public static void main(String[] args) {
		RandConcentricCircles panel = new RandConcentricCircles();
		JFrame window = new JFrame("Concentric Circles");
		
		window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		window.add(panel);
		window.setSize(100, 100);
		window.setVisible(true);

	}