package com.at221;

import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;

import javax.swing.JFrame;

public class TestKey {
    public static void main(String[] args) {
        JFrame f = new JFrame();
        f.addKeyListener(new MyKeyListener());
        f.setVisible(true);
        
    
        f.setSize(300, 300);
    }    
}

class MyKeyListener extends KeyAdapter{
    public void keyTyped(KeyEvent e) {//当键盘敲击某个按键时产生的事件：
        System.out.println(e.getKeyChar());
    }
    public void keyPressed(KeyEvent e) {//当键盘按下某个键产生的事件;
        
//        System.out.println("hello!");
    }
    public void keyReleased(KeyEvent e) {//当键盘上的某个按键被释放时产生的时间;
//        System.out.println("byebye!!!");
    }
}