keytest.java

来自「简单实现键盘的控制」· Java 代码 · 共 42 行

package com.zhoutenghn;
import java.awt.*;
import java.awt.event.*;
public class KeyTest {

	public static void main(String[] args) {
       new KeyFrame().launch();
	}

}
class KeyFrame extends Frame {
	public void launch(){
		setSize(200,200);
		this.setBackground(Color.red);
		this.setLocation(300, 300);
		this.addKeyListener(new Keymoniter());
		this.addWindowListener(new Windowmoniter());
		setVisible(true);
	}
}
class Windowmoniter extends WindowAdapter{
	public void windowClosing(WindowEvent e){
		System.exit(0);
	}
}
class Keymoniter extends KeyAdapter {
	public void keyPressed(KeyEvent e){
		int keycode = e.getKeyCode();
		if (keycode == KeyEvent.VK_UP){
			System.out.println("up");
		} else if (keycode == KeyEvent.VK_DOWN){
			System.out.println("down");
		}else if (keycode == KeyEvent.VK_RIGHT){
			System.out.println("right");
		}else if (keycode == KeyEvent.VK_LEFT){
			System.out.println("left");
		}else {
			System.out.println("You didn't press the direction key!");
		}
	
	}
}