java awt处理keypress事件示例，awtkeypress,package cn.o

java awt处理keypress事件示例，awtkeypress,package cn.o

package cn.outofmemory.snippets.desktop;import java.awt.BorderLayout;import java.awt.Component;import java.awt.Frame;import java.awt.TextArea;import java.awt.event.KeyAdapter;import java.awt.event.KeyEvent;public class KeyListener {  public static void main(String[] args) {      // Create frame with specific title      Frame frame = new Frame("Example Frame");      // Create a component to add to the frame; in this case a text area with sample text      Component textArea = new TextArea("You pressed []: \n");      textArea.addKeyListener(new KeyAdapter() {      public void keyPressed(KeyEvent evt) {          TextArea source = (TextArea)evt.getSource();          source.setText("You pressed [" + evt.getKeyText(evt.getKeyCode()) +"] : ");      }      });      // Add the components to the frame; by default, the frame has a border layout      frame.add(textArea, BorderLayout.NORTH);      // Show the frame      int width = 300;      int height = 300;      frame.setSize(width, height);      frame.setVisible(true);  }}