8013370: Null pointer exception when adding more than 9 accelators to a JMenuBar

Reviewed-by: serb

src/share/classes/javax/swing/KeyboardManager.java

@@ -285,10 +285,11 @@ class KeyboardManager {
                  while (iter.hasMoreElements()) {
                      JMenuBar mb = (JMenuBar)iter.nextElement();
                      if ( mb.isShowing() && mb.isEnabled() ) { // don't want to give these out
-                         if( !(ks.equals(ksE)) ) {
+                         boolean extended = (ksE != null) && !ksE.equals(ks);
+                         if (extended) {
                              fireBinding(mb, ksE, e, pressed);
                          }
-                         if(ks.equals(ksE) || !e.isConsumed()) {
+                         if (!extended || !e.isConsumed()) {
                              fireBinding(mb, ks, e, pressed);
                          }
                          if (e.isConsumed()) {

test/javax/swing/KeyboardManager/8013370/Test8013370.java

+/*
+ * Copyright (c) 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.
+ *
+ * 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.
+ */
+
+import java.awt.Robot;
+import java.awt.Toolkit;
+import java.awt.event.ActionEvent;
+import java.awt.event.KeyEvent;
+
+import javax.swing.AbstractAction;
+import javax.swing.InputMap;
+import javax.swing.JFrame;
+import javax.swing.JMenuBar;
+import javax.swing.JMenuItem;
+import javax.swing.KeyStroke;
+import sun.awt.SunToolkit;
+
+import static java.awt.event.InputEvent.CTRL_DOWN_MASK;
+import static javax.swing.JComponent.WHEN_IN_FOCUSED_WINDOW;
+import static javax.swing.JOptionPane.showMessageDialog;
+import static javax.swing.SwingUtilities.invokeAndWait;
+
+/*
+ * @test
+ * @bug 8013370
+ * @summary Ensure that key stroke is not null
+ * @author Sergey Malenkov
+ */
+
+public class Test8013370 implements Runnable {
+    public static void main(String[] args) throws Exception {
+        Test8013370 task = new Test8013370();
+        invokeAndWait(task);
+
+        Robot robot = new Robot();
+        robot.waitForIdle();
+        robot.keyPress(KeyEvent.VK_CONTROL);
+        robot.keyRelease(KeyEvent.VK_CONTROL);
+        robot.waitForIdle();
+
+        invokeAndWait(task);
+        task.validate();
+    }
+
+    private JFrame frame;
+    private boolean error;
+
+    @Override
+    public void run() {
+        if (this.frame == null) {
+            JMenuBar menu = new JMenuBar() {
+                @Override
+                protected boolean processKeyBinding(KeyStroke stroke, KeyEvent event, int condition, boolean pressed) {
+                    if (stroke == null) {
+                        Test8013370.this.error = true;
+                        return false;
+                    }
+                    return super.processKeyBinding(stroke, event, condition, pressed);
+                }
+            };
+            menu.add(new JMenuItem("Menu"));
+
+            InputMap map = menu.getInputMap(WHEN_IN_FOCUSED_WINDOW);
+            // We add exactly 10 actions because the ArrayTable is converted
+            // from a array to a hashtable when more than 8 values are added.
+            for (int i = 0; i < 9; i++) {
+                String name = " Action #" + i;
+                map.put(KeyStroke.getKeyStroke(KeyEvent.VK_A + i, CTRL_DOWN_MASK), name);
+
+                menu.getActionMap().put(name, new AbstractAction(name) {
+                    @Override
+                    public void actionPerformed(ActionEvent event) {
+                        showMessageDialog(null, getValue(NAME));
+                    }
+                });
+            }
+            this.frame = new JFrame("8013370");
+            this.frame.setJMenuBar(menu);
+            this.frame.setVisible(true);
+        }
+        else {
+            this.frame.dispose();
+        }
+    }
+
+    private void validate() {
+        if (this.error) {
+            throw new Error("KeyStroke is null");
+        }
+    }
+}