imageload1.java

Java程序设计培训教程2

import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import java.applet.Applet;
/*类ImageLoad是Applet的子类*/
public class ImageLoad1 extends Applet implements WindowListener{
	/*声明一个Image对象，用于指明需要载入的图像*/
	Image imgObj;
	/*init()方法通过getImage方法获得需要载入的图像*/
	public void init(){
		imgObj = Toolkit.getDefaultToolkit().getImage("a012.jpg");
	}
	/*在paint方法中通过drawImage方法将上面载入的图像显示出来*/
	public void paint(Graphics g){
		g.drawImage(imgObj,0,0,this);
	}
	public static void main(String args[]){
		Frame frObj = new Frame("Loading Image!");
		ImageLoad1 classObj = new ImageLoad1();
		
		classObj.init();
		frObj.add("Center",classObj);
		frObj.addWindowListener(classObj);
		frObj.setSize(300,350);
		frObj.show();
	}
	/**重写windowClosing方法,用于实现系统的退出*/
	public void windowClosing(WindowEvent e){
		System.exit(0);
	}
	public void windowOpened(WindowEvent e){}
	public void windowIconified(WindowEvent e){}
	public void windowDeiconified(WindowEvent e){}
	public void windowClosed(WindowEvent e){}
	public void windowActivated(WindowEvent e){}
	public void windowDeactivated(WindowEvent e){}
}