Question

Hi, I was wondering if I could get some help on a java program that I am supposed to be writing. The code that I have can be found below. Thanks in advance.

Here are the requirements of the code

       1) Create 3 cube objects. The size of each of the cubes
       should be input from the keyboard
       (hint: study the code below)
    2) Print the Side length, Surface area and Volume to the
       users screen (console) for each of the cubes
    3) The program should catch input error exceptions and
      deal with them in a reasonable manner

import java.util.Scanner;

import java.io.*;

public class Cube {
    // Hint: put your class variables and objects here

    // For example the Scanner statement as a 'static' object

    // Create the getLength() method to accept input and verify it is numeric

    // Create the calculateSurfaceArea() method

    // Create the calculateVolume() method
    

    /**
     * main() -- creates 3 instances of Cube and calculates the surface area and volume
     */
    public static void main(String args[]) throws IOException {
        int length;

        // HINT: input the side from the keyboard and check for errors and exceptions 
        Cube cube1 = new Cube(10);
        System.out.println("Side length of cube1 is " + cube1.getLength());
        System.out.println("Surface Area of cube1 is " + cube1.calculateSurfaceArea());
        System.out.println("Volume of cube1 is " +      cube1.calculateVolume());

        // Hint - add two more cube instances

        // Don't forget to close your Scanner object  

   } // main()
} // Cube

Answer 1

CODE IN JAVA:

Cube.java file:

import java.io.IOException;

import java.util.Scanner;

public class Cube {

private double length;

public Cube(double length) {

this.length = length ;

}

public double getLength() {

return this.length;

}

public double calculateSurfaceArea() {

return 6*this.length*this.length;

}

public double calculateVolume() {

return this.length*this.length*this.length;

}

public static void main(String[] args) throws IOException{

// TODO Auto-generated method stub

Scanner sc = new Scanner(System.in);

double length1, length2, length3 ;

try {

//taking lengths of the cube as input from the user and creating objects to the Cube class

System.out.print("Enter length of cube1:");

length1 = sc.nextDouble();

Cube c1 = new Cube(length1);

System.out.print("Enter length of cube2:");

length2 = sc.nextDouble();

Cube c2 = new Cube(length2);

System.out.print("Enter length of cube3:");

length3 = sc.nextDouble();

Cube c3 = new Cube(length3);

//displaying the details of the cubes

System.out.println("\nDetails of Cube1:");

System.out.println("Length:"+c1.getLength());

System.out.println("Surface Area:"+c1.calculateSurfaceArea());

System.out.println("Volume:"+c1.calculateVolume());

System.out.println("\nDetails of Cube2:");

System.out.println("Length:"+c2.getLength());

System.out.println("Surface Area:"+c2.calculateSurfaceArea());

System.out.println("Volume:"+c2.calculateVolume());

System.out.println("\nDetails of Cube3:");

System.out.println("Length:"+c3.getLength());

System.out.println("Surface Area:"+c3.calculateSurfaceArea());

System.out.println("Volume:"+c3.calculateVolume());

}

catch(Exception e) {

System.out.println(e);

}

}

}

OUTPUT: