import java.applet.*;import java.awt.*;public class Rect extends Applet{public void init() { }  public void paint(Graphics g) {Insets insets=this.insets();  int x=0,y=0;  int w=size().width-insets.left-insets.right;  int h=size().height-insets.top-insets.bottom;  g.setColor(Color.red);  while(w>0&&h>0)  {g.clearRect(x++,y++,w,h);   g.fillRect(x++,y++,w-2,h-2);   w-=4;   h-=4;  } }}