例8-7.java

用Java和XML建立试题库管理系统,试题库管理系统的设计

//example 8-7
import java.applet.Applet;
import java.awt.*;
import java.awt.image.*;
public class tt extends Applet
{
   Image img;
   public void init()
   {
   	 Dimension d=getSize();
   	 int w=d.width,h=d.height;
   	 int pix[]=new int[w*h];
   	 int index=0;
   	 for(int y=0;y<h;y++)
   	   for(int x=0;x<w;x++)
   	   {
   	     int red=(x|y)&0xff;
   	     int green=(x*4|y*4)*0xff;
   	     int blue=(x*6|y*8)*0xff;
   	     pix[index++]=(255<<24)|(red<<16)|(green<<8)|blue;
   	   }
   	 img=createImage(new MemoryImageSource(w,h,pix,0,w));
   }
   public void paint(Graphics g)
   {
   	  g.drawImage(img,0,0,this);
   }
}