keytest.java

java练习程序

import java.applet.*;
import java.awt.*;
import java.awt.event.*;
public class keyTest extends Applet implements KeyListener
{
	Button b=new Button("我在这里");
	public void init()
	{
		addKeyListener(this); //程序(容器)获得处理键盘事件的监视器
		add(b);
	}
	
	public void keyPressed(KeyEvent e)
	{
		if(e.getKeyCode()==KeyEvent.VK_A)//判断是否按下了a字符键
		{
			b.setBounds(50, 60, 100, 100);
			b.setBackground(Color.red);
		}
	}
	
	public void keyTyped(KeyEvent e)
	{	
	}
	
	public void keyReleased(KeyEvent e)
	{
	}
}