import java.awt.*;

public class OffScr extends java.applet.Applet implements Runnable
{
	Thread t;
	int x = 0;
	Image ofscr;
	Graphics ofscr_g;

	public void init()
	{
		t = new Thread( this );
		t.start();
		ofscr = createImage( 300, 300 );
		ofscr_g = ofscr.getGraphics();
	}

	public void paint( Graphics g )
	{
		ofscr_g.setColor( Color.white );
		ofscr_g.fillRect( 0, 0, 300, 300 );
		ofscr_g.setColor( Color.black );
		ofscr_g.fillRect( x, 50, 200, 200 );
		g.drawImage( ofscr, 0, 0, null );
	}

	public void update( Graphics g )
	{
		paint( g );
	}

	public void run()
	{
		while(true){
			x++;
			try{
				Thread.sleep( 100 );
			}catch( InterruptedException e ) {}
			repaint();
		}
	}
}