Java Program to find a cube of an N given numbers.

Java / java programming

In this post, we will write a two java program to find the cube of the numbers upto given an integer using For Loop and While Loop. Program will find the cude of first N number using for loop and while loop.

To understand these programs you should have knowledge of following concepts.

For Loop
While Loop

How the program will work?

First of all, we will accept the number from user.
Now using loop we will calculate the cube of first numbers.

Example:

Input:
Enter the number: 6
Output:
Number is : 1 and cube of 1 is : 1
Number is : 2 and cube of 2 is : 8
Number is : 3 and cube of 3 is : 27
Number is : 4 and cube of 4 is : 64
Number is : 5 and cube of 5 is : 125
Number is : 6 and cube of 6 is : 216

Example 1: Program to Find cube of a first N Number using For Loop

This Java program enable the user to enter an integer value. Then this java program will calculates cube of the First N number and display. To do this program is going to use for loop.

import java.util.Scanner;

public class cube_of_n_numbers {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.print("Enter the number: ");
        int num = sc.nextInt();

        for (int i=1;i<=num;i++){
            System.out.println("Number is : "+i+" and cube of "+i+" is : "+(i*i*i));
        }
    }
}

Output:

Enter the number: 5
Number is : 1 and cube of 1 is : 1
Number is : 2 and cube of 2 is : 8
Number is : 3 and cube of 3 is : 27
Number is : 4 and cube of 4 is : 64
Number is : 5 and cube of 5 is : 125

Example 2: Program to Find cube of a first N Number using while loop

This Java Program is same as above. But this time, we are creating a different technique to calculate the cube of the first N number. This java program using while Loop to calculate the cube.

import java.util.Scanner;
public class cube_of_n_numbers {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.print("Enter the number: ");
        int num = sc.nextInt();
        int i=1;

        while (i<=num){
            System.out.println("Number is : "+i+" and cube of "+i+" is : "+(i*i*i));
            i++;
        }
    }
}

Output:

Enter the number: 7
Number is : 1 and cube of 1 is : 1
Number is : 2 and cube of 2 is : 8
Number is : 3 and cube of 3 is : 27
Number is : 4 and cube of 4 is : 64
Number is : 5 and cube of 5 is : 125
Number is : 6 and cube of 6 is : 216
Number is : 7 and cube of 7 is : 343

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