keyevent1.java

该原代码为＜Java编程基础、应用与实例＞的附盘代码

import java.awt.*;
import java.awt.event.*;
public class KeyEvent1 extends Frame{
  Label keyChar;
  Label keyCode;
  Label keyText;
  Label actionKey;
  TextField tf;
  public KeyEvent1(String title){
  	super(title);
  	setLayout(new GridLayout(5,1));
  	
  	keyChar=new Label("keyChar: ");
  	keyCode=new Label("keyCode: ");
  	keyText=new Label("keyText: ");
  	actionKey=new Label("actionKey: ");
    
    tf=new TextField();
  	
  	add(keyChar);
  	add(keyCode);
  	add(keyText);
  	add(actionKey);
  	add(tf);
  	tf.addKeyListener(new KeyHandler());
  }
  public static void main(String[] args){
    KeyEvent1 f=new KeyEvent1("Key 捞亥飘 贸府");
    f.setSize(200,200);
    f.setVisible(true);
  }
  class KeyHandler implements KeyListener{
  	public void keyPressed(KeyEvent e){
  	  keyCode.setText("keyCode: "+e.getKeyCode());
  	  keyText.setText("keyText: "+e.getKeyText(e.getKeyCode()));
  	  actionKey.setText("actionKey: "+e.isActionKey());
  	}
  	public void keyTyped(KeyEvent e){
  	  keyChar.setText("keyChar: "+e.getKeyChar());
    }
    public void keyReleased(KeyEvent e){}
  }  
}