code: class Point {
     protected int x, y;
     public Point() { this(0); }
     public Point(int x) { this(x, 0); }
     public Point(int x, int y) { this.x = x; this.y = y; }
     public Point(Point p) { this(p.x, p.y); }
     public int getX() { return this.x; }
     public int getY() { return this.y; }
     public void setX(int x) { this.x = x; }
     public void setY(int y) { this.y = y; }
     public void print() { System.out.println("Point x: " + this.x + " y: " + this.y); }
  }
  
  class Circle extends Point {
     private int r;
     public Circle(Point p) { this(p, 0); }
     public Circle(Point p, int r) { super(p); this.r = r; }
     public Circle() { this(0); }
     public Circle(int x) { this(x, 0); }
     public Circle(int x, int y) { this(x, y, 0); }
     public Circle(int x, int y, int r) { super(x, y); this.r = r; }
     public Circle(Circle c) { this(c.x, c.y, c.r); }
     public int getR() { return this.r; }
     public void setR(int r) { this.r = r; }
     public void print() { System.out.println("Circle x: " + this.x + " y: " + this.y + " r: " + this.r); }
  }
  
  public class test {
    public static void main(String args[]) {
      Point p = new Point();
      Point c = new Circle();
      p.print();
      c.print();
    }
  }
  