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				   	   for(int x=0;x				   	   {
				   	     int red=(x|y)&0xff;
				   	     int green=(x*4|y*4)*0xff;
				   	     int blue=(x*6|y*8)*0xff;
				   	     pix[index++]=(255				   	   }
				   	 img=createImage(new MemoryImageSource(w,h,pix,0,w));
				   }
				   public void paint(Graphics g)
				   {
				   	  g.drawImage(img,0,0,this);
				   }
				}