//
//	Dynamic applets
//		Move a ball down vertically

import java.awt.*;
import java.applet.*;

public class MoveBall extends Applet implements Runnable
{
	Thread my = null;
	int flag = 0;

	public void start()
	{
		my = new Thread(this);
		my.start();
	}
	public void run()
	{
		while(true)
		{
			for(flag=0; flag<7; flag++)
			{
				repaint();
				try
				{
					my.sleep(1000);
				}
				catch(InterruptedException e)
				{ }
			}
		}
	}
	public void stop()
	{
		my.stop();
		my = null;
	}
	public void paint(Graphics g)
	{
		if(flag == 0)
		{
			g.setColor(Color.blue);
			g.fillOval(50, 50, 100, 100);
		}
		if(flag == 1)
		{
			g.setColor(Color.blue);
			g.fillOval(50, 100, 100, 100);
		}
		if(flag == 2)
		{
			g.setColor(Color.blue);
			g.fillOval(50, 150, 100, 100);
		}
		if(flag == 3)
		{
			g.setColor(Color.blue);
			g.fillOval(50, 200, 100, 100);
		}
		if(flag == 4)
		{
			g.setColor(Color.blue);
			g.fillOval(50, 250, 100, 100);
		}
		if(flag == 5)
		{
			g.setColor(Color.blue);
			g.fillOval(50, 300, 100, 100);
		}
		if(flag == 6)
		{
			g.setColor(Color.blue);
			g.fillOval(50, 350, 100, 100);
		}
	}
}