Java KeyListener是否停止使用动作或鼠标Listener？

我想添加KeyListener以通过键盘获取输入，所以我添加了KeyListener并实现了它的方法，但当我运行它并按下任何键时，它都可以工作，但在控制台中它会编写如下内容：

  Exception in thread "AWT-EventQueue-0" java.lang.UnsupportedOperationException: Not supported yet.
at Calculator.keyReleased(Calculator.java:520)
at java.awt.Component.processKeyEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Window.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.KeyboardFocusManager.redispatchEvent(Unknown Source)
at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(Unknown Source)
at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(Unknown Source)
at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(Unknown Source)
at java.awt.DefaultKeyboardFocusManager.dispatchEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$200(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)

在这个keylistener正常工作后，当我点击任何按钮时，它停止工作，我按下了键，但什么也没发生。 我的代码：

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你的程序引发了一个异常

at Calculator.keyReleased(Calculator.java:520)

它还引发了以下类型的异常：

java.lang.UnsupportedOperationException: Not supported yet.

因此，您似乎正在调用

Calculator.java

文件第520行中的一个例程，该例程目前还不受支持

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如果您可以将方法发布到中断的位置，然后标记中断的行，我们可以进一步帮助您

如果你想修复你的代码，为什么只显示一条错误消息呢？为了有效地帮助你，我们需要上面显示的堆栈跟踪和生成它的代码。这里是我的keylistener方法代码：public void keyPressed（KeyEvent e）{try{switch（e.getKeyCode（））{//my cases default:}catch（UnsupportedOperationException ex）{}}@Override public void keyReleased（KeyEvent e）{抛出新的UnsupportedOperationException（“尚未支持”）；//第520行}@SudhirYadav编辑您的问题。这样您的代码的格式会更好

java.lang.UnsupportedOperationException: Not supported yet.