public class Line {
	private EndPoint p1, p2;
	
	private class EndPoint extends Point {
		public void move(int dx, int dy){
			p1.singleMove(dx,dy);
			p2.singleMove(dx,dy);
		}
		private void singleMove(int dx,int dy){
			super.move(dx,dy);
		}
		private EndPoint(Point p){
			super(p.getX(),p.getY());
		}
		public String toString(){
			return "End"+super.toString();
		}
	}
	
	public Line(Point start, Point end){
		p1 = new EndPoint(start);
		p2 = new EndPoint(end);
	}
	
	public Point getStart(){
		return p1;
	}
	
	public Point getEnd(){
		return p2;
	}
	
	public void move(int dx, int dy){
		p1.move(dx,dy);
	}
	
	public String toString(){
		return "Line("+p1.toString()+","+p2.toString()+")";
	}
}