Line Translation 2D

/*
 * Translation.java
 * Created on April 17, 2007, 3:32 PM
 */

import java.awt.Color;
import java.awt.Graphics;
import javax.swing.JFrame;
/**
*
*/
public class Translation  extends JFrame{

private int width=400;
    private int height=400;
    private int x1=-100;
    private int y1=-100;
    private int x2=100;
    private int y2=100;
    private int dx=20;
    private int dy=20;
    public Translation() {
         setTitle("Line Translation");
         setSize(width,height);
         setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         setVisible(true);
    }
      public void paint(Graphics g) {
        g.fillRect(0,0,500,500);
        g.setColor(Color.RED);

g.drawLine(x1+200,200-y1,x2+200,200-y2);
             g.setColor(Color.GREEN);
                g.drawLine(x1+200+dx,200-y1+dy,x2+200+dx,200-y2+dy);
     
    }
      public static void main(String[] args) {
        // TODO code application logic here
    new Translation();
    }

}