Treasurer

import java.util.Scanner;

public class Treasurer {

    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in); // initialize Scanner object

        ZysCube z1, z2, z3; // declare ZysCube objects


        System.out.print("Enter length of side of the cube #1: ");
        double cubeSide = scan.nextDouble();
        while (cubeSide <= 0.0) { // Validation loop - makes sure user enters only positive numbers.
            System.out.println("Invalid length of side entered.");
            System.out.print("Enter length of side of the cube #1: ");
            cubeSide = scan.nextDouble();
        }


        System.out.print("Enter density of the cube #1: ");
        double cubeDensity = scan.nextDouble();
        while (cubeDensity <= 0.0) {
            System.out.println("Invalid density entered.");
            System.out.print("Enter density of the cube #1: ");
            cubeDensity = scan.nextDouble();
        }

        z1 = new ZysCube(cubeSide, cubeDensity); // initialize z1 ZysCube object with
        // user-entered numbers

        System.out.print("Enter length of side of the cube #2: ");
        cubeSide = scan.nextDouble();
        while (cubeSide <= 0.0) {
            System.out.println("Invalid length of side entered.");
            System.out.print("Enter length of side of the cube #2: ");
            cubeSide = scan.nextDouble();
        }


        System.out.print("Enter density of the cube #2: ");
        cubeDensity = scan.nextDouble();
        while (cubeDensity <= 0.0) {
            System.out.println("Invalid density entered.");
            System.out.print("Enter density of the cube #2: ");
            cubeDensity = scan.nextDouble();
        }

        z2 = new ZysCube(cubeSide, cubeDensity); // initialize z2 ZysCube object with
        // user-entered numbers

        System.out.print("Enter length of side of the cube #3: ");
        cubeSide = scan.nextDouble();
        while (cubeSide <= 0.0) {
            System.out.println("Invalid length of side entered.");
            System.out.print("Enter length of side of the cube #3: ");
            cubeSide = scan.nextDouble();
        }

        System.out.print("Enter density of the cube #3: ");
        cubeDensity = scan.nextDouble();
        while (cubeDensity <= 0.0) {
            System.out.println("Invalid density entered.");
            System.out.print("Enter density of the cube #3: ");
            cubeDensity = scan.nextDouble();
        }

        z3 = new ZysCube(cubeSide, cubeDensity); // initialize z3 ZysCube object with
        // user-entered numbers


        // Call the methods of ZysCube on each ZysCube object, z1, z2, z3
        System.out.printf("The area and mass of z1 is %,.2fcm, %,.2fg\n", z1.getCubeArea(),
                z1.getCubeMass());
        System.out.printf("The area and mass of z2 is %,.2f, %,.2fg\n", z2.getCubeArea(),
                z2.getCubeMass());
        System.out.printf("The area and mass of z3 is %,.2f, %,.2fg\n", z3.getCubeArea(),
                z3.getCubeMass());
    }
}