用java将二进制黑白像素点，画在正方形中

import java.applet.*;
import java.awt.*;
import java.awt.geom.*;
public class Text extends Applet
{
public void paint(Graphics g)
{
g.drawRect(0 ,0, 28,28);//画正方形
g.drawLine(3, 3, 9, 3);