import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.geom.Line2D;
import java.util.Random;
import javax.swing.Timer;

import javax.swing.JFrame;
import javax.swing.JPanel;


public class ScreenSaver extends JFrame {

	public static void main(String[] args)
	{

		ScreenSaver ss = new ScreenSaver();
		ss.setDefaultCloseOperation(EXIT_ON_CLOSE);
	}

	public ScreenSaver()
	{
		super("Screen Saver");
		setSize(800,600);
		ReCanvas();
		setVisible(true);
	}
	public void ReCanvas()
	{
		SPane spane = new SPane();

		setContentPane(spane);
		repaint();
		spane.repaint();

		System.out.println("ReCanvas'd");

	}
	public class SPane extends JPanel
	{
		Random r = new Random();
		int lineCount = 0;
		Timer t;
		public SPane()
		{
			super();
			t = new Timer(1000,new ActionListener() {

				@Override
				public void actionPerformed(ActionEvent e) {
					// TODO Auto-generated method stub
					SPane.this.repaint();
				}
			});
			t.start();



		}

		public void paintComponent(Graphics g)
		{
			if (lineCount >= 100)
			{
				t.stop();
				ScreenSaver.this.ReCanvas();
				return;
			}
			System.out.println(lineCount);
			Graphics2D g2d = (Graphics2D)g;

			Line2D.Double l2d = new Line2D.Double(
					r.nextInt(getWidth()+1),
					r.nextInt(getHeight()+1),
					r.nextInt(getWidth()+1),
					r.nextInt(getHeight()+1)
			);
			g2d.setColor(new Color(r.nextInt(256),r.nextInt(256),r.nextInt(256)));
			g2d.setStroke(new BasicStroke(r.nextInt(20)+1));
			g2d.draw(l2d);
			++lineCount;
		}
	}
}