import java.awt.Point;

public class Call_by_Value3 {

	public static void main(String[] args) {
		Point p1 = new Point(0, 0);
		Point p2 = new Point(100, 100);
		System.out.println("p1: " + p1.x + "|" + p1.y);	// p1: 0|0
		System.out.println("p2: " + p2.x + "|" + p2.y);	// p2: 100|100
		changePointValue(p1, p2);
		System.out.println("nach Methodendurchlauf:");
		System.out.println("p1: " + p1.x + "|" + p1.y);	// p1: 50|50
		System.out.println("p2: " + p2.x + "|" + p2.y);	// p2: 100|100
	}
	
	private static void changePointValue(Point pp1, Point pp2){
		System.out.println("Innerhalb changePointValue()");
		pp1.x = 50;
		pp1.y = 50;
		System.out.println("nach Wertezuweisung:");
		System.out.println("pp1: " + pp1.x + "|" + pp1.y);	// p1: 50|50
		System.out.println("pp2: " + pp2.x + "|" + pp2.y);	// p2: 100|100
		Point temp = pp1;
		pp1 = pp2;
		pp2 = temp;
		System.out.println("nach Referenztausch:");			
		System.out.println("pp1: " + pp1.x + "|" + pp1.y);	// p1: 100|100
		System.out.println("pp2: " + pp2.x + "|" + pp2.y);	// p2: 50|50
	}
}