testmediatracker.java

java初学者的简单的小程序应用

import java.awt.*;
import java.awt.image.*;
import java.applet.*;

public class testMediaTracker extends Applet{
private Image img1;
private Image img2;
private Image img3;
private Image img4;

public void init(){

img1=getImage(getCodeBase(),"img1.gif");
img2=getImage(getCodeBase(),"img2.gif");
img3=getImage(getCodeBase(),"img3.gif");
img4=getImage(getCodeBase(),"img4.gif");



MediaTracker mt= new MediaTracker(this);
mt.addImage(img1,1);
mt.addImage(img2,2);
mt.addImage(img3,3);
mt.addImage(img4,4);
try{
    mt.waitForAll();
}
  catch(Exception e){}



}


public void paint(Graphics g){

g.drawImage(img1,0,0,200,200,this);
g.drawImage(img2,200,0,200,200,this);
g.drawImage(img3,0,200,200,200,this);
g.drawImage(img4,200,200,200,200,this);

Font f=new Font("Monospaced",Font.ITALIC,48);
g.setFont(f);
g.setColor(Color.WHITE);
g.drawString("this is a test",50,300);
}
}