class Box {
    double w = 0; //width
    double h = 0; //height
    double d = 0; //depth
    double v = 0; //volume
}
public class Main {
  public static void main(String[] args) {
    Box Box1   = new Box();
    Box1.w = 10;
    Box1.h = 15;
    Box1.d = 20;
    Box1.v = Box1.w * Box1.h * Box1.d;

    Box Box2   = new Box();
    Box2.w = 15;
    Box2.h = 20;
    Box2.d = 15;
    Box2.v = Box2.w * Box2.h * Box2.d;

    System.out.println("Об'єм коробки 1 " + Box1.v);
    System.out.println("Об'єм коробки 2 " + Box2.v);
  }