public class AnotherPointMain {
    public static void main(String args[]) {
        Point p1 = new Point();

        p1.x=10;
        p1.y=20;
        System.out.println("before: p1.x=" + p1.x +
			   ", p1.y=" + p1.y);
	Point p2 = p1;
        p2.x++;
        System.out.println("after: p2.x=" + p2.x +
			   ", p2.y=" + p2.y);
        System.out.println("after: p1.x=" + p1.x +
			   ", p1.y=" + p2.y);
    }
}