Create a program to calculate the sum of numbers from 0 to the number entered in Java code example

Example 1: Java program to find the sum of first 100 numbers

int sum = 0;
		for(int i = 1; i <= 100; i++) {
			sum = sum + i;
		}
		System.out.println("Sum of first 100 numbers is : " + sum);

Example 2: sum of numbers in java

public class SumNatural {

    public static void main(String[] args) {

        int num = 100, sum = 0;

        for(int i = 1; i <= num; ++i)
        {
            // sum = sum + i;
            sum += i;
        }

        System.out.println("Sum = " + sum);
    }
}