异常情况是这样的
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:678)
at java.awt.Container.addNotify(Container.java:2493)
at javax.swing.JComponent.addNotify(JComponent.java:4381)
at javax.swing.plaf.metal.MetalTitlePane.addNotify(MetalTitlePane.java:2
23)
at java.awt.Container.addNotify(Container.java:2493)
at javax.swing.JComponent.addNotify(JComponent.java:4381)
at java.awt.Container.addNotify(Container.java:2493)
at javax.swing.JComponent.addNotify(JComponent.java:4381)
at javax.swing.JRootPane.addNotify(JRootPane.java:676)
at java.awt.Container.addNotify(Container.java:2493)
at java.awt.Window.addNotify(Window.java:458)
at java.awt.Frame.addNotify(Frame.java:487)
at java.awt.Window.pack(Window.java:476)
at sun.awt.im.CompositionArea.<init>(CompositionArea.java:71)
at sun.awt.im.CompositionAreaHandler.createCompositionArea(CompositionAr
eaHandler.java:56)
at sun.awt.im.CompositionAreaHandler.inputMethodTextChanged(CompositionA
reaHandler.java:169)
at sun.awt.im.CompositionAreaHandler.processInputMethodEvent(Composition
AreaHandler.java:144)
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:678)
at java.awt.Container.addNotify(Container.java:2493)
at javax.swing.JComponent.addNotify(JComponent.java:4381)
at javax.swing.plaf.metal.MetalTitlePane.addNotify(MetalTitlePane.java:2
23)
at java.awt.Container.addNotify(Container.java:2493)
at javax.swing.JComponent.addNotify(JComponent.java:4381)
at java.awt.Container.addNotify(Container.java:2493)
at javax.swing.JComponent.addNotify(JComponent.java:4381)
at javax.swing.JRootPane.addNotify(JRootPane.java:676)
at java.awt.Container.addNotify(Container.java:2493)
at java.awt.Window.addNotify(Window.java:458)
at java.awt.Frame.addNotify(Frame.java:487)
at java.awt.Window.pack(Window.java:476)
at sun.awt.im.CompositionArea.<init>(CompositionArea.java:71)
at sun.awt.im.CompositionAreaHandler.createCompositionArea(CompositionAr
eaHandler.java:56)
at sun.awt.im.CompositionAreaHandler.inputMethodTextChanged(CompositionA
reaHandler.java:169)
at sun.awt.im.CompositionAreaHandler.processInputMethodEvent(Composition
AreaHandler.java:144)
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Menu所产生的事件未初始化
有可能是里面调用了一个未初始化HashTable的get()方法
这是什么错误啊
是不是我在TEXTAREA里添加了接收弹出式菜单的事件才导致这种情况发生的啊,但为什么只有输入汉字会出现这种情况,而输入英文的时候就不存在呢