import java.awt.Graphics;
import javax.swing.JFrame;

public class Eksam1 extends JFrame {
	int x1 = 0;
	int y1 = 0;
	int x2 = 0;
	int y2 = 0;

	int X = 0;
	int dx = 0;

	public static void main(String[] args) {
		new Eksam1();
	}

	Eksam1() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setSize(400, 205);
		setResizable(false);
		show();
		while (true) {
			try {
				Thread.sleep(100);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
			dx += 10;
			if (dx > 360)
				dx = 0;
			repaint();
		}
	}

	public void paint(Graphics g) {
		g.clearRect(0, 0, 400, 205);
		for (X = 0; X < 360; X += 10) {
			x1 = X;
			x2 = x1 + 10;
			y1 = (int)(Math.sin(Math.toRadians(X + dx)) * 80 + 110);
			y2 = (int)(Math.sin(Math.toRadians(X + dx + 10)) * 80 + 110);
			g.drawLine(x1 + 10, y1, x2 + 10, y2);
		}
	}
}