public class UsePoint {
    public static void main(String[] args) {
        Point p1 = new Point();
        p1.x = 5;
        p1.y = -2;
        
        Point p2 = new Point();
        p2.x = 1;
        p2.y = 4;

        System.out.println(p1.x + ", " + p1.y);
        System.out.println(p2.x + ", " + p2.y);
        
        System.out.println(p1.distance(p2));
        
        p1.translate(-4, 1);  // 1, -1
        System.out.println(p1.x + ", " + p1.y);
        
        /*
        p1 becomes 'this'
        p2 becomes 'b'
        */
        
        //System.out.println(distance(p1, p2));
    }
/*    
    public static double distance(Point a, Point b) {
        int dx = a.x - b.x;
        int dy = a.y - b.y;
        
        double distance = Math.sqrt(dx*dx + dy*dy);
        return distance;
    }
*/
}