The following code below leads to throwing
"java.lang.StringIndexOutOfBoundsException: String index out of range: 0"

JDK7 b70 - PASSES
JDK7 b73 - FAILS
JDK7 b74 - PASSES

Platforms: Windows, Solaris x86
--------------------------------------------------------------------------
import javax.swing.*;

public class JMenu2030 {

    public static void main(String[] args) throws Exception {
        SwingUtilities.invokeAndWait(new Runnable() {
            @Override public void run() {
                JFrame frame = new JFrame();
                try {
                    JMenu c = new JMenu();
                    frame.setJMenuBar(new JMenuBar());
                    frame.getJMenuBar().add(c);
                    frame.setVisible(true);
                } finally {
                    frame.dispose();
                }
            }
        });
    }
}
--------------------------------------------------------------------------
Exception in thread "main" java.lang.reflect.InvocationTargetException
at java.awt.EventQueue.invokeAndWait(EventQueue.java:1034)
at javax.swing.SwingUtilities.invokeAndWait(SwingUtilities.java:1346)
at jmenu.JMenu2030.main(JMenu2030.java:8)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:617)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:105)
Caused by: java.lang.StringIndexOutOfBoundsException: String index out of range: 0
at java.lang.String.charAt(String.java:694)
at sun.swing.SwingUtilities2.getLeftSideBearing(SwingUtilities2.java:248)
at sun.swing.MenuItemLayoutHelper.getLeftExtraWidth(MenuItemLayoutHelper.java:162)
at sun.swing.MenuItemLayoutHelper.calcExtraWidths(MenuItemLayoutHelper.java:158)
at sun.swing.MenuItemLayoutHelper.reset(MenuItemLayoutHelper.java:148)
at sun.swing.MenuItemLayoutHelper.<init>(MenuItemLayoutHelper.java:107)
at javax.swing.plaf.basic.BasicMenuItemUI.getPreferredMenuItemSize(BasicMenuItemUI.java:408)
at javax.swing.plaf.basic.BasicMenuItemUI.getPreferredSize(BasicMenuItemUI.java:363)
at javax.swing.JComponent.getPreferredSize(JComponent.java:1650)
at javax.swing.BoxLayout.checkRequests(BoxLayout.java:483)
at javax.swing.BoxLayout.preferredLayoutSize(BoxLayout.java:300)
at javax.swing.plaf.basic.DefaultMenuLayout.preferredLayoutSize(DefaultMenuLayout.java:60)
at java.awt.Container.preferredSize(Container.java:1644)
at java.awt.Container.getPreferredSize(Container.java:1629)
at javax.swing.JComponent.getPreferredSize(JComponent.java:1652)
at javax.swing.JRootPane$RootLayout.layoutContainer(JRootPane.java:1001)
at java.awt.Container.layout(Container.java:1465)
at java.awt.Container.doLayout(Container.java:1454)
at java.awt.Container.validateTree(Container.java:1552)
at java.awt.Container.validateTree(Container.java:1558)
at java.awt.Container.validate(Container.java:1524)
at java.awt.Window.show(Window.java:947)
at java.awt.Component.show(Component.java:1546)
at java.awt.Component.setVisible(Component.java:1498)
at java.awt.Window.setVisible(Window.java:928)
at jmenu.JMenu2030$1.run(JMenu2030.java:15)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:225)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:616)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:286)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:191)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:186)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:178)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:139)

The following JCK tests fail:

api/javax_swing/JMenu/descriptions.html#set_is_getXXX[JMenu2030]
api/javax_swing/plaf/basic/BasicMenuItemUI/index.html#protected[BasicMenuItemUI0009]
api/javax_swing/plaf/basic/BasicMenuItemUI/index.html#public[BasicMenuItemUI0002]
api/javax_swing/plaf/basic/BasicMenuItemUI/index.html#public[BasicMenuItemUI0003]
api/javax_swing/plaf/basic/BasicMenuItemUI/index.html#public[BasicMenuItemUI0004]
api/javax_swing/plaf/basic/BasicMenuItemUI/index.html#protected[BasicMenuItemUI0009]
api/javax_swing/plaf/multi/MultiMenuItemUI/index.html#public[MultiMenuItemUI0006]
api/javax_swing/plaf/multi/MultiMenuItemUI/index.html#public[MultiMenuItemUI2007]
api/javax_swing/JTable/AccessibleJTable/AccessibleJTableCell/index.html#AccessibleComponent[AccessibleJTableCell0031]
api/javax_swing/plaf/multi/MultiMenuItemUI/index.html#public[MultiMenuItemUI0006]
api/javax_swing/plaf/multi/MultiMenuItemUI/index.html#public[MultiMenuItemUI2007]