Construct clone of an object

[VelMurugan]

Construct clone of an object

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class Box {
  double width;

  double height;

  double depth;

  Box(Box ob) {
    width = ob.width;
    height = ob.height;
    depth = ob.depth;
  }

  Box(double w, double h, double d) {
    width = w;
    height = h;
    depth = d;
  }

  Box() {
    width = -1;
    height = -1;
    depth = -1;
  }

  Box(double len) {
    width = height = depth = len;
  }

  double volume() {
    return width * height * depth;
  }
}

class BoxWeight extends Box {
  double weight;

  BoxWeight(double w, double h, double d, double m) {
    width = w;
    height = h;
    depth = d;
    weight = m;
  }
}

class DemoBoxWeight {
  public static void main(String args[]) {
    BoxWeight mybox1 = new BoxWeight(10, 20, 15, 34.3);
    BoxWeight mybox2 = new BoxWeight(2, 3, 4, 0.076);
    double vol;

    vol = mybox1.volume();
    System.out.println(vol);
    System.out.println(mybox1.weight);
    System.out.println();

    vol = mybox2.volume();
    System.out.println(vol);
    System.out.println(mybox2.weight);
  }
}