/**
 * Title: PCCompositsion
 * Description: Point and Circle via Composition example
 * @author hollingd@cs.rpi.edu
 */

class Point {
	int x,y;

	// constructor - notice we can use this to get past
	//   the (silly) field name shadowing.
	Point( int x, int y) {
		this.x = x;
		this.y = y;
	}

	// a method that allows moving the point
	void MoveTo(int newx, int newy) {
		x = newx; y = newy;
	}

	// this is called by System.out.println
	//  (or anything that treats it as a String)
	public String toString() {
		return(x + "," + y );
	}
}


// A circle class is composed of a point (the center) and radius.
class Circle {
	Point center;
	int radius;

	// constructor
	Circle( int x, int y, int r) {
		center = new Point(x,y);
		radius = r;
	}

	// move the center of the circle
	// we need to call the point method.
	void MoveTo( int newx, int newy) {
		center.MoveTo(newx,newy);
	}

	// convert to a string
	public String toString() {
		return( "Center: " + center + " Radius: " + radius);
	}
}


// this class is for testing point and circle
public class PCComposition {

	public static void main(String[] args) {

		Circle c1 = new Circle(10,10,3);
		System.out.println(c1);

		c1.MoveTo(0,0);
		System.out.println(c1);
	}

}