GUI:TestKeyListener

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(100,100,200,300);
        setVisible(true);

        this.addKeyListener(new KeyAdapter() {
            @Override
            public void keyPressed(KeyEvent e) {
                int keyCode=e.getKeyCode();
                //记录每一个键盘操作对应的代码
                System.out.println(keyCode);

                //判断按下的是否为对应键
                if(keyCode==KeyEvent.VK_UP)
                System.out.println("KeyFrame.keyPressed");
            }
        });
    }
}