applet2.java

java关于Applet的一些简单实例

import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import java.net.*;
public class Applet2 extends Applet implements MouseListener{
	Image image1,image2;
	URL url;
	String target;
	AppletContext context;
	public void init(){
		target=getParameter("target");
		try{
			url=new URL(getParameter("url"));
			
		}catch(Exception e){}
		image1=getImage(getDocumentBase(),getParameter("image1"));
		image2=getImage(getDocumentBase(),getParameter("image2"));
		context=getAppletContext();
		addMouseListener(this);
	}
	public void paint(Graphics g){
		g.drawImage(image1,0,0,getWidth(),getHeight(),this);
	}
	public void mouseEntered(MouseEvent e){
		getGraphics().drawImage(image2,0,0,getWidth(),getHeight(),this);
		context.showStatus("mouse enter");
	}
	public void mouseExited(MouseEvent e){
		getGraphics().drawImage(image1,0,0,getWidth(),getHeight(),this);
		context.showStatus("mouse exit");
	}
	public void mouseClicked(MouseEvent e){
		context.showDocument(url);
		context.showStatus("mouse click");
	}
	public void mousePressed(MouseEvent e){}
	public void mouseReleased(MouseEvent e){}

}