--- a/jdk/src/share/classes/com/sun/java/swing/plaf/motif/MotifInternalFrameTitlePane.java	Mon Oct 14 18:19:19 2013 +0400
+++ b/jdk/src/share/classes/com/sun/java/swing/plaf/motif/MotifInternalFrameTitlePane.java	Mon Oct 14 18:52:25 2013 +0400
@@ -86,19 +86,19 @@
 
     protected void assembleSystemMenu() {
         systemMenu = new JPopupMenu();
-        JMenuItem mi = systemMenu.add(new JMenuItem(restoreAction));
-        mi.setMnemonic('R');
-        mi = systemMenu.add(new JMenuItem(moveAction));
-        mi.setMnemonic('M');
-        mi = systemMenu.add(new JMenuItem(sizeAction));
-        mi.setMnemonic('S');
-        mi = systemMenu.add(new JMenuItem(iconifyAction));
-        mi.setMnemonic('n');
-        mi = systemMenu.add(new JMenuItem(maximizeAction));
-        mi.setMnemonic('x');
+        JMenuItem mi = systemMenu.add(restoreAction);
+        mi.setMnemonic(getButtonMnemonic("restore"));
+        mi = systemMenu.add(moveAction);
+        mi.setMnemonic(getButtonMnemonic("move"));
+        mi = systemMenu.add(sizeAction);
+        mi.setMnemonic(getButtonMnemonic("size"));
+        mi = systemMenu.add(iconifyAction);
+        mi.setMnemonic(getButtonMnemonic("minimize"));
+        mi = systemMenu.add(maximizeAction);
+        mi.setMnemonic(getButtonMnemonic("maximize"));
         systemMenu.add(new JSeparator());
-        mi = systemMenu.add(new JMenuItem(closeAction));
-        mi.setMnemonic('C');
+        mi = systemMenu.add(closeAction);
+        mi.setMnemonic(getButtonMnemonic("close"));
 
         systemButton = new SystemButton();
         systemButton.addActionListener(new ActionListener() {
@@ -124,6 +124,14 @@
         });
     }
 
+    private static int getButtonMnemonic(String button) {
+        try {
+            return Integer.parseInt(UIManager.getString(
+                    "InternalFrameTitlePane." + button + "Button.mnemonic"));
+        } catch (NumberFormatException e) {
+            return -1;
+        }
+    }
 
     protected void createButtons() {
         minimizeButton = new MinimizeButton();

--- a/jdk/src/share/classes/com/sun/java/swing/plaf/windows/WindowsInternalFrameTitlePane.java	Mon Oct 14 18:19:19 2013 +0400
+++ b/jdk/src/share/classes/com/sun/java/swing/plaf/windows/WindowsInternalFrameTitlePane.java	Mon Oct 14 18:52:25 2013 +0400
@@ -326,18 +326,27 @@
 
     protected void addSystemMenuItems(JPopupMenu menu) {
         JMenuItem mi = menu.add(restoreAction);
-        mi.setMnemonic('R');
+        mi.setMnemonic(getButtonMnemonic("restore"));
         mi = menu.add(moveAction);
-        mi.setMnemonic('M');
+        mi.setMnemonic(getButtonMnemonic("move"));
         mi = menu.add(sizeAction);
-        mi.setMnemonic('S');
+        mi.setMnemonic(getButtonMnemonic("size"));
         mi = menu.add(iconifyAction);
-        mi.setMnemonic('n');
+        mi.setMnemonic(getButtonMnemonic("minimize"));
         mi = menu.add(maximizeAction);
-        mi.setMnemonic('x');
-        systemPopupMenu.add(new JSeparator());
+        mi.setMnemonic(getButtonMnemonic("maximize"));
+        menu.add(new JSeparator());
         mi = menu.add(closeAction);
-        mi.setMnemonic('C');
+        mi.setMnemonic(getButtonMnemonic("close"));
+    }
+
+    private static int getButtonMnemonic(String button) {
+        try {
+            return Integer.parseInt(UIManager.getString(
+                    "InternalFrameTitlePane." + button + "Button.mnemonic"));
+        } catch (NumberFormatException e) {
+            return -1;
+        }
     }
 
     protected void showSystemMenu(){

--- a/jdk/src/share/classes/com/sun/swing/internal/plaf/basic/resources/basic.properties	Mon Oct 14 18:19:19 2013 +0400
+++ b/jdk/src/share/classes/com/sun/swing/internal/plaf/basic/resources/basic.properties	Mon Oct 14 18:52:25 2013 +0400
@@ -144,12 +144,12 @@
 InternalFrame.closeButtonToolTip=Close
 
 ############ Internal Frame Title Pane Strings ############
-InternalFrameTitlePane.restoreButton.textAndMnemonic=Restore
-InternalFrameTitlePane.moveButton.textAndMnemonic=Move
-InternalFrameTitlePane.sizeButton.textAndMnemonic=Size
-InternalFrameTitlePane.minimizeButton.textAndMnemonic=Minimize
-InternalFrameTitlePane.maximizeButton.textAndMnemonic=Maximize
-InternalFrameTitlePane.closeButton.textAndMnemonic=Close
+InternalFrameTitlePane.restoreButton.textAndMnemonic=&Restore
+InternalFrameTitlePane.moveButton.textAndMnemonic=&Move
+InternalFrameTitlePane.sizeButton.textAndMnemonic=&Size
+InternalFrameTitlePane.minimizeButton.textAndMnemonic=Mi&nimize
+InternalFrameTitlePane.maximizeButton.textAndMnemonic=Ma&ximize
+InternalFrameTitlePane.closeButton.textAndMnemonic=&Close
 
 ############ Text strings #############
 # Used for html forms

--- a/jdk/src/share/classes/com/sun/swing/internal/plaf/basic/resources/basic_de.properties	Mon Oct 14 18:19:19 2013 +0400
+++ b/jdk/src/share/classes/com/sun/swing/internal/plaf/basic/resources/basic_de.properties	Mon Oct 14 18:52:25 2013 +0400
@@ -143,12 +143,12 @@
 InternalFrame.closeButtonToolTip=Schlie\u00DFen
 
 ############ Internal Frame Title Pane Strings ############
-InternalFrameTitlePane.restoreButton.textAndMnemonic=Wiederherstellen
-InternalFrameTitlePane.moveButton.textAndMnemonic=Verschieben
-InternalFrameTitlePane.sizeButton.textAndMnemonic=Gr\u00F6\u00DFe
-InternalFrameTitlePane.minimizeButton.textAndMnemonic=Minimieren
-InternalFrameTitlePane.maximizeButton.textAndMnemonic=Maximieren
-InternalFrameTitlePane.closeButton.textAndMnemonic=Schlie\u00DFen
+InternalFrameTitlePane.restoreButton.textAndMnemonic=Wiede&rherstellen
+InternalFrameTitlePane.moveButton.textAndMnemonic=Verschieben(&M)
+InternalFrameTitlePane.sizeButton.textAndMnemonic=Gr\u00F6\u00DFe(&S)
+InternalFrameTitlePane.minimizeButton.textAndMnemonic=Mi&nimieren
+InternalFrameTitlePane.maximizeButton.textAndMnemonic=Ma&ximieren
+InternalFrameTitlePane.closeButton.textAndMnemonic=S&chlie\u00DFen
 
 ############ Text strings #############
 # Used for html forms

--- a/jdk/src/share/classes/com/sun/swing/internal/plaf/basic/resources/basic_es.properties	Mon Oct 14 18:19:19 2013 +0400
+++ b/jdk/src/share/classes/com/sun/swing/internal/plaf/basic/resources/basic_es.properties	Mon Oct 14 18:52:25 2013 +0400
@@ -143,12 +143,12 @@
 InternalFrame.closeButtonToolTip=Cerrar
 
 ############ Internal Frame Title Pane Strings ############
-InternalFrameTitlePane.restoreButton.textAndMnemonic=Restaurar
-InternalFrameTitlePane.moveButton.textAndMnemonic=Mover
-InternalFrameTitlePane.sizeButton.textAndMnemonic=Tama\u00F1o
-InternalFrameTitlePane.minimizeButton.textAndMnemonic=Minimizar
-InternalFrameTitlePane.maximizeButton.textAndMnemonic=Maximizar
-InternalFrameTitlePane.closeButton.textAndMnemonic=Cerrar
+InternalFrameTitlePane.restoreButton.textAndMnemonic=&Restaurar
+InternalFrameTitlePane.moveButton.textAndMnemonic=&Mover
+InternalFrameTitlePane.sizeButton.textAndMnemonic=Tama\u00F1o(&S)
+InternalFrameTitlePane.minimizeButton.textAndMnemonic=Mi&nimizar
+InternalFrameTitlePane.maximizeButton.textAndMnemonic=Ma&ximizar
+InternalFrameTitlePane.closeButton.textAndMnemonic=&Cerrar
 
 ############ Text strings #############
 # Used for html forms

--- a/jdk/src/share/classes/com/sun/swing/internal/plaf/basic/resources/basic_fr.properties	Mon Oct 14 18:19:19 2013 +0400
+++ b/jdk/src/share/classes/com/sun/swing/internal/plaf/basic/resources/basic_fr.properties	Mon Oct 14 18:52:25 2013 +0400
@@ -143,12 +143,12 @@
 InternalFrame.closeButtonToolTip=Fermer
 
 ############ Internal Frame Title Pane Strings ############
-InternalFrameTitlePane.restoreButton.textAndMnemonic=Restaurer
-InternalFrameTitlePane.moveButton.textAndMnemonic=D\u00E9placer
-InternalFrameTitlePane.sizeButton.textAndMnemonic=Taille
-InternalFrameTitlePane.minimizeButton.textAndMnemonic=R\u00E9duire
-InternalFrameTitlePane.maximizeButton.textAndMnemonic=Agrandir
-InternalFrameTitlePane.closeButton.textAndMnemonic=Fermer
+InternalFrameTitlePane.restoreButton.textAndMnemonic=&Restaurer
+InternalFrameTitlePane.moveButton.textAndMnemonic=D\u00E9placer(&M)
+InternalFrameTitlePane.sizeButton.textAndMnemonic=Taille(&S)
+InternalFrameTitlePane.minimizeButton.textAndMnemonic=R\u00E9duire(&N)
+InternalFrameTitlePane.maximizeButton.textAndMnemonic=Agrandir(&X)
+InternalFrameTitlePane.closeButton.textAndMnemonic=Fermer(&C)
 
 ############ Text strings #############
 # Used for html forms

--- a/jdk/src/share/classes/com/sun/swing/internal/plaf/basic/resources/basic_it.properties	Mon Oct 14 18:19:19 2013 +0400
+++ b/jdk/src/share/classes/com/sun/swing/internal/plaf/basic/resources/basic_it.properties	Mon Oct 14 18:52:25 2013 +0400
@@ -143,12 +143,12 @@
 InternalFrame.closeButtonToolTip=Chiudi
 
 ############ Internal Frame Title Pane Strings ############
-InternalFrameTitlePane.restoreButton.textAndMnemonic=Ripristina
-InternalFrameTitlePane.moveButton.textAndMnemonic=Sposta
-InternalFrameTitlePane.sizeButton.textAndMnemonic=Dimensioni
-InternalFrameTitlePane.minimizeButton.textAndMnemonic=Riduci a icona
-InternalFrameTitlePane.maximizeButton.textAndMnemonic=Ingrandisci
-InternalFrameTitlePane.closeButton.textAndMnemonic=Chiudi
+InternalFrameTitlePane.restoreButton.textAndMnemonic=&Ripristina
+InternalFrameTitlePane.moveButton.textAndMnemonic=Sposta(&M)
+InternalFrameTitlePane.sizeButton.textAndMnemonic=Dimen&sioni
+InternalFrameTitlePane.minimizeButton.textAndMnemonic=Riduci a ico&na
+InternalFrameTitlePane.maximizeButton.textAndMnemonic=Ingrandisci(&X)
+InternalFrameTitlePane.closeButton.textAndMnemonic=&Chiudi
 
 ############ Text strings #############
 # Used for html forms

--- a/jdk/src/share/classes/com/sun/swing/internal/plaf/basic/resources/basic_ja.properties	Mon Oct 14 18:19:19 2013 +0400
+++ b/jdk/src/share/classes/com/sun/swing/internal/plaf/basic/resources/basic_ja.properties	Mon Oct 14 18:52:25 2013 +0400
@@ -143,12 +143,12 @@
 InternalFrame.closeButtonToolTip=\u9589\u3058\u308B
 
 ############ Internal Frame Title Pane Strings ############
-InternalFrameTitlePane.restoreButton.textAndMnemonic=\u5FA9\u5143
-InternalFrameTitlePane.moveButton.textAndMnemonic=\u79FB\u52D5
-InternalFrameTitlePane.sizeButton.textAndMnemonic=\u30B5\u30A4\u30BA
-InternalFrameTitlePane.minimizeButton.textAndMnemonic=\u6700\u5C0F\u5316
-InternalFrameTitlePane.maximizeButton.textAndMnemonic=\u6700\u5927\u5316
-InternalFrameTitlePane.closeButton.textAndMnemonic=\u9589\u3058\u308B
+InternalFrameTitlePane.restoreButton.textAndMnemonic=\u5FA9\u5143(&R)
+InternalFrameTitlePane.moveButton.textAndMnemonic=\u79FB\u52D5(&M)
+InternalFrameTitlePane.sizeButton.textAndMnemonic=\u30B5\u30A4\u30BA(&S)
+InternalFrameTitlePane.minimizeButton.textAndMnemonic=\u6700\u5C0F\u5316(&N)
+InternalFrameTitlePane.maximizeButton.textAndMnemonic=\u6700\u5927\u5316(&X)
+InternalFrameTitlePane.closeButton.textAndMnemonic=\u9589\u3058\u308B(&C)
 
 ############ Text strings #############
 # Used for html forms

--- a/jdk/src/share/classes/com/sun/swing/internal/plaf/basic/resources/basic_ko.properties	Mon Oct 14 18:19:19 2013 +0400
+++ b/jdk/src/share/classes/com/sun/swing/internal/plaf/basic/resources/basic_ko.properties	Mon Oct 14 18:52:25 2013 +0400
@@ -143,12 +143,12 @@
 InternalFrame.closeButtonToolTip=\uB2EB\uAE30
 
 ############ Internal Frame Title Pane Strings ############
-InternalFrameTitlePane.restoreButton.textAndMnemonic=\uBCF5\uC6D0
-InternalFrameTitlePane.moveButton.textAndMnemonic=\uC774\uB3D9
-InternalFrameTitlePane.sizeButton.textAndMnemonic=\uD06C\uAE30
-InternalFrameTitlePane.minimizeButton.textAndMnemonic=\uCD5C\uC18C\uD654
-InternalFrameTitlePane.maximizeButton.textAndMnemonic=\uCD5C\uB300\uD654
-InternalFrameTitlePane.closeButton.textAndMnemonic=\uB2EB\uAE30
+InternalFrameTitlePane.restoreButton.textAndMnemonic=\uBCF5\uC6D0(&R)
+InternalFrameTitlePane.moveButton.textAndMnemonic=\uC774\uB3D9(&M)
+InternalFrameTitlePane.sizeButton.textAndMnemonic=\uD06C\uAE30(&S)
+InternalFrameTitlePane.minimizeButton.textAndMnemonic=\uCD5C\uC18C\uD654(&N)
+InternalFrameTitlePane.maximizeButton.textAndMnemonic=\uCD5C\uB300\uD654(&X)
+InternalFrameTitlePane.closeButton.textAndMnemonic=\uB2EB\uAE30(&C)
 
 ############ Text strings #############
 # Used for html forms

--- a/jdk/src/share/classes/com/sun/swing/internal/plaf/basic/resources/basic_pt_BR.properties	Mon Oct 14 18:19:19 2013 +0400
+++ b/jdk/src/share/classes/com/sun/swing/internal/plaf/basic/resources/basic_pt_BR.properties	Mon Oct 14 18:52:25 2013 +0400
@@ -143,12 +143,12 @@
 InternalFrame.closeButtonToolTip=Fechar
 
 ############ Internal Frame Title Pane Strings ############
-InternalFrameTitlePane.restoreButton.textAndMnemonic=Restaurar
-InternalFrameTitlePane.moveButton.textAndMnemonic=Mover
-InternalFrameTitlePane.sizeButton.textAndMnemonic=Tamanho
-InternalFrameTitlePane.minimizeButton.textAndMnemonic=Minimizar
-InternalFrameTitlePane.maximizeButton.textAndMnemonic=Maximizar
-InternalFrameTitlePane.closeButton.textAndMnemonic=Fechar
+InternalFrameTitlePane.restoreButton.textAndMnemonic=&Restaurar
+InternalFrameTitlePane.moveButton.textAndMnemonic=&Mover
+InternalFrameTitlePane.sizeButton.textAndMnemonic=Tamanho(&S)
+InternalFrameTitlePane.minimizeButton.textAndMnemonic=Mi&nimizar
+InternalFrameTitlePane.maximizeButton.textAndMnemonic=Ma&ximizar
+InternalFrameTitlePane.closeButton.textAndMnemonic=Fe&char
 
 ############ Text strings #############
 # Used for html forms

--- a/jdk/src/share/classes/com/sun/swing/internal/plaf/basic/resources/basic_sv.properties	Mon Oct 14 18:19:19 2013 +0400
+++ b/jdk/src/share/classes/com/sun/swing/internal/plaf/basic/resources/basic_sv.properties	Mon Oct 14 18:52:25 2013 +0400
@@ -143,12 +143,12 @@
 InternalFrame.closeButtonToolTip=St\u00E4ng
 
 ############ Internal Frame Title Pane Strings ############
-InternalFrameTitlePane.restoreButton.textAndMnemonic=\u00C5terst\u00E4ll
-InternalFrameTitlePane.moveButton.textAndMnemonic=Flytta
-InternalFrameTitlePane.sizeButton.textAndMnemonic=Storlek
-InternalFrameTitlePane.minimizeButton.textAndMnemonic=Minimera
-InternalFrameTitlePane.maximizeButton.textAndMnemonic=Maximera
-InternalFrameTitlePane.closeButton.textAndMnemonic=St\u00E4ng
+InternalFrameTitlePane.restoreButton.textAndMnemonic=\u00C5terst\u00E4ll(&R)
+InternalFrameTitlePane.moveButton.textAndMnemonic=Flytta(&M)
+InternalFrameTitlePane.sizeButton.textAndMnemonic=&Storlek
+InternalFrameTitlePane.minimizeButton.textAndMnemonic=Mi&nimera
+InternalFrameTitlePane.maximizeButton.textAndMnemonic=Ma&ximera
+InternalFrameTitlePane.closeButton.textAndMnemonic=St\u00E4ng(&C)
 
 ############ Text strings #############
 # Used for html forms

--- a/jdk/src/share/classes/com/sun/swing/internal/plaf/basic/resources/basic_zh_CN.properties	Mon Oct 14 18:19:19 2013 +0400
+++ b/jdk/src/share/classes/com/sun/swing/internal/plaf/basic/resources/basic_zh_CN.properties	Mon Oct 14 18:52:25 2013 +0400
@@ -143,12 +143,12 @@
 InternalFrame.closeButtonToolTip=\u5173\u95ED
 
 ############ Internal Frame Title Pane Strings ############
-InternalFrameTitlePane.restoreButton.textAndMnemonic=\u8FD8\u539F
-InternalFrameTitlePane.moveButton.textAndMnemonic=\u79FB\u52A8
-InternalFrameTitlePane.sizeButton.textAndMnemonic=\u5927\u5C0F
-InternalFrameTitlePane.minimizeButton.textAndMnemonic=\u6700\u5C0F\u5316
-InternalFrameTitlePane.maximizeButton.textAndMnemonic=\u6700\u5927\u5316
-InternalFrameTitlePane.closeButton.textAndMnemonic=\u5173\u95ED
+InternalFrameTitlePane.restoreButton.textAndMnemonic=\u8FD8\u539F(&R)
+InternalFrameTitlePane.moveButton.textAndMnemonic=\u79FB\u52A8(&M)
+InternalFrameTitlePane.sizeButton.textAndMnemonic=\u5927\u5C0F(&S)
+InternalFrameTitlePane.minimizeButton.textAndMnemonic=\u6700\u5C0F\u5316(&N)
+InternalFrameTitlePane.maximizeButton.textAndMnemonic=\u6700\u5927\u5316(&X)
+InternalFrameTitlePane.closeButton.textAndMnemonic=\u5173\u95ED(&C)
 
 ############ Text strings #############
 # Used for html forms

--- a/jdk/src/share/classes/com/sun/swing/internal/plaf/basic/resources/basic_zh_TW.properties	Mon Oct 14 18:19:19 2013 +0400
+++ b/jdk/src/share/classes/com/sun/swing/internal/plaf/basic/resources/basic_zh_TW.properties	Mon Oct 14 18:52:25 2013 +0400
@@ -143,12 +143,12 @@
 InternalFrame.closeButtonToolTip=\u95DC\u9589
 
 ############ Internal Frame Title Pane Strings ############
-InternalFrameTitlePane.restoreButton.textAndMnemonic=\u5FA9\u539F
-InternalFrameTitlePane.moveButton.textAndMnemonic=\u79FB\u52D5
-InternalFrameTitlePane.sizeButton.textAndMnemonic=\u5927\u5C0F
-InternalFrameTitlePane.minimizeButton.textAndMnemonic=\u6700\u5C0F\u5316
-InternalFrameTitlePane.maximizeButton.textAndMnemonic=\u6700\u5927\u5316
-InternalFrameTitlePane.closeButton.textAndMnemonic=\u95DC\u9589
+InternalFrameTitlePane.restoreButton.textAndMnemonic=\u5FA9\u539F(&R)
+InternalFrameTitlePane.moveButton.textAndMnemonic=\u79FB\u52D5(&M)
+InternalFrameTitlePane.sizeButton.textAndMnemonic=\u5927\u5C0F(&S)
+InternalFrameTitlePane.minimizeButton.textAndMnemonic=\u6700\u5C0F\u5316(&N)
+InternalFrameTitlePane.maximizeButton.textAndMnemonic=\u6700\u5927\u5316(&X)
+InternalFrameTitlePane.closeButton.textAndMnemonic=\u95DC\u9589(&C)
 
 ############ Text strings #############
 # Used for html forms

--- a/jdk/src/share/classes/javax/swing/plaf/basic/BasicInternalFrameTitlePane.java	Mon Oct 14 18:19:19 2013 +0400
+++ b/jdk/src/share/classes/javax/swing/plaf/basic/BasicInternalFrameTitlePane.java	Mon Oct 14 18:52:25 2013 +0400
@@ -270,18 +270,27 @@
 
     protected void addSystemMenuItems(JMenu systemMenu) {
         JMenuItem mi = systemMenu.add(restoreAction);
-        mi.setMnemonic('R');
+        mi.setMnemonic(getButtonMnemonic("restore"));
         mi = systemMenu.add(moveAction);
-        mi.setMnemonic('M');
+        mi.setMnemonic(getButtonMnemonic("move"));
         mi = systemMenu.add(sizeAction);
-        mi.setMnemonic('S');
+        mi.setMnemonic(getButtonMnemonic("size"));
         mi = systemMenu.add(iconifyAction);
-        mi.setMnemonic('n');
+        mi.setMnemonic(getButtonMnemonic("minimize"));
         mi = systemMenu.add(maximizeAction);
-        mi.setMnemonic('x');
+        mi.setMnemonic(getButtonMnemonic("maximize"));
         systemMenu.add(new JSeparator());
         mi = systemMenu.add(closeAction);
-        mi.setMnemonic('C');
+        mi.setMnemonic(getButtonMnemonic("close"));
+    }
+
+    private static int getButtonMnemonic(String button) {
+        try {
+            return Integer.parseInt(UIManager.getString(
+                    "InternalFrameTitlePane." + button + "Button.mnemonic"));
+        } catch (NumberFormatException e) {
+            return -1;
+        }
     }
 
     protected JMenu createSystemMenu() {

--- a/jdk/src/share/classes/javax/swing/plaf/synth/SynthInternalFrameTitlePane.java	Mon Oct 14 18:19:19 2013 +0400
+++ b/jdk/src/share/classes/javax/swing/plaf/synth/SynthInternalFrameTitlePane.java	Mon Oct 14 18:52:25 2013 +0400
@@ -191,20 +191,28 @@
     }
 
     protected void addSystemMenuItems(JPopupMenu menu) {
-        // PENDING: this should all be localizable!
         JMenuItem mi = menu.add(restoreAction);
-        mi.setMnemonic('R');
+        mi.setMnemonic(getButtonMnemonic("restore"));
         mi = menu.add(moveAction);
-        mi.setMnemonic('M');
+        mi.setMnemonic(getButtonMnemonic("move"));
         mi = menu.add(sizeAction);
-        mi.setMnemonic('S');
+        mi.setMnemonic(getButtonMnemonic("size"));
         mi = menu.add(iconifyAction);
-        mi.setMnemonic('n');
+        mi.setMnemonic(getButtonMnemonic("minimize"));
         mi = menu.add(maximizeAction);
-        mi.setMnemonic('x');
+        mi.setMnemonic(getButtonMnemonic("maximize"));
         menu.add(new JSeparator());
         mi = menu.add(closeAction);
-        mi.setMnemonic('C');
+        mi.setMnemonic(getButtonMnemonic("close"));
+    }
+
+    private static int getButtonMnemonic(String button) {
+        try {
+            return Integer.parseInt(UIManager.getString(
+                    "InternalFrameTitlePane." + button + "Button.mnemonic"));
+        } catch (NumberFormatException e) {
+            return -1;
+        }
     }
 
     protected void showSystemMenu() {

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/javax/swing/JInternalFrame/8020708/bug8020708.java	Mon Oct 14 18:52:25 2013 +0400
@@ -0,0 +1,141 @@
+/*
+ * 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.Point;
+import java.awt.Robot;
+import java.awt.Toolkit;
+import java.awt.event.InputEvent;
+import java.awt.event.KeyEvent;
+import java.util.Locale;
+import javax.swing.JDesktopPane;
+import javax.swing.JFrame;
+import javax.swing.JInternalFrame;
+import javax.swing.SwingUtilities;
+import javax.swing.UIManager;
+import sun.awt.SunToolkit;
+
+/**
+ * @test
+ * @bug 8020708
+ * @author Alexander Scherbatiy
+ * @summary NLS: mnemonics missing in SwingSet2/JInternalFrame demo
+ * @library ../../regtesthelpers
+ * @build Util
+ * @run main bug8020708
+ */
+public class bug8020708 {
+
+    private static final Locale[] SUPPORTED_LOCALES = {
+        Locale.ENGLISH,
+        new Locale("de"),
+        new Locale("es"),
+        new Locale("fr"),
+        new Locale("it"),
+        new Locale("ja"),
+        new Locale("ko"),
+        new Locale("pt", "BR"),
+        new Locale("sv"),
+        new Locale("zh", "CN"),
+        new Locale("zh", "TW")
+    };
+    private static final String[] LOOK_AND_FEELS = {
+        "Nimbus",
+        "Windows",
+        "Motif"
+    };
+    private static JInternalFrame internalFrame;
+    private static JFrame frame;
+
+    public static void main(String[] args) throws Exception {
+        for (Locale locale : SUPPORTED_LOCALES) {
+            for (String laf : LOOK_AND_FEELS) {
+                Locale.setDefault(locale);
+                if (!installLookAndFeel(laf)) {
+                    continue;
+                }
+                testInternalFrameMnemonic();
+            }
+        }
+    }
+
+    static void testInternalFrameMnemonic() throws Exception {
+        SunToolkit toolkit = (SunToolkit) Toolkit.getDefaultToolkit();
+        Robot robot = new Robot();
+        robot.setAutoDelay(50);
+
+        SwingUtilities.invokeAndWait(new Runnable() {
+            @Override
+            public void run() {
+                frame = new JFrame("Test");
+                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+                frame.setSize(300, 200);
+
+                JDesktopPane desktop = new JDesktopPane();
+                internalFrame = new JInternalFrame("Test");
+                internalFrame.setSize(200, 100);
+                internalFrame.setClosable(true);
+                desktop.add(internalFrame);
+                internalFrame.setVisible(true);
+                internalFrame.setMaximizable(true);
+
+                frame.getContentPane().add(desktop);
+                frame.setVisible(true);
+            }
+        });
+
+        toolkit.realSync();
+
+        Point clickPoint = Util.getCenterPoint(internalFrame);
+        robot.mouseMove(clickPoint.x, clickPoint.y);
+        robot.mousePress(InputEvent.BUTTON1_MASK);
+        robot.mouseRelease(InputEvent.BUTTON1_MASK);
+        toolkit.realSync();
+
+        Util.hitKeys(robot, KeyEvent.VK_CONTROL, KeyEvent.VK_SPACE);
+        toolkit.realSync();
+
+        Util.hitKeys(robot, KeyEvent.VK_C);
+        toolkit.realSync();
+
+        SwingUtilities.invokeAndWait(new Runnable() {
+            @Override
+            public void run() {
+                if (internalFrame.isVisible()) {
+                    throw new RuntimeException("Close mnemonic does not work");
+                }
+                frame.dispose();
+            }
+        });
+    }
+
+    static final boolean installLookAndFeel(String lafName) throws Exception {
+        UIManager.LookAndFeelInfo[] infos = UIManager.getInstalledLookAndFeels();
+        for (UIManager.LookAndFeelInfo info : infos) {
+            if (info.getClassName().contains(lafName)) {
+                UIManager.setLookAndFeel(info.getClassName());
+                return true;
+            }
+        }
+        return false;
+    }
+}