multilistener.java

来自「针对越来越多的用户喜欢JAVA」· Java 代码 · 共 54 行

import java.awt.*;
import java.awt.event.*;
public class MultiListener implements MouseListener,MouseMotionListener,WindowListener
{
	private Frame f;
	private TextField tf;
	public static void main(String args[])
	{
		MultiListener ml = new MultiListener();
                ml.go();
	} 
	public void go()
	{
		Frame f = new Frame("多个监听者");
		f.add( new Label("单击和拖动鼠标"), "North" );
       		tf = new TextField(30);
       		f.add( tf, "South");
       		f.addMouseListener(this);
		f.addMouseMotionListener(this);
		f.addWindowListener(this);
		f.resize(200,200);
		f.show();
	}
	public void mouseDragged(MouseEvent e)
	{	
	    String s = "Mouse dragging : X = " + e.getX() + " Y = " + e.getY();
        	tf.setText(s); 
	}
	public void mouseMoved(MouseEvent e){}
   	public void mouseEntered(MouseEvent e)
	{	
		String s = "The mouse Entered";
		tf.setText(s);
	}
	public void mouseExited(MouseEvent e)
	{
		String s = "The mouse Exited";
		tf.setText(s);
	}
	public void mouseClicked(MouseEvent e){}
	public void mousePressed(MouseEvent e){}
	public void mouseReleased(MouseEvent e){}
	public void windowClosing(WindowEvent e)
	{
        	System.exit(0);
    	}
	public void windowClosed(WindowEvent e){}
	public void windowOpened(WindowEvent e){}
	public void windowIconified(WindowEvent e){}
	public void windowDeiconified(WindowEvent e){}
	public void windowDeactivated(WindowEvent e){}
	public void windowActivated(WindowEvent e){}
}