# Program to Find the Sum of First N Natural Numbers using java ## Find the Sum of first N natural Numbers

We know that Natural number is integer number which start from 1,2,3,4…… and so on.

So we will calculate the First N natural number

In the sum of first N natural number user gave the value of N. If the value is 6 then process is following

1+2+3+4+5+6 = 21

### Implementation of  Sum of first N natural numbers

• Step 1. Start
• Step 2. Enter a number (N).
• Step 3. Use formula to calculate the sum of N natural number || Sum=(n*(n+1))/2.
• Step 4. Print sum of N Natural Number.
• Step 5. Stop  #### Code of Sum of first N natural number in Java

`//Java program to print the sum of n natural numbersimport java.util.Scanner;public class sum_of_n_natural_numbers{		public static void main(String[] args)	{		//scanner class declaration		Scanner sc = new Scanner(System.in);				//input from user		System.out.print("Enter a number : ");						int n = sc.nextInt();		//declare a variable to store sum		int sum=(n*(n+1))/2;				//display the sum		System.out.print("Sum of n natural numbers is "+sum);		//closing scanner class(not compulsory, but good practice)		sc.close();														}}`

### Output

`Enter a number : 5Sum of n natural numbers is 15` 