Merge

jdk/src/share/classes/com/sun/beans/TypeResolver.java

@@ -154,7 +154,7 @@ public final class TypeResolver {
      * @see #resolve(Type)
      */
     public static Type resolve(Type actual, Type formal) {
-        return new TypeResolver(actual).resolve(formal);
+        return getTypeResolver(actual).resolve(formal);
     }
 
     /**
@@ -169,7 +169,7 @@ public final class TypeResolver {
      * @see #resolve(Type[])
      */
     public static Type[] resolve(Type actual, Type[] formals) {
-        return new TypeResolver(actual).resolve(formals);
+        return getTypeResolver(actual).resolve(formals);
     }
 
     /**
@@ -228,9 +228,20 @@ public final class TypeResolver {
         return classes;
     }
 
+    public static TypeResolver getTypeResolver(Type type) {
+        synchronized (CACHE) {
+            TypeResolver resolver = CACHE.get(type);
+            if (resolver == null) {
+                resolver = new TypeResolver(type);
+                CACHE.put(type, resolver);
+            }
+            return resolver;
+        }
+    }
 
-    private final Map<TypeVariable<?>, Type> map
-        = new HashMap<TypeVariable<?>, Type>();
+    private static final WeakCache<Type, TypeResolver> CACHE = new WeakCache<>();
+
+    private final Map<TypeVariable<?>, Type> map = new HashMap<>();
 
     /**
      * Constructs the type resolver for the given actual type.

jdk/src/share/classes/java/awt/AWTKeyStroke.java

@@ -802,8 +802,11 @@ public class AWTKeyStroke implements Serializable {
      */
     protected Object readResolve() throws java.io.ObjectStreamException {
         synchronized (AWTKeyStroke.class) {
-            return getCachedStroke(keyChar, keyCode, modifiers, onKeyRelease);
+            if (getClass().equals(getAWTKeyStrokeClass())) {
+                return  getCachedStroke(keyChar, keyCode, modifiers, onKeyRelease);
+            }
         }
+        return this;
     }
 
     private static int mapOldModifiers(int modifiers) {

jdk/src/share/classes/javax/swing/plaf/basic/BasicTreeUI.java

@@ -1932,20 +1932,22 @@ public class BasicTreeUI extends TreeUI
             else {
                 Rectangle   beginRect = getPathBounds(tree, getPathForRow
                                                       (tree, beginRow));
-                Rectangle   visRect = tree.getVisibleRect();
-                Rectangle   testRect = beginRect;
-                int         beginY = beginRect.y;
-                int         maxY = beginY + visRect.height;
+                if (beginRect != null) {
+                    Rectangle   visRect = tree.getVisibleRect();
+                    Rectangle   testRect = beginRect;
+                    int         beginY = beginRect.y;
+                    int         maxY = beginY + visRect.height;
 
-                for(int counter = beginRow + 1; counter <= endRow; counter++) {
-                    testRect = getPathBounds(tree,
-                                             getPathForRow(tree, counter));
-                    if((testRect.y + testRect.height) > maxY)
-                        counter = endRow;
+                    for(int counter = beginRow + 1; counter <= endRow; counter++) {
+                            testRect = getPathBounds(tree,
+                                    getPathForRow(tree, counter));
+                        if((testRect.y + testRect.height) > maxY)
+                                counter = endRow;
+                            }
+                        tree.scrollRectToVisible(new Rectangle(visRect.x, beginY, 1,
+                                                      testRect.y + testRect.height-
+                                                      beginY));
                 }
-                tree.scrollRectToVisible(new Rectangle(visRect.x, beginY, 1,
-                                                  testRect.y + testRect.height-
-                                                  beginY));
             }
         }
     }
@@ -3485,7 +3487,7 @@ public class BasicTreeUI extends TreeUI
             }
 
             Rectangle bounds = getPathBounds(tree, path);
-            if (y > (bounds.y + bounds.height)) {
+            if (bounds == null || y > (bounds.y + bounds.height)) {
                 return false;
             }
 

jdk/src/solaris/classes/sun/awt/X11/GtkFileDialogPeer.java

@@ -76,9 +76,12 @@ class GtkFileDialogPeer extends XDialogPeer implements FileDialogPeer {
             accessor.setFiles(fd, null, null);
         } else {
             // Fix 6987233: add the trailing slash if it's absent
-            accessor.setDirectory(fd, directory +
-                    (directory.endsWith(File.separator) ?
-                     "" : File.separator));
+            String with_separator = directory;
+            if (directory != null) {
+                with_separator = directory.endsWith(File.separator) ?
+                        directory : (directory + File.separator);
+            }
+            accessor.setDirectory(fd, with_separator);
             accessor.setFile(fd, filenames[0]);
             accessor.setFiles(fd, directory, filenames);
         }

jdk/test/javax/swing/JSplitPane/4885629/bug4885629.java

@@ -0,0 +1,115 @@
+/*
+ * Copyright (c) 2011, 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.
+ *
+ * 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.
+ */
+
+/*
+ * @test
+ * @bug 4885629
+ * @summary With JSplitPane in VERTICAL_SPLIT, SplitPaneBorder draws bottom edge of divider
+ * @author Andrey Pikalev
+ */
+
+import sun.awt.SunToolkit;
+
+import javax.swing.*;
+import javax.swing.border.Border;
+import javax.swing.border.EmptyBorder;
+import javax.swing.plaf.basic.BasicBorders;
+import javax.swing.plaf.basic.BasicLookAndFeel;
+import javax.swing.plaf.basic.BasicSplitPaneUI;
+import java.awt.*;
+
+
+public class bug4885629 {
+
+    private static final Color darkShadow = new Color(100,120,200);
+    private static final Color darkHighlight = new Color(200,120,50);
+    private static final Color lightHighlight = darkHighlight.brighter();
+    private static final Color BGCOLOR = Color.blue;
+
+    private static JSplitPane sp;
+
+    public static void main(String[] args) throws Exception {
+        UIManager.setLookAndFeel(new BasicLookAndFeel() {
+                public boolean isSupportedLookAndFeel(){ return true; }
+                public boolean isNativeLookAndFeel(){ return false; }
+                public String getDescription() { return "Foo"; }
+                public String getID() { return "FooID"; }
+                public String getName() { return "FooName"; }
+        });
+
+        SwingUtilities.invokeAndWait(new Runnable() {
+            public void run() {
+                JFrame frame = new JFrame();
+
+                JComponent a = new JPanel();
+                a.setBackground(Color.white);
+                a.setMinimumSize(new Dimension(10, 10));
+
+                JComponent b = new JPanel();
+                b.setBackground(Color.white);
+                b.setMinimumSize(new Dimension(10, 10));
+
+                sp = new JSplitPane(JSplitPane.VERTICAL_SPLIT, a, b);
+                sp.setPreferredSize(new Dimension(20, 20));
+                sp.setBackground(BGCOLOR);
+
+                Border bo = new BasicBorders.SplitPaneBorder(lightHighlight,
+                        Color.red);
+                Border ibo = new EmptyBorder(0, 0, 0, 0);
+                sp.setBorder(bo);
+                sp.setMinimumSize(new Dimension(200, 200));
+
+                ((BasicSplitPaneUI) sp.getUI()).getDivider().setBorder(ibo);
+
+                frame.getContentPane().setLayout(new FlowLayout());
+                frame.getContentPane().setBackground(darkShadow);
+                frame.getContentPane().add(sp);
+
+                frame.setSize(200, 200);
+                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+                frame.setVisible(true);
+            }
+        });
+
+        ((SunToolkit) SunToolkit.getDefaultToolkit()).realSync();
+
+        final Robot robot = new Robot();
+        robot.delay(1000);
+
+        SwingUtilities.invokeAndWait(new Runnable() {
+            public void run() {
+                Rectangle rect = ((BasicSplitPaneUI) sp.getUI()).getDivider().getBounds();
+
+                Point p = rect.getLocation();
+
+                SwingUtilities.convertPointToScreen(p, sp);
+
+                for (int i = 0; i < rect.width; i++) {
+                    if (!BGCOLOR.equals(robot.getPixelColor(p.x + i, p.y + rect.height - 1))) {
+                        throw new Error("The divider's area has incorrect color.");
+                    }
+                }
+            }
+        });
+    }
+}

jdk/test/javax/swing/JTextArea/4697612/bug4697612.java

@@ -0,0 +1,208 @@
+/*
+ * Copyright (c) 2012, 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.
+ *
+ * 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.
+ */
+
+/*
+ * @test
+ * @bug 4697612 6244705
+ * @author Peter Zhelezniakov
+ * @library ../../regtesthelpers
+ * @build Util
+ * @run main bug4697612
+ */
+import java.io.*;
+import java.awt.*;
+import java.awt.event.*;
+import javax.swing.*;
+
+import javax.swing.text.BadLocationException;
+import sun.awt.SunToolkit;
+
+public class bug4697612 {
+
+    static final int FRAME_WIDTH = 300;
+    static final int FRAME_HEIGHT = 300;
+    static final int FONT_HEIGHT = 16;
+    private static volatile int frameHeight;
+    private static volatile int fontHeight;
+    private static JFrame frame;
+    private static JTextArea text;
+    private static JScrollPane scroller;
+
+    public static void main(String[] args) throws Throwable {
+        SunToolkit toolkit = (SunToolkit) Toolkit.getDefaultToolkit();
+        Robot robot = new Robot();
+        robot.setAutoDelay(100);
+
+        SwingUtilities.invokeAndWait(new Runnable() {
+
+            @Override
+            public void run() {
+                createAndShowGUI();
+            }
+        });
+
+        toolkit.realSync();
+
+        SwingUtilities.invokeAndWait(new Runnable() {
+
+            @Override
+            public void run() {
+                text.requestFocus();
+            }
+        });
+
+        toolkit.realSync();
+
+        // 4697612: pressing PgDn + PgUp should not alter caret position
+        Util.hitKeys(robot, KeyEvent.VK_HOME);
+        Util.hitKeys(robot, KeyEvent.VK_PAGE_DOWN);
+
+
+        int pos0 = getTextCaretPosition();
+        int caretHeight = getTextCaretHeight();
+        fontHeight = FONT_HEIGHT;
+
+        // iterate two times, for different (even and odd) font height
+        for (int i = 0; i < 2; i++) {
+
+            SwingUtilities.invokeAndWait(new Runnable() {
+
+                public void run() {
+                    text.setFont(text.getFont().deriveFont(fontHeight));
+                }
+            });
+
+            frameHeight = FRAME_HEIGHT;
+
+            for (int j = 0; j < caretHeight; j++) {
+                SwingUtilities.invokeAndWait(new Runnable() {
+
+                    public void run() {
+                        frame.setSize(FRAME_WIDTH, frameHeight);
+                    }
+                });
+
+                toolkit.realSync();
+
+                Util.hitKeys(robot, KeyEvent.VK_PAGE_DOWN);
+                Util.hitKeys(robot, KeyEvent.VK_PAGE_UP);
+                toolkit.realSync();
+
+                int pos = getTextCaretPosition();
+                if (pos0 != pos) {
+                    throw new RuntimeException("Failed 4697612: PgDn & PgUp keys scroll by different amounts");
+                }
+                frameHeight++;
+            }
+            fontHeight++;
+        }
+
+
+        // 6244705: pressing PgDn at the very bottom should not scroll
+        LookAndFeel laf = UIManager.getLookAndFeel();
+        if (laf.getID().equals("Aqua")) {
+            Util.hitKeys(robot, KeyEvent.VK_END);
+        } else {
+            Util.hitKeys(robot, KeyEvent.VK_CONTROL, KeyEvent.VK_END);
+        }
+
+        toolkit.realSync();
+
+        pos0 = getScrollerViewPosition();
+        Util.hitKeys(robot, KeyEvent.VK_PAGE_DOWN);
+        toolkit.realSync();
+
+        int pos = getScrollerViewPosition();
+
+        if (pos0 != pos) {
+            throw new RuntimeException("Failed 6244705: PgDn at the bottom causes scrolling");
+        }
+    }
+
+    private static int getTextCaretPosition() throws Exception {
+        final int[] result = new int[1];
+        SwingUtilities.invokeAndWait(new Runnable() {
+
+            @Override
+            public void run() {
+                result[0] = text.getCaretPosition();
+            }
+        });
+
+        return result[0];
+    }
+
+    private static int getTextCaretHeight() throws Exception {
+        final int[] result = new int[1];
+        SwingUtilities.invokeAndWait(new Runnable() {
+
+            @Override
+            public void run() {
+                try {
+                    int pos0 = text.getCaretPosition();
+                    Rectangle dotBounds = text.modelToView(pos0);
+                    result[0] = dotBounds.height;
+                } catch (BadLocationException ex) {
+                    throw new RuntimeException(ex);
+                }
+            }
+        });
+
+        return result[0];
+    }
+
+    private static int getScrollerViewPosition() throws Exception {
+        final int[] result = new int[1];
+        SwingUtilities.invokeAndWait(new Runnable() {
+
+            @Override
+            public void run() {
+                result[0] = scroller.getViewport().getViewPosition().y;
+            }
+        });
+
+        return result[0];
+    }
+
+    private static void createAndShowGUI() {
+        frame = new JFrame();
+        frame.setSize(FRAME_WIDTH, FRAME_HEIGHT);
+        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+
+        text = new JTextArea();
+        try {
+            InputStream is =
+                    bug4697612.class.getResourceAsStream("bug4697612.txt");
+            text.read(new InputStreamReader(is), null);
+        } catch (IOException e) {
+            throw new Error(e);
+        }
+
+        scroller = new JScrollPane(text);
+
+        frame.getContentPane().add(scroller);
+
+        frame.pack();
+        frame.setVisible(true);
+    }
+}

jdk/test/javax/swing/JTextArea/4697612/bug4697612.txt

@@ -0,0 +1,223 @@
+                                   README
+
+                      Java(TM) 2 SDK, Standard Edition
+                             Version 1.4.2 Beta
+
+     For a more extensive HTML version of this file, see README.html.
+
+Contents
+
+   * Introduction
+   * Release Notes
+   * Bug Reports and Feedback
+   * Java 2 SDK Documentation
+   * Redistribution
+   * Web Pages
+
+
+Introduction
+
+     Thank you for downloading this release of the Java(TM) 2 SDK,
+     Standard Edition. The Java 2 SDK is a development environment for
+     building applications, applets, and components that can be
+     deployed on the Java platform.
+
+     The Java 2 SDK software includes tools useful for developing and
+     testing programs written in the Java programming language and
+     running on the Java platform. These tools are designed to be used
+     from the command line. Except for appletviewer, these tools do not
+     provide a graphical user interface.
+
+
+Release Notes
+
+      See the Release Notes on the Java Software web site for additional 
+      information pertaining to this release. 
+ 
+      http://java.sun.com/j2se/1.4.2/relnotes.html
+
+      The on-line release notes will be updated as needed, so you should 
+      check it occasionally for the latest information. 
+
+
+Bug Reports and Feedback
+
+      The Bug Parade Web Page on the Java Developer Connection(SM) web 
+      site lets you search for and examine existing bug reports, submit 
+      your own bug reports, and tell us which bug fixes matter most to you. 
+
+      http://java.sun.com/jdc/bugParade/
+
+      To directly submit a bug or request a feature, fill out this form: 
+
+      http://java.sun.com/cgi-bin/bugreport.cgi 
+
+      You can also send comments directly to Java Software engineering 
+      team email addresses. 
+
+      http://java.sun.com/mail/
+
+
+Java 2 SDK Documentation
+
+     The on-line Java 2 SDK Documentation contains API specifications,
+     feature descriptions, developer guides, tool reference pages, demos, 
+     and links to related information. It is located at
+
+     http://java.sun.com/j2se/1.4.2/docs/
+
+     The Java 2 SDK documentation is also available in a download bundle 
+     which you can install locally on your machine. See the 
+     Java 2 SDK download page: 
+     
+     http://java.sun.com/j2se/1.4.2/download.html
+
+
+Redistribution
+
+      The term "vendors" used here refers to licensees, developers, 
+      and independent software vendors (ISVs) who license and 
+      distribute the Java 2 Runtime Environment with their programs. 
+      Vendors must follow the terms of the Java 2 SDK, Standard 
+      Edition, Binary Code License agreement. 
+      Required vs. Optional Files
+
+      The files that make up the Java 2 SDK, Standard Edition, are
+      divided into two categories: required and optional. Optional 
+      files may be excluded from redistributions of the Java 2 SDK 
+      at the vendor's discretion. The following section contains a 
+      list of the files and directories that may optionally be 
+      omitted from redistributions of the Java 2 SDK. All files not 
+      in these lists of optional files must be included in 
+      redistributions of the Java 2 SDK. 
+
+      Optional Files and Directories
+
+      The following files may be optionally excluded from 
+      redistributions:
+
+      jre/lib/charsets.jar 
+            Character conversion classes 
+      jre/lib/ext/ 
+            sunjce_provider.jar - the SunJCE provider for Java 
+              Cryptography APIs
+            localedata.jar - contains many of the resources 
+              needed for non US English locales
+            ldapsec.jar - contains security features supported 
+              by the LDAP service provider
+            dnsns.jar - for the InetAddress wrapper of JNDI DNS 
+              provider
+      bin/rmid and jre/bin/rmid 
+            Java RMI Activation System Daemon 
+      bin/rmiregistry and jre/bin/rmiregistry 
+            Java Remote Object Registry 
+      bin/tnameserv and jre/bin/tnameserv 
+            Java IDL Name Server 
+      bin/keytool and jre/bin/keytool 
+            Key and Certificate Management Tool 
+      bin/kinit and jre/bin/kinit
+            Used to obtain and cache Kerberos ticket-granting tickets
+      bin/klist and jre/bin/klist
+            Kerberos display entries in credentials cache and keytab
+      bin/ktab and jre/bin/ktab
+            Kerberos key table manager
+      bin/policytool and jre/bin/policytool 
+            Policy File Creation and Management Tool 
+      bin/orbd and jre/bin/orbd 
+            Object Request Broker Daemon 
+      bin/servertool and jre/bin/servertool 
+            Java IDL Server Tool 
+      src.zip 
+            Archive of source files 
+
+      In addition, the Java Web Start product may be excluded from
+      redistributions. The Java Web Start product is contained in a 
+      file named javaws-1_2-solaris-sparc-i.zip,
+      javaws-1_2-solaris-i586-i.zip,
+      javaws-1_2-linux-i586-i.zip, or
+      javaws-1_2-windows-i586-i.exe, depending on the platform. 
+
+
+      Unlimited Strength Java Cryptography Extension
+
+      Due to import control restrictions for some countries, the 
+      Java Cryptography Extension (JCE) policy files shipped with 
+      the Java 2 SDK, Standard Edition and the Java 2 Runtime 
+      Environment allow strong but limited cryptography to be 
+      used.  These files are located at
+
+      <java-home>/lib/security/local_policy.jar
+      <java-home>/lib/security/US_export_policy.jar
+
+      where <java-home> is the jre directory of the Java 2 
+      SDK or the top-level directory of the Java 2 Runtime 
+      Environment.
+
+      An unlimited strength version of these files indicating 
+      no restrictions on cryptographic strengths is available 
+      on the Java 2 SDK web site for those living in eligible 
+      countries.  Those living in eligible countries may download 
+      the unlimited strength version and replace the strong 
+      cryptography jar files with the unlimited strength files.
+
+
+      Endorsed Standards Override Mechanism
+
+      An endorsed standard is a Java API defined through a standards
+      process other than the Java Community Process(SM) (JCP(SM)).
+      Because endorsed standards are defined outside the JCP, it is
+      anticipated that such standards will be revised between 
+      releases of the Java 2 Platform. In order to take advantage of 
+      new revisions to endorsed standards, developers and software
+      vendors may use the Endorsed Standards Override Mechanism to
+      provide newer versions of an endorsed standard than those
+      included in the Java 2 Platform as released by Sun Microsystems.
+
+      For more information on the Endorsed Standards Override
+      Mechanism, including the list of platform packages that it may 
+      be used to override, see 
+
+            http://java.sun.com/j2se/1.4.2/docs/guide/standards/ 
+
+      Classes in the packages listed on that web page may be replaced
+      only by classes implementing a more recent version of the API 
+      as defined by the appropriate standards body. 
+
+      In addition to the packages listed in the document at the above 
+      URL, which are part of the Java 2 Platform, Standard Edition 
+      (J2SE(TM)) specification, redistributors of Sun's J2SE 
+      Reference Implementation are allowed to override classes whose 
+      sole purpose is to implement the functionality provided by 
+      public APIs defined in these Endorsed Standards packages.  
+      Redistributors may also override classes in the org.w3c.dom.* 
+      packages, or other classes whose sole purpose is to implement 
+      these APIs. 
+
+
+Sun Java Web Pages
+
+     For additional information, refer to these Sun Microsystems pages
+     on the World Wide Web:
+
+     http://java.sun.com/
+          The Java Software web site, with the latest information on
+          Java technology, product information, news, and features.
+     http://java.sun.com/docs
+          Java Platform Documentation provides access to white papers,
+          the Java Tutorial and other documents.
+     http://java.sun.com/jdc
+          The Java Developer Connection(SM) web site. (Free registration
+          required.) Additional technical information, news, and
+          features; user forums; support information, and much more.
+     http://java.sun.com/products/
+          Java Technology Products & API
+
+
+------------------------------------------------------------------------
+The Java 2 SDK, Standard Edition, is a product of Sun Microsystems(TM), 
+Inc.  This product includes code licensed from RSA Security.
+
+Copyright 2003 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, 
+California 95054, U.S.A.  All rights reserved.
+
+

jdk/test/javax/swing/JTree/6505523/bug6505523.java

@@ -0,0 +1,132 @@
+/*
+ * Copyright (c) 2012, 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.
+ *
+ * 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.
+ */
+
+/*
+ * @test
+ * @bug 6505523
+ * @summary NullPointerException in BasicTreeUI when a node is removed by expansion listener
+ * @author Alexandr Scherbatiy
+ * @run main bug6505523
+ */
+import java.awt.Point;
+import java.awt.Rectangle;
+import java.awt.Robot;
+import java.awt.Toolkit;
+import java.awt.event.InputEvent;
+import javax.swing.JFrame;
+import javax.swing.JScrollPane;
+import javax.swing.JTree;
+import javax.swing.SwingUtilities;
+import javax.swing.event.TreeExpansionEvent;
+import javax.swing.event.TreeExpansionListener;
+import javax.swing.tree.DefaultMutableTreeNode;
+import javax.swing.tree.DefaultTreeModel;
+import javax.swing.tree.TreeNode;
+import sun.awt.SunToolkit;
+
+public class bug6505523 {
+
+    private static JTree tree;
+
+    public static void main(String[] args) throws Exception {
+        SunToolkit toolkit = (SunToolkit) Toolkit.getDefaultToolkit();
+        Robot robot = new Robot();
+        robot.setAutoDelay(50);
+
+        SwingUtilities.invokeAndWait(new Runnable() {
+
+            @Override
+            public void run() {
+                createAndShowGUI();
+            }
+        });
+
+        toolkit.realSync();
+
+        Point point = getRowPointToClick(2);
+        robot.mouseMove(point.x, point.y);
+        robot.mousePress(InputEvent.BUTTON1_MASK);
+        robot.mouseRelease(InputEvent.BUTTON1_MASK);
+
+        toolkit.realSync();
+
+    }
+
+    private static Point getRowPointToClick(final int row) throws Exception {
+
+        final Point[] result = new Point[1];
+
+        SwingUtilities.invokeAndWait(new Runnable() {
+
+            @Override
+            public void run() {
+                Rectangle rect = tree.getRowBounds(row);
+                Point point = new Point(rect.x - 5, rect.y + rect.height / 2);
+                SwingUtilities.convertPointToScreen(point, tree);
+                result[0] = point;
+            }
+        });
+
+        return result[0];
+    }
+
+    private static void createAndShowGUI() {
+        final DefaultMutableTreeNode root = new DefaultMutableTreeNode("Problem with NPE under JDK 1.6");
+        final DefaultMutableTreeNode problematic = new DefaultMutableTreeNode("Expand me and behold a NPE in stderr");
+        problematic.add(new DefaultMutableTreeNode("some content"));
+        root.add(new DefaultMutableTreeNode("irrelevant..."));
+        root.add(problematic);
+
+        final DefaultTreeModel model = new DefaultTreeModel(root);
+        tree = new JTree(model);
+        tree.setRootVisible(true);
+        tree.setShowsRootHandles(true);
+        tree.expandRow(0);
+        tree.collapseRow(2);
+
+        // this is critical - without dragEnabled everything works
+        tree.setDragEnabled(true);
+
+        tree.addTreeExpansionListener(new TreeExpansionListener() {
+
+            @Override
+            public void treeExpanded(TreeExpansionEvent event) {
+                TreeNode parent = problematic.getParent();
+                if (parent instanceof DefaultMutableTreeNode) {
+                    model.removeNodeFromParent(problematic);
+                }
+            }
+
+            @Override
+            public void treeCollapsed(TreeExpansionEvent event) {
+            }
+        });
+
+        JFrame frame = new JFrame("JTree Problem");
+        frame.add(new JScrollPane(tree));
+        frame.setSize(500, 300);
+        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        frame.setLocationRelativeTo(null);
+        frame.setVisible(true);
+    }
+}