2.10 键盘监听

package com.gui.lesson03;

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

public class TestKeyListener {
    public static void main(String[] args) {
        new Keyframe();
    }
}
class Keyframe extends frame {
    public Keyframe(){
        setBounds(1,2,300,400);
        setVisible(true);
        this.addKeyListener(new KeyAdapter() {
            //键盘按下
            @Override
            public void keyPressed(KeyEvent e) {
                //获得键盘按下的键是哪个键
                int keyCode=e.getKeyCode();
                System.out.println(keyCode);
                if (keyCode == KeyEvent.VK_UP) {
                    System.out.println("你按下了向上键");
                }
                //根据按下不同操作，产生不同结果
            }
        });
    }