// Client program to explore references
import java.awt.*;

public class References { 
    public static void main(String[] args) {
        int a = 4;
        int b = a;
        a = 7;
        
        System.out.println("a = " + a);
        System.out.println("b = " + b);   
        
        Point p = new Point(1, 2);
        Point q = p;
        p = new Point(3, 4);
        System.out.println("p = " + p);
        System.out.println("q = " + q);
       
        Point[] points = new Point[5];
        for (int i = 0; i < points.length; i++) {
            points[i] = new Point(i, i);
        }
        Point r = points[2];
    }
}