望各位大侠帮忙？？？？？
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at java.util.Hashtable.get(Hashtable.java:336)
at javax.swing.KeyboardManager.registerMenuBar(KeyboardManager.java:263)
at javax.swing.JMenuBar.addNotify(JMenuBar.java:679)
at java.awt.Container.addNotify(Container.java:2500)
at javax.swing.JComponent.addNotify(JComponent.java:4469)
at javax.swing.plaf.metal.MetalTitlePane.addNotify(MetalTitlePane.java:223)
at java.awt.Container.addNotify(Container.java:2500)
at javax.swing.JComponent.addNotify(JComponent.java:4469)
at java.awt.Container.addNotify(Container.java:2500)
at javax.swing.JComponent.addNotify(JComponent.java:4469)
at javax.swing.JRootPane.addNotify(JRootPane.java:680)
at java.awt.Container.addNotify(Container.java:2500)
at java.awt.Window.addNotify(Window.java:466)
at java.awt.Frame.addNotify(Frame.java:501)
at java.awt.Window.pack(Window.java:484)
at sun.awt.im.CompositionArea.<init>(CompositionArea.java:71)
at sun.awt.im.CompositionAreaHandler.createCompositionArea(CompositionAreaHandler.java:56)
at sun.awt.im.CompositionAreaHandler.inputMethodTextChanged(CompositionAreaHandler.java:169)
at sun.awt.im.CompositionAreaHandler.processInputMethodEvent(CompositionAreaHandler.java:144)
at sun.awt.im.InputMethodContext.dispatchEvent(InputMethodContext.java:175)
at java.awt.Component.dispatchEventImpl(Component.java:3902)
at java.awt.Container.dispatchEventImpl(Container.java:2024)
at java.awt.Component.dispatchEvent(Component.java:3803)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at java.util.Hashtable.get(Hashtable.java:336)
at javax.swing.KeyboardManager.registerMenuBar(KeyboardManager.java:263)
at javax.swing.JMenuBar.addNotify(JMenuBar.java:679)
at java.awt.Container.addNotify(Container.java:2500)
at javax.swing.JComponent.addNotify(JComponent.java:4469)
at javax.swing.plaf.metal.MetalTitlePane.addNotify(MetalTitlePane.java:223)
at java.awt.Container.addNotify(Container.java:2500)
at javax.swing.JComponent.addNotify(JComponent.java:4469)
at java.awt.Container.addNotify(Container.java:2500)
at javax.swing.JComponent.addNotify(JComponent.java:4469)
at javax.swing.JRootPane.addNotify(JRootPane.java:680)
at java.awt.Container.addNotify(Container.java:2500)
at java.awt.Window.addNotify(Window.java:466)
at java.awt.Frame.addNotify(Frame.java:501)
at java.awt.Window.pack(Window.java:484)
at sun.awt.im.CompositionArea.<init>(CompositionArea.java:71)
at sun.awt.im.CompositionAreaHandler.createCompositionArea(CompositionAreaHandler.java:56)
at sun.awt.im.CompositionAreaHandler.inputMethodTextChanged(CompositionAreaHandler.java:169)
at sun.awt.im.CompositionAreaHandler.processInputMethodEvent(CompositionAreaHandler.java:144)
at sun.awt.im.InputMethodContext.dispatchEvent(InputMethodContext.java:175)
at java.awt.Component.dispatchEventImpl(Component.java:3902)
at java.awt.Container.dispatchEventImpl(Container.java:2024)
at java.awt.Component.dispatchEvent(Component.java:3803)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
楼主【struts_spring_hibern】截止到2008-06-23 11:31:57的历史汇总数据(不包括此帖)：
发帖数:2 发帖分:40
结贴数:0 结贴分:0
未结数:2 未结分:40
结贴率:0.00 % 结分率:0.00 %
如何结贴请参考这里：http://topic.csdn.net/u/20080501/09/ef7ba1b3-6466-49f6-9d92-36fe6d471dd1.html
因为它是运行期Java自己抛出的错误
你的仔细看你的代码
不要太在意
也许某个漫不经心的时候才能发现该错误