/*
 * Lecture7.java 1.0 04/03/22
 *
 * Example for OOP
 *
 */
package dk.itu.oop.lecture7;

class Lecture7{
	public static void main(String args[]) {
		System.out.println("Starting Lecture7...");
		PointAndLineUser plu = new PointAndLineUser();
		plu.MoveAll();
	}
}

class Point {
   private int x;
   private int y;
   public Point(int x, int y){
      this.x = x;
      this.y = y;
   }
   public void move(int dx, int dy){
      x+=dx;
      y+=dy;
   }
}

class Line extends Point {
   private int x;
   private int y;
   public Line(int x1,int y1, int x2, int y2){
      super(x1,x2);
      this.x = x2;
      this.y = y2;
   }
   public void move(int dx, int dy){
      super.move(dx,dy);
      x += dx;
      y += dy;
   }
}

class PointAndLineUser {
   Point p;
   Line l;

   PointAndLineUser(){
      p = new Point(3,4);
      l = new Line( 10, 20, 30, 40 );
   }

   void MoveAll(){
      p.move(7,1);
      l.move(3,6);
   }
}