dragtest.java

这是清华大学编写的JAVA教材中所有题目的源代码！

import java.awt.*;
import java.awt.event.*;

class Test extends Frame implements MouseMotionListener
{
	TextField tf=new TextField(20);
	Button btn1=new Button("Button");

	public Test() 
	{
		btn1.addMouseMotionListener(this);
		setLayout(new FlowLayout());
		add(btn1);
		add(tf);

		setSize(400,300);
		setVisible(true);		
	}

	public void mouseDragged (MouseEvent e)
	{
		Point p=btn1.getLocation();
		btn1.setLocation(p.x+e.getX(),p.y+e.getY());
		
		tf.setText("x="+(p.x)+" y="+(p.y));
	}
	
	public void mouseMoved(MouseEvent e)
	{
	}
		
	public static void main(String args[])
	{
		new Test();
	}
}