PRINT SUM OF NATURAL NUMBER IN JAVA

In this code, the user is prompted to enter a positive integer. Then, a for loop is used to iterate from 1 to the given number (n). The loop adds each number to the sum variable. Finally, the result is printed to the console.

Note that the code assumes the user will enter a positive integer. You can add additional input validation if necessary.

import java.util.Scanner;
public class Naturenumber {
    public static void main(String []args){
        Scanner Sc = new Scanner(System.in);
        System.out.println("enter the any number");
        int n = Sc.nextInt();
            int Sum = 0;
           for(int i=0; i<=n; i++)
          {
        Sum = Sum + i;
         }
        System.out.println("Sum is "+Sum);
       }
    }

WITHOUT USING SCANNER

public class Nature1 {
    public static void main(String [] args){
        int n = 4;
        int Sum = 0;
        for(int i=0;i<=n;i++)
        {
            Sum = Sum + i;
        }
        System.out.println("Sum is "+Sum);
    }
}

output is 10