键盘监听

package cn.rushangw.lesson03;

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

//键盘监听
public class TestKeyListener {
    public static void main(String[] args) {
        new KeyFrame();
    }
}

class KeyFrame extends Frame {
    public KeyFrame()  {
        setBackground(Color.PINK);
        setBounds(1,2,400,400);
        setVisible(true);
        addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
        addKeyListener(new KeyAdapter() {
            @Override
            public void keyPressed(KeyEvent e) {
                //获取键盘按下的是哪个,当前的ASCII码
                int keyCode = e.getKeyCode();
                System.out.println(keyCode);
                if(keyCode == KeyEvent.VK_UP){
                    System.out.println("你按下了上键");
                }
            }
        });
    }
}