How to calculate the sum of the numbers in an array

In this blog post, I will be explaining how you can calculate the sum of numbers in an array. Consider the following code snippet:

package demo;

public class SumDemo {

public static void main(String[] args) {
int numbers[] = {5,4,7,9,12};

int sum = 0;
for(int number:numbers){
sum += number;
}
System.out.println("sum="+sum);

}

}

A variable called sum is used to store the sum of numbers. It is initialized to 0. There is a for loop used. This iterates through the input list. It adds each number in the list to the sum variable.

This code will print the following output:

sum=37