Java Program to find sum of series- 1+2+3+...+n

How to find sum of a series upto n numbers ?

This is java program to find sum of series like 1+2+3+4+..+n up to n numbers ...

Source Code:   

public class SeriesProgramPart1 {

	public static void main(String[] args) {

		try (Scanner var = new Scanner(System.in)) {
			int n,i,sum = 0;
			System.out.println("Enter the number:");
			n = var.nextInt();
			
			for(i=1;i<=n;i++) {
				if(i==n) {
					System.out.print(i);
				}else {
					System.out.print(i+ "+");
				}
				sum = sum +i;
				
			}
			System.out.println();
			System.out.println("The Summation if series is: "+sum);
		}
		
	}

}

Outputs:

        Enter the number:

         5

        1+2+3+4+5

       The Summation if series is: 15