textmultilistener.java

TextMultiListener是实现javaGUI事件监听的示例程序!

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


public class TextMultiListener implements MouseMotionListener, MouseListener
{
	Frame f=new Frame("TextMultiListener");
	TextField tf=new TextField(30);
	
	public TextMultiListener()
	{
		Label label=new Label("请按下鼠标左键并拖动！");
		f.add(label,"North");
		f.add(tf,"South");
		f.setBackground(new Color(98,159,200));
		f.addMouseListener(this);
		f.addMouseMotionListener(this);
		f.setSize(300,300);
		f.setVisible(true);
	}
	
	public static void main(String args[])
	{
		TextMultiListener t=new TextMultiListener();
	}
	public void mouseDragged(MouseEvent e)
	{
		String s="鼠标拖动到位置：("+e.getX()+","+e.getY()+")";
		tf.setText(s);
	}
	public void mouseEntered(MouseEvent e)
	{
		tf.setText("鼠标进入区域！");
	}
	public void mouseExited(MouseEvent e)
	{
		tf.setText("鼠标移出区域！");
	}
	public void mouseMoved(MouseEvent e){}
	public void mousePressed(MouseEvent e){}
	public void mouseClicked(MouseEvent e){}
	public void mouseReleased(MouseEvent e){}
	//public void mouseExisted(MouseEvent e){}
	
}