoCloseable}
+ * instance requires resource release, it is recommended to use {@code
+ * try}-with-resources constructions. However, when using facilities such as
+ * {@link java.util.stream.Stream} that support both I/O-based and
+ * non-I/O-based forms, {@code try}-with-resources blocks are in
+ * general unnecessary when using non-I/O-based forms.
  *
  * @author Josh Bloch
  * @since 1.7

src/share/classes/java/lang/Class.java

@@ -1484,22 +1484,24 @@ public final class Class<T> implements java.io.Serializable,
     /**
      * Returns an array containing {@code Field} objects reflecting all
      * the accessible public fields of the class or interface represented by
-     * this {@code Class} object.  The elements in the array returned are
-     * not sorted and are not in any particular order.  This method returns an
-     * array of length 0 if the class or interface has no accessible public
-     * fields, or if it represents an array class, a primitive type, or void.
+     * this {@code Class} object.
      *
-     * <p> Specifically, if this {@code Class} object represents a class,
-     * this method returns the public fields of this class and of all its
-     * superclasses.  If this {@code Class} object represents an
-     * interface, this method returns the fields of this interface and of all
-     * its superinterfaces.
+     * <p> If this {@code Class} object represents a class or interface with no
+     * 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.
+     *
+     * <p> If this {@code Class} object represents an interface, then this
+     * method returns the fields of the interface and of all its
+     * superinterfaces.
      *
-     * <p> The implicit length field for array class is not reflected by this
-     * method. User code should use the methods of class {@code Array} to
-     * manipulate arrays.
+     * <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> See <em>The Java Language Specification</em>, sections 8.2 and 8.3.
+     * <p> The elements in the array returned are not sorted and are not in any
+     * particular order.
      *
      * @return the array of {@code Field} objects representing the
      *         public fields
@@ -1512,6 +1514,8 @@ public final class Class<T> implements java.io.Serializable,
      *         of this class.
      *
      * @since JDK1.1
+     * @jls 8.2 Class Members
+     * @jls 8.3 Field Declarations
      */
     @CallerSensitive
     public Field[] getFields() throws SecurityException {
@@ -1595,13 +1599,14 @@ public final class Class<T> implements java.io.Serializable,
 
 
     /**
-     * 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.
+     * 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 represented by this object:
+     * 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>
@@ -1614,7 +1619,8 @@ public final class Class<T> implements java.io.Serializable,
      *      is thrown.</LI>
      * </OL>
      *
-     * <p> See <em>The Java Language Specification</em>, sections 8.2 and 8.3.
+     * <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
@@ -1631,6 +1637,8 @@ public final class Class<T> implements java.io.Serializable,
      *         of this class.
      *
      * @since JDK1.1
+     * @jls 8.2 Class Members
+     * @jls 8.3 Field Declarations
      */
     @CallerSensitive
     public Field getField(String name)
@@ -1800,12 +1808,15 @@ public final class Class<T> implements java.io.Serializable,
      * 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.
-     * The elements in the array returned are not sorted and are not in any
-     * particular order.  This method returns an array of length 0 if the class
-     * or interface declares no fields, or if this {@code Class} object
-     * represents a primitive type, an array class, or void.
      *
-     * <p> See <em>The Java Language Specification</em>, sections 8.2 and 8.3.
+     * <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 array returned 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
@@ -1831,6 +1842,8 @@ public final class Class<T> implements java.io.Serializable,
      *          </ul>
      *
      * @since JDK1.1
+     * @jls 8.2 Class Members
+     * @jls 8.3 Field Declarations
      */
     @CallerSensitive
     public Field[] getDeclaredFields() throws SecurityException {
@@ -1935,9 +1948,11 @@ public final class Class<T> implements java.io.Serializable,
     /**
      * 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.  Note that this method
-     * will not reflect the {@code length} field of an array 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
@@ -1967,6 +1982,8 @@ public final class Class<T> implements java.io.Serializable,
      *          </ul>
      *
      * @since JDK1.1
+     * @jls 8.2 Class Members
+     * @jls 8.3 Field Declarations
      */
     @CallerSensitive
     public Field getDeclaredField(String name)

src/share/classes/java/lang/SecurityManager.java

@@ -1336,9 +1336,16 @@ class SecurityManager {
      *             top-level windows; <code>false</code> otherwise.
      * @exception  NullPointerException if the <code>window</code> argument is
      *             <code>null</code>.
+     * @deprecated The dependency on {@code AWTPermission} creates an
+     *             impediment to future modularization of the Java platform.
+     *             Users of this method should instead invoke
+     *             {@link #checkPermission} directly.
+     *             This method will be changed in a future release to check
+     *             the permission {@code java.security.AllPermission}.
      * @see        java.awt.Window
      * @see        #checkPermission(java.security.Permission) checkPermission
      */
+    @Deprecated
     public boolean checkTopLevelWindow(Object window) {
         if (window == null) {
             throw new NullPointerException("window can't be null");
@@ -1398,8 +1405,15 @@ class SecurityManager {
      * @since   JDK1.1
      * @exception  SecurityException  if the calling thread does not have
      *             permission to access the system clipboard.
+     * @deprecated The dependency on {@code AWTPermission} creates an
+     *             impediment to future modularization of the Java platform.
+     *             Users of this method should instead invoke
+     *             {@link #checkPermission} directly.
+     *             This method will be changed in a future release to check
+     *             the permission {@code java.security.AllPermission}.
      * @see        #checkPermission(java.security.Permission) checkPermission
      */
+    @Deprecated
     public void checkSystemClipboardAccess() {
         Permission perm = SecurityConstants.AWT.ACCESS_CLIPBOARD_PERMISSION;
         if (perm == null) {
@@ -1427,8 +1441,15 @@ class SecurityManager {
      * @since   JDK1.1
      * @exception  SecurityException  if the calling thread does not have
      *             permission to access the AWT event queue.
+     * @deprecated The dependency on {@code AWTPermission} creates an
+     *             impediment to future modularization of the Java platform.
+     *             Users of this method should instead invoke
+     *             {@link #checkPermission} directly.
+     *             This method will be changed in a future release to check
+     *             the permission {@code java.security.AllPermission}.
      * @see        #checkPermission(java.security.Permission) checkPermission
      */
+    @Deprecated
     public void checkAwtEventQueueAccess() {
         Permission perm = SecurityConstants.AWT.CHECK_AWT_EVENTQUEUE_PERMISSION;
         if (perm == null) {

src/share/classes/java/lang/String.java

@@ -2457,8 +2457,8 @@ public final class String
      *     String message = String.join(" ", strings);
      *     //message returned is: "Java is cool"
      *
-     *     Set<String> strings = new HashSet<>();
-     *     Strings.add("Java"); strings.add("is");
+     *     Set<String> strings = new LinkedHashSet<>();
+     *     strings.add("Java"); strings.add("is");
      *     strings.add("very"); strings.add("cool");
      *     String message = String.join("-", strings);
      *     //message returned is: "Java-is-very-cool"
@@ -2652,7 +2652,7 @@ public final class String
      * returns {@code "t\u005Cu0131tle"}, where '\u005Cu0131' is the
      * LATIN SMALL LETTER DOTLESS I character.
      * To obtain correct results for locale insensitive strings, use
-     * {@code toLowerCase(Locale.ENGLISH)}.
+     * {@code toLowerCase(Locale.ROOT)}.
      * <p>
      * @return  the {@code String}, converted to lowercase.
      * @see     java.lang.String#toLowerCase(Locale)
@@ -2815,7 +2815,7 @@ public final class String
      * returns {@code "T\u005Cu0130TLE"}, where '\u005Cu0130' is the
      * LATIN CAPITAL LETTER I WITH DOT ABOVE character.
      * To obtain correct results for locale insensitive strings, use
-     * {@code toUpperCase(Locale.ENGLISH)}.
+     * {@code toUpperCase(Locale.ROOT)}.
      * <p>
      * @return  the {@code String}, converted to uppercase.
      * @see     java.lang.String#toUpperCase(Locale)

src/share/classes/java/lang/invoke/AbstractValidatingLambdaMetafactory.java

@@ -124,7 +124,7 @@ import static sun.invoke.util.Wrapper.isWrapperType;
         this.samMethodType  = samMethodType;
 
         this.implMethod = implMethod;
-        this.implInfo = new MethodHandleInfo(implMethod);
+        this.implInfo = caller.revealDirect(implMethod);
         // @@@ Temporary work-around pending resolution of 8005119
         this.implKind = (implInfo.getReferenceKind() == MethodHandleInfo.REF_invokeSpecial)
                         ? MethodHandleInfo.REF_invokeVirtual

src/share/classes/java/lang/invoke/InfoFromMemberName.java

+/*
+ * Copyright (c) 2012, 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.invoke;
+
+import java.security.*;
+import java.lang.reflect.*;
+import java.lang.invoke.MethodHandleNatives.Constants;
+import java.lang.invoke.MethodHandles.Lookup;
+import static java.lang.invoke.MethodHandleStatics.*;
+
+/*
+ * Auxiliary to MethodHandleInfo, wants to nest in MethodHandleInfo but must be non-public.
+ */
+/*non-public*/
+final
+class InfoFromMemberName implements MethodHandleInfo {
+    private final MemberName member;
+    private final int referenceKind;
+
+    InfoFromMemberName(Lookup lookup, MemberName member, byte referenceKind) {
+        assert(member.isResolved() || member.isMethodHandleInvoke());
+        assert(member.referenceKindIsConsistentWith(referenceKind));
+        this.member = member;
+        this.referenceKind = referenceKind;
+    }
+
+    @Override
+    public Class<?> getDeclaringClass() {
+        return member.getDeclaringClass();
+    }
+
+    @Override
+    public String getName() {
+        return member.getName();
+    }
+
+    @Override
+    public MethodType getMethodType() {
+        return member.getMethodOrFieldType();
+    }
+
+    @Override
+    public int getModifiers() {
+        return member.getModifiers();
+    }
+
+    @Override
+    public int getReferenceKind() {
+        return referenceKind;
+    }
+
+    @Override
+    public String toString() {
+        return MethodHandleInfo.toString(getReferenceKind(), getDeclaringClass(), getName(), getMethodType());
+    }
+
+    @Override
+    public <T extends Member> T reflectAs(Class<T> expected, Lookup lookup) {
+        if (member.isMethodHandleInvoke() && !member.isVarargs()) {
+            // This member is an instance of a signature-polymorphic method, which cannot be reflected
+            // A method handle invoker can come in either of two forms:
+            // A generic placeholder (present in the source code, and varargs)
+            // and a signature-polymorphic instance (synthetic and not varargs).
+            // For more information see comments on {@link MethodHandleNatives#linkMethod}.
+            throw new IllegalArgumentException("cannot reflect signature polymorphic method");
+        }
+        Member mem = AccessController.doPrivileged(new PrivilegedAction<Member>() {
+                public Member run() {
+                    try {
+                        return reflectUnchecked();
+                    } catch (ReflectiveOperationException ex) {
+                        throw new IllegalArgumentException(ex);
+                    }
+                }
+            });
+        try {
+            Class<?> defc = getDeclaringClass();
+            byte refKind = (byte) getReferenceKind();
+            lookup.checkAccess(refKind, defc, convertToMemberName(refKind, mem));
+        } catch (IllegalAccessException ex) {
+            throw new IllegalArgumentException(ex);
+        }
+        return expected.cast(mem);
+    }
+
+    private Member reflectUnchecked() throws ReflectiveOperationException {
+        byte refKind = (byte) getReferenceKind();
+        Class<?> defc = getDeclaringClass();
+        boolean isPublic = Modifier.isPublic(getModifiers());
+        if (MethodHandleNatives.refKindIsMethod(refKind)) {
+            if (isPublic)
+                return defc.getMethod(getName(), getMethodType().parameterArray());
+            else
+                return defc.getDeclaredMethod(getName(), getMethodType().parameterArray());
+        } else if (MethodHandleNatives.refKindIsConstructor(refKind)) {
+            if (isPublic)
+                return defc.getConstructor(getMethodType().parameterArray());
+            else
+                return defc.getDeclaredConstructor(getMethodType().parameterArray());
+        } else if (MethodHandleNatives.refKindIsField(refKind)) {
+            if (isPublic)
+                return defc.getField(getName());
+            else
+                return defc.getDeclaredField(getName());
+        } else {
+            throw new IllegalArgumentException("referenceKind="+refKind);
+        }
+    }
+
+    private static MemberName convertToMemberName(byte refKind, Member mem) throws IllegalAccessException {
+        if (mem instanceof Method) {
+            boolean wantSpecial = (refKind == REF_invokeSpecial);
+            return new MemberName((Method) mem, wantSpecial);
+        } else if (mem instanceof Constructor) {
+            return new MemberName((Constructor) mem);
+        } else if (mem instanceof Field) {
+            boolean isSetter = (refKind == REF_putField || refKind == REF_putStatic);
+            return new MemberName((Field) mem, isSetter);
+        }
+        throw new InternalError(mem.getClass().getName());
+    }
+}

src/share/classes/java/lang/invoke/InvokerBytecodeGenerator.java

@@ -612,6 +612,12 @@ class InvokerBytecodeGenerator {
             return false;  // inner class of some sort
         if (cls.getClassLoader() != MethodHandle.class.getClassLoader())
             return false;  // not on BCP
+        MethodType mtype = member.getMethodOrFieldType();
+        if (!isStaticallyNameable(mtype.returnType()))
+            return false;
+        for (Class<?> ptype : mtype.parameterArray())
+            if (!isStaticallyNameable(ptype))
+                return false;
         if (!member.isPrivate() && VerifyAccess.isSamePackage(MethodHandle.class, cls))
             return true;   // in java.lang.invoke package
         if (member.isPublic() && isStaticallyNameable(cls))

src/share/classes/java/lang/invoke/Invokers.java

@@ -87,6 +87,7 @@ class Invokers {
             lform = invokeForm(mtype, true, MethodTypeForm.LF_EX_INVOKER);
             invoker = SimpleMethodHandle.make(invokerType, lform);
         }
+        invoker = invoker.withInternalMemberName(MemberName.makeMethodHandleInvoke("invokeExact", mtype));
         assert(checkInvoker(invoker));
         exactInvoker = invoker;
         return invoker;
@@ -110,6 +111,7 @@ class Invokers {
             lform = invokeForm(mtype, true, MethodTypeForm.LF_GEN_INVOKER);
             invoker = SimpleMethodHandle.make(invokerType, lform);
         }
+        invoker = invoker.withInternalMemberName(MemberName.makeMethodHandleInvoke("invoke", mtype));
         assert(checkInvoker(invoker));
         generalInvoker = invoker;
         return invoker;

src/share/classes/java/lang/invoke/MemberName.java

@@ -320,14 +320,18 @@ import java.util.Objects;
 
     /** Utility method to query if this member is a method handle invocation (invoke or invokeExact). */
     public boolean isMethodHandleInvoke() {
-        final int bits = Modifier.NATIVE | Modifier.FINAL;
+        final int bits = MH_INVOKE_MODS;
         final int negs = Modifier.STATIC;
         if (testFlags(bits | negs, bits) &&
             clazz == MethodHandle.class) {
-            return name.equals("invoke") || name.equals("invokeExact");
+            return isMethodHandleInvokeName(name);
         }
         return false;
     }
+    public static boolean isMethodHandleInvokeName(String name) {
+        return name.equals("invoke") || name.equals("invokeExact");
+    }
+    private static final int MH_INVOKE_MODS = Modifier.NATIVE | Modifier.FINAL | Modifier.PUBLIC;
 
     /** Utility method to query the modifier flags of this member. */
     public boolean isStatic() {
@@ -482,12 +486,27 @@ import java.util.Objects;
         m.getClass();  // NPE check
         // fill in vmtarget, vmindex while we have m in hand:
         MethodHandleNatives.init(this, m);
+        if (clazz == null) {  // MHN.init failed
+            if (m.getDeclaringClass() == MethodHandle.class &&
+                isMethodHandleInvokeName(m.getName())) {
+                // The JVM did not reify this signature-polymorphic instance.
+                // Need a special case here.
+                // See comments on MethodHandleNatives.linkMethod.
+                MethodType type = MethodType.methodType(m.getReturnType(), m.getParameterTypes());
+                int flags = flagsMods(IS_METHOD, m.getModifiers(), REF_invokeVirtual);
+                init(MethodHandle.class, m.getName(), type, flags);
+                if (isMethodHandleInvoke())
+                    return;
+            }
+            throw new LinkageError(m.toString());
+        }
         assert(isResolved() && this.clazz != null);
         this.name = m.getName();
         if (this.type == null)
             this.type = new Object[] { m.getReturnType(), m.getParameterTypes() };
         if (wantSpecial) {
-            assert(!isAbstract()) : this;
+            if (isAbstract())
+                throw new AbstractMethodError(this.toString());
             if (getReferenceKind() == REF_invokeVirtual)
                 changeReferenceKind(REF_invokeSpecial, REF_invokeVirtual);
             else if (getReferenceKind() == REF_invokeInterface)
@@ -562,6 +581,22 @@ import java.util.Objects;
         initResolved(true);
     }
 
+    /**
+     * Create a name for a signature-polymorphic invoker.
+     * This is a placeholder for a signature-polymorphic instance
+     * (of MH.invokeExact, etc.) that the JVM does not reify.
+     * See comments on {@link MethodHandleNatives#linkMethod}.
+     */
+    static MemberName makeMethodHandleInvoke(String name, MethodType type) {
+        return makeMethodHandleInvoke(name, type, MH_INVOKE_MODS | SYNTHETIC);
+    }
+    static MemberName makeMethodHandleInvoke(String name, MethodType type, int mods) {
+        MemberName mem = new MemberName(MethodHandle.class, name, type, REF_invokeVirtual);
+        mem.flags |= mods;  // it's not resolved, but add these modifiers anyway
+        assert(mem.isMethodHandleInvoke()) : mem;
+        return mem;
+    }
+
     // bare-bones constructor; the JVM will fill it in
     MemberName() { }
 

src/share/classes/java/lang/invoke/MethodHandle.java

@@ -1284,6 +1284,21 @@ assertEquals("[three, thee, tee]", asListFix.invoke((Object)argv).toString());
         return null;  // DMH returns DMH.member
     }
 
+    /*non-public*/
+    MethodHandle withInternalMemberName(MemberName member) {
+        if (member != null) {
+            return MethodHandleImpl.makeWrappedMember(this, member);
+        } else if (internalMemberName() == null) {
+            // The required internaMemberName is null, and this MH (like most) doesn't have one.
+            return this;
+        } else {
+            // The following case is rare. Mask the internalMemberName by wrapping the MH in a BMH.
+            MethodHandle result = rebind();
+            assert (result.internalMemberName() == null);
+            return result;
+        }
+    }
+
     /*non-public*/
     boolean isInvokeSpecial() {
         return false;  // DMH.Special returns true
@@ -1356,7 +1371,7 @@ assertEquals("[three, thee, tee]", asListFix.invoke((Object)argv).toString());
     MethodHandle rebind() {
         // Bind 'this' into a new invoker, of the known class BMH.
         MethodType type2 = type();
-        LambdaForm form2 = reinvokerForm(type2.basicType());
+        LambdaForm form2 = reinvokerForm(this);
         // form2 = lambda (bmh, arg*) { thismh = bmh[0]; invokeBasic(thismh, arg*) }
         return BoundMethodHandle.bindSingle(type2, form2, this);
     }
@@ -1369,23 +1384,38 @@ assertEquals("[three, thee, tee]", asListFix.invoke((Object)argv).toString());
     /** Create a LF which simply reinvokes a target of the given basic type.
      *  The target MH must override {@link #reinvokerTarget} to provide the target.
      */
-    static LambdaForm reinvokerForm(MethodType mtype) {
-        mtype = mtype.basicType();
+    static LambdaForm reinvokerForm(MethodHandle target) {
+        MethodType mtype = target.type().basicType();
         LambdaForm reinvoker = mtype.form().cachedLambdaForm(MethodTypeForm.LF_REINVOKE);
         if (reinvoker != null)  return reinvoker;
-        MethodHandle MH_invokeBasic = MethodHandles.basicInvoker(mtype);
+        if (mtype.parameterSlotCount() >= MethodType.MAX_MH_ARITY)
+            return makeReinvokerForm(target.type(), target);  // cannot cache this
+        reinvoker = makeReinvokerForm(mtype, null);
+        return mtype.form().setCachedLambdaForm(MethodTypeForm.LF_REINVOKE, reinvoker);
+    }
+    private static LambdaForm makeReinvokerForm(MethodType mtype, MethodHandle customTargetOrNull) {
+        boolean customized = (customTargetOrNull != null);
+        MethodHandle MH_invokeBasic = customized ? null : MethodHandles.basicInvoker(mtype);
         final int THIS_BMH    = 0;
         final int ARG_BASE    = 1;
         final int ARG_LIMIT   = ARG_BASE + mtype.parameterCount();
         int nameCursor = ARG_LIMIT;
-        final int NEXT_MH     = nameCursor++;
+        final int NEXT_MH     = customized ? -1 : nameCursor++;
         final int REINVOKE    = nameCursor++;
         LambdaForm.Name[] names = LambdaForm.arguments(nameCursor - ARG_LIMIT, mtype.invokerType());
-        names[NEXT_MH] = new LambdaForm.Name(NF_reinvokerTarget, names[THIS_BMH]);
-        Object[] targetArgs = Arrays.copyOfRange(names, THIS_BMH, ARG_LIMIT, Object[].class);
-        targetArgs[0] = names[NEXT_MH];  // overwrite this MH with next MH
-        names[REINVOKE] = new LambdaForm.Name(MH_invokeBasic, targetArgs);
-        return mtype.form().setCachedLambdaForm(MethodTypeForm.LF_REINVOKE, new LambdaForm("BMH.reinvoke", ARG_LIMIT, names));
+        Object[] targetArgs;
+        MethodHandle targetMH;
+        if (customized) {
+            targetArgs = Arrays.copyOfRange(names, ARG_BASE, ARG_LIMIT, Object[].class);
+            targetMH = customTargetOrNull;
+        } else {
+            names[NEXT_MH] = new LambdaForm.Name(NF_reinvokerTarget, names[THIS_BMH]);
+            targetArgs = Arrays.copyOfRange(names, THIS_BMH, ARG_LIMIT, Object[].class);
+            targetArgs[0] = names[NEXT_MH];  // overwrite this MH with next MH
+            targetMH = MethodHandles.basicInvoker(mtype);
+        }
+        names[REINVOKE] = new LambdaForm.Name(targetMH, targetArgs);
+        return new LambdaForm("BMH.reinvoke", ARG_LIMIT, names);
     }
 
     private static final LambdaForm.NamedFunction NF_reinvokerTarget;

src/share/classes/java/lang/invoke/MethodHandleImpl.java

@@ -317,7 +317,7 @@ import static java.lang.invoke.MethodHandles.Lookup.IMPL_LOOKUP;
         private MethodHandle cache;
 
         AsVarargsCollector(MethodHandle target, MethodType type, Class<?> arrayType) {
-            super(type, reinvokerForm(type));
+            super(type, reinvokerForm(target));
             this.target = target;
             this.arrayType = arrayType;
             this.cache = target.asCollector(arrayType, 0);
@@ -778,16 +778,27 @@ import static java.lang.invoke.MethodHandles.Lookup.IMPL_LOOKUP;
     }
     static <T extends Throwable> Empty throwException(T t) throws T { throw t; }
 
-    static MethodHandle FAKE_METHOD_HANDLE_INVOKE;
-    static
-    MethodHandle fakeMethodHandleInvoke(MemberName method) {
-        MethodType type = method.getInvocationType();
-        assert(type.equals(MethodType.methodType(Object.class, Object[].class)));
-        MethodHandle mh = FAKE_METHOD_HANDLE_INVOKE;
+    static MethodHandle[] FAKE_METHOD_HANDLE_INVOKE = new MethodHandle[2];
+    static MethodHandle fakeMethodHandleInvoke(MemberName method) {
+        int idx;
+        assert(method.isMethodHandleInvoke());
+        switch (method.getName()) {
+        case "invoke":       idx = 0; break;
+        case "invokeExact":  idx = 1; break;
+        default:             throw new InternalError(method.getName());
+        }
+        MethodHandle mh = FAKE_METHOD_HANDLE_INVOKE[idx];
         if (mh != null)  return mh;
-        mh = throwException(type.insertParameterTypes(0, UnsupportedOperationException.class));
+        MethodType type = MethodType.methodType(Object.class, UnsupportedOperationException.class,
+                                                MethodHandle.class, Object[].class);
+        mh = throwException(type);
         mh = mh.bindTo(new UnsupportedOperationException("cannot reflectively invoke MethodHandle"));
-        FAKE_METHOD_HANDLE_INVOKE = mh;
+        if (!method.getInvocationType().equals(mh.type()))
+            throw new InternalError(method.toString());
+        mh = mh.withInternalMemberName(method);
+        mh = mh.asVarargsCollector(Object[].class);
+        assert(method.isVarargs());
+        FAKE_METHOD_HANDLE_INVOKE[idx] = mh;
         return mh;
     }
 
@@ -821,7 +832,7 @@ import static java.lang.invoke.MethodHandles.Lookup.IMPL_LOOKUP;
             MethodHandle vamh = prepareForInvoker(mh);
             // Cache the result of makeInjectedInvoker once per argument class.
             MethodHandle bccInvoker = CV_makeInjectedInvoker.get(hostClass);
-            return restoreToType(bccInvoker.bindTo(vamh), mh.type());
+            return restoreToType(bccInvoker.bindTo(vamh), mh.type(), mh.internalMemberName());
         }
 
         private static MethodHandle makeInjectedInvoker(Class<?> hostClass) {
@@ -876,8 +887,11 @@ import static java.lang.invoke.MethodHandles.Lookup.IMPL_LOOKUP;
         }
 
         // Undo the adapter effect of prepareForInvoker:
-        private static MethodHandle restoreToType(MethodHandle vamh, MethodType type) {
-            return vamh.asCollector(Object[].class, type.parameterCount()).asType(type);
+        private static MethodHandle restoreToType(MethodHandle vamh, MethodType type, MemberName member) {
+            MethodHandle mh = vamh.asCollector(Object[].class, type.parameterCount());
+            mh = mh.asType(type);
+            mh = mh.withInternalMemberName(member);
+            return mh;
         }
 
         private static final MethodHandle MH_checkCallerClass;
@@ -939,4 +953,41 @@ import static java.lang.invoke.MethodHandles.Lookup.IMPL_LOOKUP;
             }
         }
     }
+
+
+    /** This subclass allows a wrapped method handle to be re-associated with an arbitrary member name. */
+    static class WrappedMember extends MethodHandle {
+        private final MethodHandle target;
+        private final MemberName member;
+
+        private WrappedMember(MethodHandle target, MethodType type, MemberName member) {
+            super(type, reinvokerForm(target));
+            this.target = target;
+            this.member = member;
+        }
+
+        @Override
+        MethodHandle reinvokerTarget() {
+            return target;
+        }
+        @Override
+        MemberName internalMemberName() {
+            return member;
+        }
+        @Override
+        boolean isInvokeSpecial() {
+            return target.isInvokeSpecial();
+        }
+        @Override
+        MethodHandle viewAsType(MethodType newType) {
+            return new WrappedMember(target, newType, member);
+        }
+    }
+
+    static MethodHandle makeWrappedMember(MethodHandle target, MemberName member) {
+        if (member.equals(target.internalMemberName()))
+            return target;
+        return new WrappedMember(target, target.type(), member);
+    }
+
 }

src/share/classes/java/lang/invoke/MethodHandleInfo.java

@@ -24,80 +24,246 @@
  */
 
 package java.lang.invoke;
+
+import java.lang.reflect.*;
+import java.util.*;
 import java.lang.invoke.MethodHandleNatives.Constants;
+import java.lang.invoke.MethodHandles.Lookup;
+import static java.lang.invoke.MethodHandleStatics.*;
 
 /**
- * Cracking (reflecting) method handles back into their constituent symbolic parts.
+ * A symbolic reference obtained by cracking a method handle into its consitutent symbolic parts.
+ * To crack a direct method handle, call {@link Lookup#revealDirect Lookup.revealDirect}.
+ * <p>
+ * A <em>direct method handle</em> represents a method, constructor, or field without
+ * any intervening argument bindings or other transformations.
+ * The method, constructor, or field referred to by a direct method handle is called
+ * its <em>underlying member</em>.
+ * Direct method handles may be obtained in any of these ways:
+ * <ul>
+ * <li>By executing an {@code ldc} instruction on a {@code CONSTANT_MethodHandle} constant.
+ *     (See the Java Virtual Machine Specification, sections 4.4.8 and 5.4.3.)
+ * <li>By calling one of the <a href="MethodHandles.Lookup.html#lookups">Lookup Factory Methods</a>,
+ *     such as {@link Lookup#findVirtual Lookup.findVirtual},
+ *     to resolve a symbolic reference into a method handle.
+ *     A symbolic reference consists of a class, name string, and type.
+ * <li>By calling the factory method {@link Lookup#unreflect Lookup.unreflect}
+ *     or {@link Lookup#unreflectSpecial Lookup.unreflectSpecial}
+ *     to convert a {@link Method} into a method handle.
+ * <li>By calling the factory method {@link Lookup#unreflectConstructor Lookup.unreflectConstructor}
+ *     to convert a {@link Constructor} into a method handle.
+ * <li>By calling the factory method {@link Lookup#unreflectGetter Lookup.unreflectGetter}
+ *     or {@link Lookup#unreflectSetter Lookup.unreflectSetter}
+ *     to convert a {@link Field} into a method handle.
+ * </ul>
+ * In all of these cases, it is possible to crack the resulting direct method handle
+ * to recover a symbolic reference for the underlying method, constructor, or field.
+ * Cracking must be done via a {@code Lookup} object equivalent to that which created
+ * the target method handle, or which has enough access permissions to recreate
+ * an equivalent method handle.
  *
+ * <h1><a name="refkinds"></a>Reference kinds</h1>
+ * The <a href="MethodHandles.Lookup.html#lookups">Lookup Factory Methods</a>
+ * correspond to all major use cases for methods, constructors, and fields.
+ * These use cases may be distinguished using small integers as follows:
+ * <table border=1 cellpadding=5 summary="reference kinds">
+ * <tr><th>reference kind</th><th>descriptive name</th><th>scope</th><th>member</th><th>behavior</th></tr>
+ * <tr>
+ *     <td>{@code 1}</td><td>{@code REF_getField}</td><td>{@code class}</td>
+ *     <td>{@code FT f;}</td><td>{@code (T) this.f;}</td>
+ * </tr>
+ * <tr>
+ *     <td>{@code 2}</td><td>{@code REF_getStatic}</td><td>{@code class} or {@code interface}</td>
+ *     <td>{@code static}<br>{@code FT f;}</td><td>{@code (T) C.f;}</td>
+ * </tr>
+ * <tr>
+ *     <td>{@code 3}</td><td>{@code REF_putField}</td><td>{@code class}</td>
+ *     <td>{@code FT f;}</td><td>{@code this.f = x;}</td>
+ * </tr>
+ * <tr>
+ *     <td>{@code 4}</td><td>{@code REF_putStatic}</td><td>{@code class}</td>
+ *     <td>{@code static}<br>{@code FT f;}</td><td>{@code C.f = arg;}</td>
+ * </tr>
+ * <tr>
+ *     <td>{@code 5}</td><td>{@code REF_invokeVirtual}</td><td>{@code class}</td>
+ *     <td>{@code T m(A*);}</td><td>{@code (T) this.m(arg*);}</td>
+ * </tr>
+ * <tr>
+ *     <td>{@code 6}</td><td>{@code REF_invokeStatic}</td><td>{@code class} or {@code interface}</td>
+ *     <td>{@code static}<br>{@code T m(A*);}</td><td>{@code (T) C.m(arg*);}</td>
+ * </tr>
+ * <tr>
+ *     <td>{@code 7}</td><td>{@code REF_invokeSpecial}</td><td>{@code class} or {@code interface}</td>
+ *     <td>{@code T m(A*);}</td><td>{@code (T) super.m(arg*);}</td>
+ * </tr>
+ * <tr>
+ *     <td>{@code 8}</td><td>{@code REF_newInvokeSpecial}</td><td>{@code class}</td>
+ *     <td>{@code C(A*);}</td><td>{@code new C(arg*);}</td>
+ * </tr>
+ * <tr>
+ *     <td>{@code 9}</td><td>{@code REF_invokeInterface}</td><td>{@code interface}</td>
+ *     <td>{@code T m(A*);}</td><td>{@code (T) this.m(arg*);}</td>
+ * </tr>
+ * </table>
+ * @since 1.8
  */
-final class MethodHandleInfo {
-   public static final int
-       REF_getField                = Constants.REF_getField,
-       REF_getStatic               = Constants.REF_getStatic,
-       REF_putField                = Constants.REF_putField,
-       REF_putStatic               = Constants.REF_putStatic,
-       REF_invokeVirtual           = Constants.REF_invokeVirtual,
-       REF_invokeStatic            = Constants.REF_invokeStatic,
-       REF_invokeSpecial           = Constants.REF_invokeSpecial,
-       REF_newInvokeSpecial        = Constants.REF_newInvokeSpecial,
-       REF_invokeInterface         = Constants.REF_invokeInterface;
+public
+interface MethodHandleInfo {
+    /**
+     * A direct method handle reference kind,
+     * as defined in the <a href="MethodHandleInfo.html#refkinds">table above</a>.
+     */
+    public static final int
+        REF_getField                = Constants.REF_getField,
+        REF_getStatic               = Constants.REF_getStatic,
+        REF_putField                = Constants.REF_putField,
+        REF_putStatic               = Constants.REF_putStatic,
+        REF_invokeVirtual           = Constants.REF_invokeVirtual,
+        REF_invokeStatic            = Constants.REF_invokeStatic,
+        REF_invokeSpecial           = Constants.REF_invokeSpecial,
+        REF_newInvokeSpecial        = Constants.REF_newInvokeSpecial,
+        REF_invokeInterface         = Constants.REF_invokeInterface;
+
+    /**
+     * Returns the reference kind of the cracked method handle, which in turn
+     * determines whether the method handle's underlying member was a constructor, method, or field.
+     * See the <a href="MethodHandleInfo.html#refkinds">table above</a> for definitions.
+     * @return the integer code for the kind of reference used to access the underlying member
+     */
+    public int getReferenceKind();
 
-   private final Class<?> declaringClass;
-   private final String name;
-   private final MethodType methodType;
-   private final int referenceKind;
+    /**
+     * Returns the class in which the cracked method handle's underlying member was defined.
+     * @return the declaring class of the underlying member
+     */
+    public Class<?> getDeclaringClass();
 
-   public MethodHandleInfo(MethodHandle mh) {
-       MemberName mn = mh.internalMemberName();
-       if (mn == null)  throw new IllegalArgumentException("not a direct method handle");
-       this.declaringClass = mn.getDeclaringClass();
-       this.name = mn.getName();
-       this.methodType = mn.getMethodOrFieldType();
-       byte refKind = mn.getReferenceKind();
-       if (refKind == REF_invokeSpecial && !mh.isInvokeSpecial())
-           // Devirtualized method invocation is usually formally virtual.
-           refKind = REF_invokeVirtual;
-       this.referenceKind = refKind;
-   }
+    /**
+     * Returns the name of the cracked method handle's underlying member.
+     * This is {@code "&lt;init&gt;"} if the underlying member was a constructor,
+     * else it is a simple method name or field name.
+     * @return the simple name of the underlying member
+     */
+    public String getName();
 
-   public Class<?> getDeclaringClass() {
-       return declaringClass;
-   }
+    /**
+     * Returns the nominal type of the cracked symbolic reference, expressed as a method type.
+     * If the reference is to a constructor, the return type will be {@code void}.
+     * If it is to a non-static method, the method type will not mention the {@code this} parameter.
+     * If it is to a field and the requested access is to read the field,
+     * the method type will have no parameters and return the field type.
+     * If it is to a field and the requested access is to write the field,
+     * the method type will have one parameter of the field type and return {@code void}.
+     * <p>
+     * Note that original direct method handle may include a leading {@code this} parameter,
+     * or (in the case of a constructor) will replace the {@code void} return type
+     * with the constructed class.
+     * The nominal type does not include any {@code this} parameter,
+     * and (in the case of a constructor) will return {@code void}.
+     * @return the type of the underlying member, expressed as a method type
+     */
+    public MethodType getMethodType();
 
-   public String getName() {
-       return name;
-   }
+    // Utility methods.
+    // NOTE: class/name/type and reference kind constitute a symbolic reference
+    // member and modifiers are an add-on, derived from Core Reflection (or the equivalent)
 
-   public MethodType getMethodType() {
-       return methodType;
-   }
+    /**
+     * Reflects the underlying member as a method, constructor, or field object.
+     * If the underlying member is public, it is reflected as if by
+     * {@code getMethod}, {@code getConstructor}, or {@code getField}.
+     * Otherwise, it is reflected as if by
+     * {@code getDeclaredMethod}, {@code getDeclaredConstructor}, or {@code getDeclaredField}.
+     * The underlying member must be accessible to the given lookup object.
+     * @param <T> the desired type of the result, either {@link Member} or a subtype
+     * @param expected a class object representing the desired result type {@code T}
+     * @param lookup the lookup object that created this MethodHandleInfo, or one with equivalent access privileges
+     * @return a reference to the method, constructor, or field object
+     * @exception ClassCastException if the member is not of the expected type
+     * @exception NullPointerException if either argument is {@code null}
+     * @exception IllegalArgumentException if the underlying member is not accessible to the given lookup object
+     */
+    public <T extends Member> T reflectAs(Class<T> expected, Lookup lookup);
 
-   public int getModifiers() {
-       return -1; //TODO
-   }
+    /**
+     * Returns the access modifiers of the underlying member.
+     * @return the Java language modifiers for underlying member,
+     *         or -1 if the member cannot be accessed
+     * @see Modifier
+     * @see reflectAs
+     */
+    public int getModifiers();
 
-   public int getReferenceKind() {
-       return referenceKind;
-   }
+    /**
+     * Determines if the underlying member was a variable arity method or constructor.
+     * Such members are represented by method handles that are varargs collectors.
+     * @implSpec
+     * This produces a result equivalent to:
+     * <pre>{@code
+     *     getReferenceKind() >= REF_invokeVirtual && Modifier.isTransient(getModifiers())
+     * }</pre>
+     *
+     *
+     * @return {@code true} if and only if the underlying member was declared with variable arity.
+     */
+    // spelling derived from java.lang.reflect.Executable, not MethodHandle.isVarargsCollector
+    public default boolean isVarArgs()  {
+        // fields are never varargs:
+        if (MethodHandleNatives.refKindIsField((byte) getReferenceKind()))
+            return false;
+        // not in the public API: Modifier.VARARGS
+        final int ACC_VARARGS = 0x00000080;  // from JVMS 4.6 (Table 4.20)
+        assert(ACC_VARARGS == Modifier.TRANSIENT);
+        return Modifier.isTransient(getModifiers());
+    }
 
-   static String getReferenceKindString(int referenceKind) {
-        switch (referenceKind) {
-            case REF_getField: return "getfield";
-            case REF_getStatic: return "getstatic";
-            case REF_putField: return "putfield";
-            case REF_putStatic: return "putstatic";
-            case REF_invokeVirtual: return "invokevirtual";
-            case REF_invokeStatic: return "invokestatic";
-            case REF_invokeSpecial: return "invokespecial";
-            case REF_newInvokeSpecial: return "newinvokespecial";
-            case REF_invokeInterface: return "invokeinterface";
-            default: return "UNKNOWN_REFENCE_KIND" + "[" + referenceKind + "]";
-        }
+    /**
+     * Returns the descriptive name of the given reference kind,
+     * as defined in the <a href="MethodHandleInfo.html#refkinds">table above</a>.
+     * The conventional prefix "REF_" is omitted.
+     * @param referenceKind an integer code for a kind of reference used to access a class member
+     * @return a mixed-case string such as {@code "getField"}
+     * @exception IllegalArgumentException if the argument is not a valid
+     *            <a href="MethodHandleInfo.html#refkinds">reference kind number</a>
+     */
+    public static String referenceKindToString(int referenceKind) {
+        if (!MethodHandleNatives.refKindIsValid(referenceKind))
+            throw newIllegalArgumentException("invalid reference kind", referenceKind);
+        return MethodHandleNatives.refKindName((byte)referenceKind);
     }
 
-    @Override
-    public String toString() {
-        return String.format("%s %s.%s:%s", getReferenceKindString(referenceKind),
-                             declaringClass.getName(), name, methodType);
+    /**
+     * Returns a string representation for a {@code MethodHandleInfo},
+     * given the four parts of its symbolic reference.
+     * This is defined to be of the form {@code "RK C.N:MT"}, where {@code RK} is the
+     * {@linkplain #referenceKindToString reference kind string} for {@code kind},
+     * {@code C} is the {@linkplain java.lang.Class#getName name} of {@code defc}
+     * {@code N} is the {@code name}, and
+     * {@code MT} is the {@code type}.
+     * These four values may be obtained from the
+     * {@linkplain #getReferenceKind reference kind},
+     * {@linkplain #getDeclaringClass declaring class},
+     * {@linkplain #getName member name},
+     * and {@linkplain #getMethodType method type}
+     * of a {@code MethodHandleInfo} object.
+     *
+     * @implSpec
+     * This produces a result equivalent to:
+     * <pre>{@code
+     *     String.format("%s %s.%s:%s", referenceKindToString(kind), defc.getName(), name, type)
+     * }</pre>
+     *
+     * @param kind the {@linkplain #getReferenceKind reference kind} part of the symbolic reference
+     * @param defc the {@linkplain #getDeclaringClass declaring class} part of the symbolic reference
+     * @param name the {@linkplain #getName member name} part of the symbolic reference
+     * @param type the {@linkplain #getMethodType method type} part of the symbolic reference
+     * @return a string of the form {@code "RK C.N:MT"}
+     * @exception IllegalArgumentException if the first argument is not a valid
+     *            <a href="MethodHandleInfo.html#refkinds">reference kind number</a>
+     * @exception NullPointerException if any reference argument is {@code null}
+     */
+    public static String toString(int kind, Class<?> defc, String name, MethodType type) {
+        Objects.requireNonNull(name); Objects.requireNonNull(type);
+        return String.format("%s %s.%s:%s", referenceKindToString(kind), defc.getName(), name, type);
     }
 }

src/share/classes/java/lang/invoke/MethodHandleNatives.java

@@ -205,6 +205,9 @@ class MethodHandleNatives {
     static boolean refKindIsMethod(byte refKind) {
         return !refKindIsField(refKind) && (refKind != REF_newInvokeSpecial);
     }
+    static boolean refKindIsConstructor(byte refKind) {
+        return (refKind == REF_newInvokeSpecial);
+    }
     static boolean refKindHasReceiver(byte refKind) {
         assert(refKindIsValid(refKind));
         return (refKind & 1) != 0;
@@ -313,7 +316,65 @@ class MethodHandleNatives {
      * The method assumes the following arguments on the stack:
      * 0: the method handle being invoked
      * 1-N: the arguments to the method handle invocation
-     * N+1: an implicitly added type argument (the given MethodType)
+     * N+1: an optional, implicitly added argument (typically the given MethodType)
+     * <p>
+     * The nominal method at such a call site is an instance of
+     * a signature-polymorphic method (see @PolymorphicSignature).
+     * Such method instances are user-visible entities which are
+     * "split" from the generic placeholder method in {@code MethodHandle}.
+     * (Note that the placeholder method is not identical with any of
+     * its instances.  If invoked reflectively, is guaranteed to throw an
+     * {@code UnsupportedOperationException}.)
+     * If the signature-polymorphic method instance is ever reified,
+     * it appears as a "copy" of the original placeholder
+     * (a native final member of {@code MethodHandle}) except
+     * that its type descriptor has shape required by the instance,
+     * and the method instance is <em>not</em> varargs.
+     * The method instance is also marked synthetic, since the
+     * method (by definition) does not appear in Java source code.
+     * <p>
+     * The JVM is allowed to reify this method as instance metadata.
+     * For example, {@code invokeBasic} is always reified.
+     * But the JVM may instead call {@code linkMethod}.
+     * If the result is an * ordered pair of a {@code (method, appendix)},
+     * the method gets all the arguments (0..N inclusive)
+     * plus the appendix (N+1), and uses the appendix to complete the call.
+     * In this way, one reusable method (called a "linker method")
+     * can perform the function of any number of polymorphic instance
+     * methods.
+     * <p>
+     * Linker methods are allowed to be weakly typed, with any or
+     * all references rewritten to {@code Object} and any primitives
+     * (except {@code long}/{@code float}/{@code double})
+     * rewritten to {@code int}.
+     * A linker method is trusted to return a strongly typed result,
+     * according to the specific method type descriptor of the
+     * signature-polymorphic instance it is emulating.
+     * This can involve (as necessary) a dynamic check using
+     * data extracted from the appendix argument.
+     * <p>
+     * The JVM does not inspect the appendix, other than to pass
+     * it verbatim to the linker method at every call.
+     * This means that the JDK runtime has wide latitude
+     * for choosing the shape of each linker method and its
+     * corresponding appendix.
+     * Linker methods should be generated from {@code LambdaForm}s
+     * so that they do not become visible on stack traces.
+     * <p>
+     * The {@code linkMethod} call is free to omit the appendix
+     * (returning null) and instead emulate the required function
+     * completely in the linker method.
+     * As a corner case, if N==255, no appendix is possible.
+     * In this case, the method returned must be custom-generated to
+     * to perform any needed type checking.
+     * <p>
+     * If the JVM does not reify a method at a call site, but instead
+     * calls {@code linkMethod}, the corresponding call represented
+     * in the bytecodes may mention a valid method which is not
+     * representable with a {@code MemberName}.
+     * Therefore, use cases for {@code linkMethod} tend to correspond to
+     * special cases in reflective code such as {@code findVirtual}
+     * or {@code revealDirect}.
      */
     static MemberName linkMethod(Class<?> callerClass, int refKind,
                                  Class<?> defc, String name, Object type,

src/share/classes/java/lang/invoke/MethodHandles.java

@@ -26,8 +26,6 @@
 package java.lang.invoke;
 
 import java.lang.reflect.*;
-import java.security.AccessController;
-import java.security.PrivilegedAction;
 import java.util.List;
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -54,6 +52,7 @@ import sun.security.util.SecurityConstants;
  * </ul>
  * <p>
  * @author John Rose, JSR 292 EG
+ * @since 1.7
  */
 public class MethodHandles {
 
@@ -96,6 +95,38 @@ public class MethodHandles {
         return Lookup.PUBLIC_LOOKUP;
     }
 
+    /**
+     * Performs an unchecked "crack" of a direct method handle.
+     * The result is as if the user had obtained a lookup object capable enough
+     * to crack the target method handle, called
+     * {@link java.lang.invoke.MethodHandles.Lookup#revealDirect Lookup.revealDirect}
+     * on the target to obtain its symbolic reference, and then called
+     * {@link java.lang.invoke.MethodHandleInfo#reflectAs MethodHandleInfo.reflectAs}
+     * to resolve the symbolic reference to a member.
+     * <p>
+     * If there is a security manager, its {@code checkPermission} method
+     * is called with a {@code ReflectPermission("suppressAccessChecks")} permission.
+     * @param <T> the desired type of the result, either {@link Member} or a subtype
+     * @param target a direct method handle to crack into symbolic reference components
+     * @param expected a class object representing the desired result type {@code T}
+     * @return a reference to the method, constructor, or field object
+     * @exception SecurityException if the caller is not privileged to call {@code setAccessible}
+     * @exception NullPointerException if either argument is {@code null}
+     * @exception IllegalArgumentException if the target is not a direct method handle
+     * @exception ClassCastException if the member is not of the expected type
+     * @since 1.8
+     */
+    public static <T extends Member> T
+    reflectAs(Class<T> expected, MethodHandle target) {
+        SecurityManager smgr = System.getSecurityManager();
+        if (smgr != null)  smgr.checkPermission(ACCESS_PERMISSION);
+        Lookup lookup = Lookup.IMPL_LOOKUP;  // use maximally privileged lookup
+        return lookup.revealDirect(target).reflectAs(expected, lookup);
+    }
+    // Copied from AccessibleObject, as used by Method.setAccessible, etc.:
+    static final private java.security.Permission ACCESS_PERMISSION =
+        new ReflectPermission("suppressAccessChecks");
+
     /**
      * A <em>lookup object</em> is a factory for creating method handles,
      * when the creation requires access checking.
@@ -647,6 +678,7 @@ public class MethodHandles {
                 return invoker(type);
             if ("invokeExact".equals(name))
                 return exactInvoker(type);
+            assert(!MemberName.isMethodHandleInvokeName(name));
             return null;
         }
 
@@ -892,6 +924,10 @@ return mh1;
          * @throws NullPointerException if the argument is null
          */
         public MethodHandle unreflect(Method m) throws IllegalAccessException {
+            if (m.getDeclaringClass() == MethodHandle.class) {
+                MethodHandle mh = unreflectForMH(m);
+                if (mh != null)  return mh;
+            }
             MemberName method = new MemberName(m);
             byte refKind = method.getReferenceKind();
             if (refKind == REF_invokeSpecial)
@@ -900,6 +936,12 @@ return mh1;
             Lookup lookup = m.isAccessible() ? IMPL_LOOKUP : this;
             return lookup.getDirectMethod(refKind, method.getDeclaringClass(), method, findBoundCallerClass(method));
         }
+        private MethodHandle unreflectForMH(Method m) {
+            // these names require special lookups because they throw UnsupportedOperationException
+            if (MemberName.isMethodHandleInvokeName(m.getName()))
+                return MethodHandleImpl.fakeMethodHandleInvoke(new MemberName(m));
+            return null;
+        }
 
         /**
          * Produces a method handle for a reflected method.
@@ -1004,6 +1046,46 @@ return mh1;
             return unreflectField(f, true);
         }
 
+        /**
+         * Cracks a direct method handle created by this lookup object or a similar one.
+         * Security and access checks are performed to ensure that this lookup object
+         * is capable of reproducing the target method handle.
+         * This means that the cracking may fail if target is a direct method handle
+         * but was created by an unrelated lookup object.
+         * @param target a direct method handle to crack into symbolic reference components
+         * @return a symbolic reference which can be used to reconstruct this method handle from this lookup object
+         * @exception SecurityException if a security manager is present and it
+         *                              <a href="MethodHandles.Lookup.html#secmgr">refuses access</a>
+         * @throws IllegalArgumentException if the target is not a direct method handle or if access checking fails
+         * @exception NullPointerException if the target is {@code null}
+         * @since 1.8
+         */
+        public MethodHandleInfo revealDirect(MethodHandle target) {
+            MemberName member = target.internalMemberName();
+            if (member == null || (!member.isResolved() && !member.isMethodHandleInvoke()))
+                throw newIllegalArgumentException("not a direct method handle");
+            Class<?> defc = member.getDeclaringClass();
+            byte refKind = member.getReferenceKind();
+            assert(MethodHandleNatives.refKindIsValid(refKind));
+            if (refKind == REF_invokeSpecial && !target.isInvokeSpecial())
+                // Devirtualized method invocation is usually formally virtual.
+                // To avoid creating extra MemberName objects for this common case,
+                // we encode this extra degree of freedom using MH.isInvokeSpecial.
+                refKind = REF_invokeVirtual;
+            if (refKind == REF_invokeVirtual && defc.isInterface())
+                // Symbolic reference is through interface but resolves to Object method (toString, etc.)
+                refKind = REF_invokeInterface;
+            // Check SM permissions and member access before cracking.
+            try {
+                checkSecurityManager(defc, member);
+                checkAccess(refKind, defc, member);
+            } catch (IllegalAccessException ex) {
+                throw new IllegalArgumentException(ex);
+            }
+            // Produce the handle to the results.
+            return new InfoFromMemberName(this, member, refKind);
+        }
+
         /// Helper methods, all package-private.
 
         MemberName resolveOrFail(byte refKind, Class<?> refc, String name, Class<?> type) throws NoSuchFieldException, IllegalAccessException {
@@ -1201,12 +1283,12 @@ return mh1;
         private MethodHandle getDirectMethodCommon(byte refKind, Class<?> refc, MemberName method,
                                                    boolean doRestrict, Class<?> callerClass) throws IllegalAccessException {
             checkMethod(refKind, refc, method);
-            if (method.isMethodHandleInvoke())
-                return fakeMethodHandleInvoke(method);
+            assert(!method.isMethodHandleInvoke());
 
             Class<?> refcAsSuper;
             if (refKind == REF_invokeSpecial &&
                 refc != lookupClass() &&
+                !refc.isInterface() &&
                 refc != (refcAsSuper = lookupClass().getSuperclass()) &&
                 refc.isAssignableFrom(lookupClass())) {
                 assert(!method.getName().equals("<init>"));  // not this code path
@@ -1234,9 +1316,6 @@ return mh1;
                 mh = restrictReceiver(method, mh, lookupClass());
             return mh;
         }
-        private MethodHandle fakeMethodHandleInvoke(MemberName method) {
-            return throwException(method.getReturnType(), UnsupportedOperationException.class);
-        }
         private MethodHandle maybeBindCaller(MemberName method, MethodHandle mh,
                                              Class<?> callerClass)
                                              throws IllegalAccessException {

src/share/classes/java/lang/invoke/SerializedLambda.java

@@ -225,7 +225,7 @@ public final class SerializedLambda implements Serializable {
 
     @Override
     public String toString() {
-        String implKind=MethodHandleInfo.getReferenceKindString(implMethodKind);
+        String implKind=MethodHandleInfo.referenceKindToString(implMethodKind);
         return String.format("SerializedLambda[%s=%s, %s=%s.%s:%s, " +
                              "%s=%s %s.%s:%s, %s=%s, %s=%d]",
                              "capturingClass", capturingClass,

src/share/classes/java/net/IDN.java

@@ -292,13 +292,17 @@ public final class IDN {
         if (useSTD3ASCIIRules) {
             for (int i = 0; i < dest.length(); i++) {
                 int c = dest.charAt(i);
-                if (!isLDHChar(c)) {
-                    throw new IllegalArgumentException("Contains non-LDH characters");
+                if (isNonLDHAsciiCodePoint(c)) {
+                    throw new IllegalArgumentException(
+                        "Contains non-LDH ASCII characters");
                 }
             }
 
-            if (dest.charAt(0) == '-' || dest.charAt(dest.length() - 1) == '-') {
-                throw new IllegalArgumentException("Has leading or trailing hyphen");
+            if (dest.charAt(0) == '-' ||
+                dest.charAt(dest.length() - 1) == '-') {
+
+                throw new IllegalArgumentException(
+                        "Has leading or trailing hyphen");
             }
         }
 
@@ -401,26 +405,20 @@ public final class IDN {
     //
     // LDH stands for "letter/digit/hyphen", with characters restricted to the
     // 26-letter Latin alphabet <A-Z a-z>, the digits <0-9>, and the hyphen
-    // <->
-    // non-LDH = 0..0x2C, 0x2E..0x2F, 0x3A..0x40, 0x56..0x60, 0x7B..0x7F
+    // <->.
+    // Non LDH refers to characters in the ASCII range, but which are not
+    // letters, digits or the hypen.
     //
-    private static boolean isLDHChar(int ch){
-        // high runner case
-        if(ch > 0x007A){
-            return false;
-        }
-        //['-' '0'..'9' 'A'..'Z' 'a'..'z']
-        if((ch == 0x002D) ||
-           (0x0030 <= ch && ch <= 0x0039) ||
-           (0x0041 <= ch && ch <= 0x005A) ||
-           (0x0061 <= ch && ch <= 0x007A)
-          ){
-            return true;
-        }
-        return false;
+    // non-LDH = 0..0x2C, 0x2E..0x2F, 0x3A..0x40, 0x5B..0x60, 0x7B..0x7F
+    //
+    private static boolean isNonLDHAsciiCodePoint(int ch){
+        return (0x0000 <= ch && ch <= 0x002C) ||
+               (0x002E <= ch && ch <= 0x002F) ||
+               (0x003A <= ch && ch <= 0x0040) ||
+               (0x005B <= ch && ch <= 0x0060) ||
+               (0x007B <= ch && ch <= 0x007F);
     }
 
-
     //
     // search dots in a string and return the index of that character;
     // or if there is no dots, return the length of input string

src/share/classes/java/nio/file/Files.java

@@ -25,34 +25,56 @@
 
 package java.nio.file;
 
-import java.nio.file.attribute.*;
-import java.nio.file.spi.FileSystemProvider;
-import java.nio.file.spi.FileTypeDetector;
-import java.nio.channels.Channels;
-import java.nio.channels.FileChannel;
-import java.nio.channels.SeekableByteChannel;
-import java.io.Closeable;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.io.Reader;
-import java.io.Writer;
 import java.io.BufferedReader;
 import java.io.BufferedWriter;
+import java.io.Closeable;
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
 import java.io.InputStreamReader;
+import java.io.OutputStream;
 import java.io.OutputStreamWriter;
-import java.io.IOException;
+import java.io.Reader;
 import java.io.UncheckedIOException;
-import java.util.*;
-import java.util.function.BiPredicate;
-import java.util.stream.CloseableStream;
-import java.util.stream.DelegatingStream;
-import java.util.stream.Stream;
-import java.util.stream.StreamSupport;
-import java.security.AccessController;
-import java.security.PrivilegedAction;
+import java.io.Writer;
+import java.nio.channels.Channels;
+import java.nio.channels.FileChannel;
+import java.nio.channels.SeekableByteChannel;
 import java.nio.charset.Charset;
 import java.nio.charset.CharsetDecoder;
 import java.nio.charset.CharsetEncoder;
+import java.nio.file.attribute.BasicFileAttributeView;
+import java.nio.file.attribute.BasicFileAttributes;
+import java.nio.file.attribute.DosFileAttributes;
+import java.nio.file.attribute.FileAttribute;
+import java.nio.file.attribute.FileAttributeView;
+import java.nio.file.attribute.FileOwnerAttributeView;
+import java.nio.file.attribute.FileStoreAttributeView;
+import java.nio.file.attribute.FileTime;
+import java.nio.file.attribute.PosixFileAttributeView;
+import java.nio.file.attribute.PosixFileAttributes;
+import java.nio.file.attribute.PosixFilePermission;
+import java.nio.file.attribute.UserPrincipal;
+import java.nio.file.spi.FileSystemProvider;
+import java.nio.file.spi.FileTypeDetector;
+import java.security.AccessController;
+import java.security.PrivilegedAction;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.EnumSet;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+import java.util.ServiceLoader;
+import java.util.Set;
+import java.util.Spliterator;
+import java.util.Spliterators;
+import java.util.function.BiPredicate;
+import java.util.stream.Stream;
+import java.util.stream.StreamSupport;
 
 /**
  * This class consists exclusively of static methods that operate on files,
@@ -74,6 +96,21 @@ public final class Files {
         return path.getFileSystem().provider();
     }
 
+    /**
+     * Convert a Closeable to a Runnable by converting checked IOException
+     * to UncheckedIOException
+     */
+    private static Runnable asUncheckedRunnable(Closeable c) {
+        return () -> {
+            try {
+                c.close();
+            }
+            catch (IOException e) {
+                throw new UncheckedIOException(e);
+            }
+        };
+    }
+
     // -- File contents --
 
     /**
@@ -3228,29 +3265,7 @@ public final class Files {
     // -- Stream APIs --
 
     /**
-     * Implementation of CloseableStream
-     */
-    private static class DelegatingCloseableStream<T> extends DelegatingStream<T>
-        implements CloseableStream<T>
-    {
-        private final Closeable closeable;
-
-        DelegatingCloseableStream(Closeable c, Stream<T> delegate) {
-            super(delegate);
-            this.closeable = c;
-        }
-
-        public void close() {
-            try {
-                closeable.close();
-            } catch (IOException ex) {
-                throw new UncheckedIOException(ex);
-            }
-        }
-    }
-
-    /**
-     * Return a lazily populated {@code CloseableStream}, the elements of
+     * Return a lazily populated {@code Stream}, the elements of
      * which are the entries in the directory.  The listing is not recursive.
      *
      * <p> The elements of the stream are {@link Path} objects that are
@@ -3264,10 +3279,13 @@ public final class Files {
      * reflect updates to the directory that occur after returning from this
      * method.
      *
-     * <p> When not using the try-with-resources construct, then the stream's
-     * {@link CloseableStream#close close} method should be invoked after the
-     * operation is completed so as to free any resources held for the open
-     * directory. Operating on a closed stream behaves as if the end of stream
+     * <p> The returned stream encapsulates a {@link DirectoryStream}.
+     * If timely disposal of file system resources is required, the
+     * {@code try}-with-resources construct should be used to ensure that the
+     * stream's {@link Stream#close close} method is invoked after the stream
+     * operations are completed.
+     *
+     * <p> Operating on a closed stream behaves as if the end of stream
      * has been reached. Due to read-ahead, one or more elements may be
      * returned after the stream has been closed.
      *
@@ -3278,7 +3296,7 @@ public final class Files {
      *
      * @param   dir  The path to the directory
      *
-     * @return  The {@code CloseableStream} describing the content of the
+     * @return  The {@code Stream} describing the content of the
      *          directory
      *
      * @throws  NotDirectoryException
@@ -3294,43 +3312,54 @@ public final class Files {
      * @see     #newDirectoryStream(Path)
      * @since   1.8
      */
-    public static CloseableStream<Path> list(Path dir) throws IOException {
+    public static Stream<Path> list(Path dir) throws IOException {
         DirectoryStream<Path> ds = Files.newDirectoryStream(dir);
-        final Iterator<Path> delegate = ds.iterator();
-
-        // Re-wrap DirectoryIteratorException to UncheckedIOException
-        Iterator<Path> it = new Iterator<Path>() {
-            public boolean hasNext() {
-                try {
-                    return delegate.hasNext();
-                } catch (DirectoryIteratorException e) {
-                    throw new UncheckedIOException(e.getCause());
+        try {
+            final Iterator<Path> delegate = ds.iterator();
+
+            // Re-wrap DirectoryIteratorException to UncheckedIOException
+            Iterator<Path> it = new Iterator<Path>() {
+                @Override
+                public boolean hasNext() {
+                    try {
+                        return delegate.hasNext();
+                    } catch (DirectoryIteratorException e) {
+                        throw new UncheckedIOException(e.getCause());
+                    }
                 }
-            }
-            public Path next() {
-                try {
-                    return delegate.next();
-                } catch (DirectoryIteratorException e) {
-                    throw new UncheckedIOException(e.getCause());
+                @Override
+                public Path next() {
+                    try {
+                        return delegate.next();
+                    } catch (DirectoryIteratorException e) {
+                        throw new UncheckedIOException(e.getCause());
+                    }
                 }
-            }
-        };
+            };
 
-        Stream<Path> s = StreamSupport.stream(
-                Spliterators.spliteratorUnknownSize(it, Spliterator.DISTINCT),
-                false);
-        return new DelegatingCloseableStream<>(ds, s);
+            return StreamSupport.stream(Spliterators.spliteratorUnknownSize(it, Spliterator.DISTINCT), false)
+                                .onClose(asUncheckedRunnable(ds));
+        } catch (Error|RuntimeException e) {
+            try {
+                ds.close();
+            } catch (IOException ex) {
+                try {
+                    e.addSuppressed(ex);
+                } catch (Throwable ignore) {}
+            }
+            throw e;
+        }
     }
 
     /**
-     * Return a {@code CloseableStream} that is lazily populated with {@code
+     * Return a {@code Stream} that is lazily populated with {@code
      * Path} by walking the file tree rooted at a given starting file.  The
      * file tree is traversed <em>depth-first</em>, the elements in the stream
      * are {@link Path} objects that are obtained as if by {@link
      * Path#resolve(Path) resolving} the relative path against {@code start}.
      *
      * <p> The {@code stream} walks the file tree as elements are consumed.
-     * The {@code CloseableStream} returned is guaranteed to have at least one
+     * The {@code Stream} returned is guaranteed to have at least one
      * element, the starting file itself. For each file visited, the stream
      * attempts to read its {@link BasicFileAttributes}. If the file is a
      * directory and can be opened successfully, entries in the directory, and
@@ -3370,10 +3399,11 @@ public final class Files {
      * <p> When a security manager is installed and it denies access to a file
      * (or directory), then it is ignored and not included in the stream.
      *
-     * <p> When not using the try-with-resources construct, then the stream's
-     * {@link CloseableStream#close close} method should be invoked after the
-     * operation is completed so as to free any resources held for the open
-     * directory. Operate the stream after it is closed will throw an
+     * <p> The returned stream encapsulates one or more {@link DirectoryStream}s.
+     * If timely disposal of file system resources is required, the
+     * {@code try}-with-resources construct should be used to ensure that the
+     * stream's {@link Stream#close close} method is invoked after the stream
+     * operations are completed.  Operating on a closed stream will result in an
      * {@link java.lang.IllegalStateException}.
      *
      * <p> If an {@link IOException} is thrown when accessing the directory
@@ -3388,7 +3418,7 @@ public final class Files {
      * @param   options
      *          options to configure the traversal
      *
-     * @return  the {@link CloseableStream} of {@link Path}
+     * @return  the {@link Stream} of {@link Path}
      *
      * @throws  IllegalArgumentException
      *          if the {@code maxDepth} parameter is negative
@@ -3401,21 +3431,22 @@ public final class Files {
      *          if an I/O error is thrown when accessing the starting file.
      * @since   1.8
      */
-    public static CloseableStream<Path> walk(Path start, int maxDepth,
-                                             FileVisitOption... options)
-        throws IOException
-    {
+    public static Stream<Path> walk(Path start, int maxDepth,
+                                    FileVisitOption... options)
+            throws IOException {
         FileTreeIterator iterator = new FileTreeIterator(start, maxDepth, options);
-
-        Stream<Path> s = StreamSupport.stream(
-                Spliterators.spliteratorUnknownSize(iterator, Spliterator.DISTINCT),
-                false).
-                map(entry -> entry.file());
-        return new DelegatingCloseableStream<>(iterator, s);
+        try {
+            return StreamSupport.stream(Spliterators.spliteratorUnknownSize(iterator, Spliterator.DISTINCT), false)
+                                .onClose(iterator::close)
+                                .map(entry -> entry.file());
+        } catch (Error|RuntimeException e) {
+            iterator.close();
+            throw e;
+        }
     }
 
     /**
-     * Return a {@code CloseableStream} that is lazily populated with {@code
+     * Return a {@code Stream} that is lazily populated with {@code
      * Path} by walking the file tree rooted at a given starting file.  The
      * file tree is traversed <em>depth-first</em>, the elements in the stream
      * are {@link Path} objects that are obtained as if by {@link
@@ -3428,12 +3459,19 @@ public final class Files {
      * </pre></blockquote>
      * In other words, it visits all levels of the file tree.
      *
+     * <p> The returned stream encapsulates one or more {@link DirectoryStream}s.
+     * If timely disposal of file system resources is required, the
+     * {@code try}-with-resources construct should be used to ensure that the
+     * stream's {@link Stream#close close} method is invoked after the stream
+     * operations are completed.  Operating on a closed stream will result in an
+     * {@link java.lang.IllegalStateException}.
+     *
      * @param   start
      *          the starting file
      * @param   options
      *          options to configure the traversal
      *
-     * @return  the {@link CloseableStream} of {@link Path}
+     * @return  the {@link Stream} of {@link Path}
      *
      * @throws  SecurityException
      *          If the security manager denies access to the starting file.
@@ -3446,15 +3484,14 @@ public final class Files {
      * @see     #walk(Path, int, FileVisitOption...)
      * @since   1.8
      */
-    public static CloseableStream<Path> walk(Path start,
-                                             FileVisitOption... options)
-        throws IOException
-    {
+    public static Stream<Path> walk(Path start,
+                                    FileVisitOption... options)
+            throws IOException {
         return walk(start, Integer.MAX_VALUE, options);
     }
 
     /**
-     * Return a {@code CloseableStream} that is lazily populated with {@code
+     * Return a {@code Stream} that is lazily populated with {@code
      * Path} by searching for files in a file tree rooted at a given starting
      * file.
      *
@@ -3463,12 +3500,19 @@ public final class Files {
      * {@link BiPredicate} is invoked with its {@link Path} and {@link
      * BasicFileAttributes}. The {@code Path} object is obtained as if by
      * {@link Path#resolve(Path) resolving} the relative path against {@code
-     * start} and is only included in the returned {@link CloseableStream} if
+     * start} and is only included in the returned {@link Stream} if
      * the {@code BiPredicate} returns true. Compare to calling {@link
      * java.util.stream.Stream#filter filter} on the {@code Stream}
      * returned by {@code walk} method, this method may be more efficient by
      * avoiding redundant retrieval of the {@code BasicFileAttributes}.
      *
+     * <p> The returned stream encapsulates one or more {@link DirectoryStream}s.
+     * If timely disposal of file system resources is required, the
+     * {@code try}-with-resources construct should be used to ensure that the
+     * stream's {@link Stream#close close} method is invoked after the stream
+     * operations are completed.  Operating on a closed stream will result in an
+     * {@link java.lang.IllegalStateException}.
+     *
      * <p> If an {@link IOException} is thrown when accessing the directory
      * after returned from this method, it is wrapped in an {@link
      * UncheckedIOException} which will be thrown from the method that caused
@@ -3484,7 +3528,7 @@ public final class Files {
      * @param   options
      *          options to configure the traversal
      *
-     * @return  the {@link CloseableStream} of {@link Path}
+     * @return  the {@link Stream} of {@link Path}
      *
      * @throws  IllegalArgumentException
      *          if the {@code maxDepth} parameter is negative
@@ -3499,24 +3543,25 @@ public final class Files {
      * @see     #walk(Path, int, FileVisitOption...)
      * @since   1.8
      */
-    public static CloseableStream<Path> find(Path start,
-                                             int maxDepth,
-                                             BiPredicate<Path, BasicFileAttributes> matcher,
-                                             FileVisitOption... options)
-        throws IOException
-    {
+    public static Stream<Path> find(Path start,
+                                    int maxDepth,
+                                    BiPredicate<Path, BasicFileAttributes> matcher,
+                                    FileVisitOption... options)
+            throws IOException {
         FileTreeIterator iterator = new FileTreeIterator(start, maxDepth, options);
-
-        Stream<Path> s = StreamSupport.stream(
-                Spliterators.spliteratorUnknownSize(iterator, Spliterator.DISTINCT),
-                false).
-                filter(entry -> matcher.test(entry.file(), entry.attributes())).
-                map(entry -> entry.file());
-        return new DelegatingCloseableStream<>(iterator, s);
+        try {
+            return StreamSupport.stream(Spliterators.spliteratorUnknownSize(iterator, Spliterator.DISTINCT), false)
+                                .onClose(iterator::close)
+                                .filter(entry -> matcher.test(entry.file(), entry.attributes()))
+                                .map(entry -> entry.file());
+        } catch (Error|RuntimeException e) {
+            iterator.close();
+            throw e;
+        }
     }
 
     /**
-     * Read all lines from a file as a {@code CloseableStream}.  Unlike {@link
+     * Read all lines from a file as a {@code Stream}.  Unlike {@link
      * #readAllLines(Path, Charset) readAllLines}, this method does not read
      * all lines into a {@code List}, but instead populates lazily as the stream
      * is consumed.
@@ -3528,22 +3573,24 @@ public final class Files {
      * <p> After this method returns, then any subsequent I/O exception that
      * occurs while reading from the file or when a malformed or unmappable byte
      * sequence is read, is wrapped in an {@link UncheckedIOException} that will
-     * be thrown form the
+     * be thrown from the
      * {@link java.util.stream.Stream} method that caused the read to take
      * place. In case an {@code IOException} is thrown when closing the file,
      * it is also wrapped as an {@code UncheckedIOException}.
      *
-     * <p> When not using the try-with-resources construct, then stream's
-     * {@link CloseableStream#close close} method should be invoked after
-     * operation is completed so as to free any resources held for the open
-     * file.
+     * <p> The returned stream encapsulates a {@link Reader}.  If timely
+     * disposal of file system resources is required, the try-with-resources
+     * construct should be used to ensure that the stream's
+     * {@link Stream#close close} method is invoked after the stream operations
+     * are completed.
+     *
      *
      * @param   path
      *          the path to the file
      * @param   cs
      *          the charset to use for decoding
      *
-     * @return  the lines from the file as a {@code CloseableStream}
+     * @return  the lines from the file as a {@code Stream}
      *
      * @throws  IOException
      *          if an I/O error occurs opening the file
@@ -3557,10 +3604,19 @@ public final class Files {
      * @see     java.io.BufferedReader#lines()
      * @since   1.8
      */
-    public static CloseableStream<String> lines(Path path, Charset cs)
-        throws IOException
-    {
+    public static Stream<String> lines(Path path, Charset cs) throws IOException {
         BufferedReader br = Files.newBufferedReader(path, cs);
-        return new DelegatingCloseableStream<>(br, br.lines());
+        try {
+            return br.lines().onClose(asUncheckedRunnable(br));
+        } catch (Error|RuntimeException e) {
+            try {
+                br.close();
+            } catch (IOException ex) {
+                try {
+                    e.addSuppressed(ex);
+                } catch (Throwable ignore) {}
+            }
+            throw e;
+        }
     }
 }

src/share/classes/java/util/concurrent/atomic/AtomicLongArray.java

@@ -303,7 +303,7 @@ public class AtomicLongArray implements java.io.Serializable {
      * @return the previous value
      * @since 1.8
      */
-    public final long getAndAccumulate(int i, int x,
+    public final long getAndAccumulate(int i, long x,
                                       LongBinaryOperator accumulatorFunction) {
         long offset = checkedByteOffset(i);
         long prev, next;
@@ -329,7 +329,7 @@ public class AtomicLongArray implements java.io.Serializable {
      * @return the updated value
      * @since 1.8
      */
-    public final long accumulateAndGet(int i, int x,
+    public final long accumulateAndGet(int i, long x,
                                       LongBinaryOperator accumulatorFunction) {
         long offset = checkedByteOffset(i);
         long prev, next;

src/share/classes/java/util/logging/ConsoleHandler.java

@@ -26,9 +26,6 @@
 
 package java.util.logging;
 
-import java.io.*;
-import java.net.*;
-
 /**
  * This <tt>Handler</tt> publishes log records to <tt>System.err</tt>.
  * By default the <tt>SimpleFormatter</tt> is used to generate brief summaries.
@@ -114,6 +111,7 @@ public class ConsoleHandler extends StreamHandler {
      * @param  record  description of the log event. A null record is
      *                 silently ignored and is not published
      */
+    @Override
     public void publish(LogRecord record) {
         super.publish(record);
         flush();
@@ -124,6 +122,7 @@ public class ConsoleHandler extends StreamHandler {
      * to close the output stream.  That is, we do <b>not</b>
      * close <tt>System.err</tt>.
      */
+    @Override
     public void close() {
         flush();
     }

src/share/classes/java/util/logging/FileHandler.java

@@ -149,7 +149,7 @@ public class FileHandler extends StreamHandler {
     private FileChannel lockFileChannel;
     private File files[];
     private static final int MAX_LOCKS = 100;
-    private static java.util.HashMap<String, String> locks = new java.util.HashMap<>();
+    private static final java.util.HashMap<String, String> locks = new java.util.HashMap<>();
 
     /**
      * A metered stream is a subclass of OutputStream that
@@ -157,7 +157,7 @@ public class FileHandler extends StreamHandler {
      * (b) keeps track of how many bytes have been written
      */
     private class MeteredStream extends OutputStream {
-        OutputStream out;
+        final OutputStream out;
         int written;
 
         MeteredStream(OutputStream out, int written) {
@@ -165,25 +165,30 @@ public class FileHandler extends StreamHandler {
             this.written = written;
         }
 
+        @Override
         public void write(int b) throws IOException {
             out.write(b);
             written++;
         }
 
+        @Override
         public void write(byte buff[]) throws IOException {
             out.write(buff);
             written += buff.length;
         }
 
+        @Override
         public void write(byte buff[], int off, int len) throws IOException {
             out.write(buff,off,len);
             written += len;
         }
 
+        @Override
         public void flush() throws IOException {
             out.flush();
         }
 
+        @Override
         public void close() throws IOException {
             out.close();
         }
@@ -607,6 +612,7 @@ public class FileHandler extends StreamHandler {
      * @param  record  description of the log event. A null record is
      *                 silently ignored and is not published
      */
+    @Override
     public synchronized void publish(LogRecord record) {
         if (!isLoggable(record)) {
             return;
@@ -620,6 +626,7 @@ public class FileHandler extends StreamHandler {
             // currently being called from untrusted code.
             // So it is safe to raise privilege here.
             AccessController.doPrivileged(new PrivilegedAction<Object>() {
+                @Override
                 public Object run() {
                     rotate();
                     return null;
@@ -634,6 +641,7 @@ public class FileHandler extends StreamHandler {
      * @exception  SecurityException  if a security manager exists and if
      *             the caller does not have <tt>LoggingPermission("control")</tt>.
      */
+    @Override
     public synchronized void close() throws SecurityException {
         super.close();
         // Unlock any lock file.
@@ -656,6 +664,7 @@ public class FileHandler extends StreamHandler {
 
     private static class InitializationErrorManager extends ErrorManager {
         Exception lastException;
+        @Override
         public void error(String msg, Exception ex, int code) {
             lastException = ex;
         }

src/share/classes/java/util/logging/Handler.java

@@ -47,12 +47,20 @@ import java.io.UnsupportedEncodingException;
 
 public abstract class Handler {
     private static final int offValue = Level.OFF.intValue();
-    private LogManager manager = LogManager.getLogManager();
-    private Filter filter;
-    private Formatter formatter;
-    private Level logLevel = Level.ALL;
-    private ErrorManager errorManager = new ErrorManager();
-    private String encoding;
+    private final LogManager manager = LogManager.getLogManager();
+
+    // We're using volatile here to avoid synchronizing getters, which
+    // would prevent other threads from calling isLoggable()
+    // while publish() is executing.
+    // On the other hand, setters will be synchronized to exclude concurrent
+    // execution with more complex methods, such as StreamHandler.publish().
+    // We wouldn't want 'level' to be changed by another thread in the middle
+    // of the execution of a 'publish' call.
+    private volatile Filter filter;
+    private volatile Formatter formatter;
+    private volatile Level logLevel = Level.ALL;
+    private volatile ErrorManager errorManager = new ErrorManager();
+    private volatile String encoding;
 
     // Package private support for security checking.  When sealed
     // is true, we access check updates to the class.
@@ -110,7 +118,7 @@ public abstract class Handler {
      * @exception  SecurityException  if a security manager exists and if
      *             the caller does not have <tt>LoggingPermission("control")</tt>.
      */
-    public void setFormatter(Formatter newFormatter) throws SecurityException {
+    public synchronized void setFormatter(Formatter newFormatter) throws SecurityException {
         checkPermission();
         // Check for a null pointer:
         newFormatter.getClass();
@@ -138,7 +146,7 @@ public abstract class Handler {
      * @exception  UnsupportedEncodingException if the named encoding is
      *          not supported.
      */
-    public void setEncoding(String encoding)
+    public synchronized void setEncoding(String encoding)
                         throws SecurityException, java.io.UnsupportedEncodingException {
         checkPermission();
         if (encoding != null) {
@@ -174,7 +182,7 @@ public abstract class Handler {
      * @exception  SecurityException  if a security manager exists and if
      *             the caller does not have <tt>LoggingPermission("control")</tt>.
      */
-    public void setFilter(Filter newFilter) throws SecurityException {
+    public synchronized void setFilter(Filter newFilter) throws SecurityException {
         checkPermission();
         filter = newFilter;
     }
@@ -198,7 +206,7 @@ public abstract class Handler {
      * @exception  SecurityException  if a security manager exists and if
      *             the caller does not have <tt>LoggingPermission("control")</tt>.
      */
-    public void setErrorManager(ErrorManager em) {
+    public synchronized void setErrorManager(ErrorManager em) {
         checkPermission();
         if (em == null) {
            throw new NullPointerException();
@@ -264,7 +272,7 @@ public abstract class Handler {
      * than this level will be discarded.
      * @return  the level of messages being logged.
      */
-    public synchronized Level getLevel() {
+    public Level getLevel() {
         return logLevel;
     }
 
@@ -282,11 +290,11 @@ public abstract class Handler {
      *
      */
     public boolean isLoggable(LogRecord record) {
-        int levelValue = getLevel().intValue();
+        final int levelValue = getLevel().intValue();
         if (record.getLevel().intValue() < levelValue || levelValue == offValue) {
             return false;
         }
-        Filter filter = getFilter();
+        final Filter filter = getFilter();
         if (filter == null) {
             return true;
         }

src/share/classes/java/util/logging/Level.java

@@ -27,6 +27,7 @@ package java.util.logging;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 import java.util.ResourceBundle;
 
@@ -63,7 +64,7 @@ import java.util.ResourceBundle;
  */
 
 public class Level implements java.io.Serializable {
-    private static String defaultBundle = "sun.util.logging.resources.logging";
+    private static final String defaultBundle = "sun.util.logging.resources.logging";
 
     /**
      * @serial  The non-localized name of the level.
@@ -81,7 +82,8 @@ public class Level implements java.io.Serializable {
     private final String resourceBundleName;
 
     // localized level name
-    private String localizedLevelName;
+    private transient String localizedLevelName;
+    private transient Locale cachedLocale;
 
     /**
      * OFF is a special level that can be used to turn off logging.
@@ -209,6 +211,7 @@ public class Level implements java.io.Serializable {
         this.value = value;
         this.resourceBundleName = resourceBundleName;
         this.localizedLevelName = resourceBundleName == null ? name : null;
+        this.cachedLocale = null;
         KnownLevel.add(this);
     }
 
@@ -250,17 +253,71 @@ public class Level implements java.io.Serializable {
         return this.name;
     }
 
-    final synchronized String getLocalizedLevelName() {
+    private String computeLocalizedLevelName(Locale newLocale) {
+        ResourceBundle rb = ResourceBundle.getBundle(resourceBundleName, newLocale);
+        final String localizedName = rb.getString(name);
+
+        final boolean isDefaultBundle = defaultBundle.equals(resourceBundleName);
+        if (!isDefaultBundle) return localizedName;
+
+        // This is a trick to determine whether the name has been translated
+        // or not. If it has not been translated, we need to use Locale.ROOT
+        // when calling toUpperCase().
+        final Locale rbLocale = rb.getLocale();
+        final Locale locale =
+                Locale.ROOT.equals(rbLocale)
+                || name.equals(localizedName.toUpperCase(Locale.ROOT))
+                ? Locale.ROOT : rbLocale;
+
+        // ALL CAPS in a resource bundle's message indicates no translation
+        // needed per Oracle translation guideline.  To workaround this
+        // in Oracle JDK implementation, convert the localized level name
+        // to uppercase for compatibility reason.
+        return Locale.ROOT.equals(locale) ? name : localizedName.toUpperCase(locale);
+    }
+
+    // Avoid looking up the localizedLevelName twice if we already
+    // have it.
+    final String getCachedLocalizedLevelName() {
+
         if (localizedLevelName != null) {
-            return localizedLevelName;
+            if (cachedLocale != null) {
+                if (cachedLocale.equals(Locale.getDefault())) {
+                    // OK: our cached value was looked up with the same
+                    //     locale. We can use it.
+                    return localizedLevelName;
+                }
+            }
+        }
+
+        if (resourceBundleName == null) {
+            // No resource bundle: just use the name.
+            return name;
+        }
+
+        // We need to compute the localized name.
+        // Either because it's the first time, or because our cached
+        // value is for a different locale. Just return null.
+        return null;
+    }
+
+    final synchronized String getLocalizedLevelName() {
+
+        // See if we have a cached localized name
+        final String cachedLocalizedName = getCachedLocalizedLevelName();
+        if (cachedLocalizedName != null) {
+            return cachedLocalizedName;
         }
 
+        // No cached localized name or cache invalid.
+        // Need to compute the localized name.
+        final Locale newLocale = Locale.getDefault();
         try {
-            ResourceBundle rb = ResourceBundle.getBundle(resourceBundleName);
-            localizedLevelName = rb.getString(name);
+            localizedLevelName = computeLocalizedLevelName(newLocale);
         } catch (Exception ex) {
             localizedLevelName = name;
         }
+        cachedLocale = newLocale;
         return localizedLevelName;
     }
 
@@ -318,6 +375,7 @@ public class Level implements java.io.Serializable {
      *
      * @return the non-localized name of the Level, for example "INFO".
      */
+    @Override
     public final String toString() {
         return name;
     }
@@ -420,6 +478,7 @@ public class Level implements java.io.Serializable {
      * Compare two objects for value equality.
      * @return true if and only if the two objects have the same level value.
      */
+    @Override
     public boolean equals(Object ox) {
         try {
             Level lx = (Level)ox;
@@ -433,6 +492,7 @@ public class Level implements java.io.Serializable {
      * Generate a hashcode.
      * @return a hashcode based on the level value
      */
+    @Override
     public int hashCode() {
         return this.value;
     }

src/share/classes/java/util/logging/LogManager.java

@@ -391,6 +391,9 @@ public class LogManager {
         }
     }
 
+    // LoggerContext maps from AppContext
+    private static WeakHashMap<Object, LoggerContext> contextsMap = null;
+
     // Returns the LoggerContext for the user code (i.e. application or AppContext).
     // Loggers are isolated from each AppContext.
     private LoggerContext getUserContext() {
@@ -399,33 +402,28 @@ public class LogManager {
         SecurityManager sm = System.getSecurityManager();
         JavaAWTAccess javaAwtAccess = SharedSecrets.getJavaAWTAccess();
         if (sm != null && javaAwtAccess != null) {
+            // for each applet, it has its own LoggerContext isolated from others
             synchronized (javaAwtAccess) {
-                // AppContext.getAppContext() returns the system AppContext if called
-                // from a system thread but Logger.getLogger might be called from
-                // an applet code. Instead, find the AppContext of the applet code
-                // from the execution stack.
-                Object ecx = javaAwtAccess.getExecutionContext();
-                if (ecx == null) {
-                    // fall back to thread group seach of AppContext
-                    ecx = javaAwtAccess.getContext();
-                }
+                // find the AppContext of the applet code
+                // will be null if we are in the main app context.
+                final Object ecx = javaAwtAccess.getAppletContext();
                 if (ecx != null) {
-                    context = (LoggerContext)javaAwtAccess.get(ecx, LoggerContext.class);
+                    if (contextsMap == null) {
+                        contextsMap = new WeakHashMap<>();
+                    }
+                    context = contextsMap.get(ecx);
                     if (context == null) {
-                        if (javaAwtAccess.isMainAppContext()) {
-                            context = userContext;
-                        } else {
-                            // Create a new LoggerContext for the applet.
-                            // The new logger context has its requiresDefaultLoggers
-                            // flag set to true - so that these loggers will be
-                            // lazily added when the context is firt accessed.
-                            context = new LoggerContext(true);
-                        }
-                        javaAwtAccess.put(ecx, LoggerContext.class, context);
+                        // Create a new LoggerContext for the applet.
+                        // The new logger context has its requiresDefaultLoggers
+                        // flag set to true - so that these loggers will be
+                        // lazily added when the context is firt accessed.
+                        context = new LoggerContext(true);
+                        contextsMap.put(ecx, context);
                     }
                 }
             }
         }
+        // for standalone app, return userContext
         return context != null ? context : userContext;
     }
 

src/share/classes/java/util/logging/MemoryHandler.java

@@ -88,7 +88,7 @@ package java.util.logging;
 
 public class MemoryHandler extends Handler {
     private final static int DEFAULT_SIZE = 1000;
-    private Level pushLevel;
+    private volatile Level pushLevel;
     private int size;
     private Handler target;
     private LogRecord buffer[];
@@ -188,6 +188,7 @@ public class MemoryHandler extends Handler {
      * @param  record  description of the log event. A null record is
      *                 silently ignored and is not published
      */
+    @Override
     public synchronized void publish(LogRecord record) {
         if (!isLoggable(record)) {
             return;
@@ -227,6 +228,7 @@ public class MemoryHandler extends Handler {
      * Note that the current contents of the <tt>MemoryHandler</tt>
      * buffer are <b>not</b> written out.  That requires a "push".
      */
+    @Override
     public void flush() {
         target.flush();
     }
@@ -238,6 +240,7 @@ public class MemoryHandler extends Handler {
      * @exception  SecurityException  if a security manager exists and if
      *             the caller does not have <tt>LoggingPermission("control")</tt>.
      */
+    @Override
     public void close() throws SecurityException {
         target.close();
         setLevel(Level.OFF);
@@ -252,11 +255,10 @@ public class MemoryHandler extends Handler {
      * @exception  SecurityException  if a security manager exists and if
      *             the caller does not have <tt>LoggingPermission("control")</tt>.
      */
-    public void setPushLevel(Level newLevel) throws SecurityException {
+    public synchronized void setPushLevel(Level newLevel) throws SecurityException {
         if (newLevel == null) {
             throw new NullPointerException();
         }
-        LogManager manager = LogManager.getLogManager();
         checkPermission();
         pushLevel = newLevel;
     }
@@ -266,7 +268,7 @@ public class MemoryHandler extends Handler {
      *
      * @return the value of the <tt>pushLevel</tt>
      */
-    public synchronized Level getPushLevel() {
+    public Level getPushLevel() {
         return pushLevel;
     }
 
@@ -283,6 +285,7 @@ public class MemoryHandler extends Handler {
      * @return true if the <tt>LogRecord</tt> would be logged.
      *
      */
+    @Override
     public boolean isLoggable(LogRecord record) {
         return super.isLoggable(record);
     }

src/share/classes/java/util/logging/SocketHandler.java

@@ -82,7 +82,6 @@ public class SocketHandler extends StreamHandler {
     private Socket sock;
     private String host;
     private int port;
-    private String portProperty;
 
     // Private method to configure a SocketHandler from LogManager
     // properties and/or default values as specified in the class
@@ -177,6 +176,7 @@ public class SocketHandler extends StreamHandler {
      * @exception  SecurityException  if a security manager exists and if
      *             the caller does not have <tt>LoggingPermission("control")</tt>.
      */
+    @Override
     public synchronized void close() throws SecurityException {
         super.close();
         if (sock != null) {
@@ -195,6 +195,7 @@ public class SocketHandler extends StreamHandler {
      * @param  record  description of the log event. A null record is
      *                 silently ignored and is not published
      */
+    @Override
     public synchronized void publish(LogRecord record) {
         if (!isLoggable(record)) {
             return;

src/share/classes/java/util/logging/StreamHandler.java

@@ -73,10 +73,9 @@ import java.io.*;
  */
 
 public class StreamHandler extends Handler {
-    private LogManager manager = LogManager.getLogManager();
     private OutputStream output;
     private boolean doneHeader;
-    private Writer writer;
+    private volatile Writer writer;
 
     // Private method to configure a StreamHandler from LogManager
     // properties and/or default values as specified in the class
@@ -169,7 +168,8 @@ public class StreamHandler extends Handler {
      * @exception  UnsupportedEncodingException if the named encoding is
      *          not supported.
      */
-    public void setEncoding(String encoding)
+    @Override
+    public synchronized void setEncoding(String encoding)
                         throws SecurityException, java.io.UnsupportedEncodingException {
         super.setEncoding(encoding);
         if (output == null) {
@@ -201,6 +201,7 @@ public class StreamHandler extends Handler {
      * @param  record  description of the log event. A null record is
      *                 silently ignored and is not published
      */
+    @Override
     public synchronized void publish(LogRecord record) {
         if (!isLoggable(record)) {
             return;
@@ -240,6 +241,7 @@ public class StreamHandler extends Handler {
      * @return true if the <tt>LogRecord</tt> would be logged.
      *
      */
+    @Override
     public boolean isLoggable(LogRecord record) {
         if (writer == null || record == null) {
             return false;
@@ -250,6 +252,7 @@ public class StreamHandler extends Handler {
     /**
      * Flush any buffered messages.
      */
+    @Override
     public synchronized void flush() {
         if (writer != null) {
             try {
@@ -294,6 +297,7 @@ public class StreamHandler extends Handler {
      * @exception  SecurityException  if a security manager exists and if
      *             the caller does not have LoggingPermission("control").
      */
+    @Override
     public synchronized void close() throws SecurityException {
         flushAndClose();
     }