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java鼠标控制小球代码

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java鼠标控制小球代码，在用的时候把项目名和类名改成自己的就可以啦

package ball;

import java.awt.*;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionListener;
public class myball {

	public static void main(String[] args) {
		 Frame w = new Frame();
		   w.setSize(300,400);
		   
		   MyPanel mp = new MyPanel();
		   w.add(mp);
		   
		   w.addMouseMotionListener(mp);
		   mp.addMouseMotionListener(mp);
		   
		   w.show();
		}
	}
class MyPanel extends Panel implements MouseMotionListener{
	int x=30;
	int y=30;
	public void paint(Graphics g) {
		g.fillOval(x,y,20,20);
	}
	@Override
	public void mouseDragged(MouseEvent arg0) {
		//鼠标拖动
		x=arg0.getX();
		y=arg0.getY();
		repaint();
		
	}
	@Override
	public void mouseMoved(MouseEvent arg0) {
		//TODO Auto-generated method stub
	}
}