Sum of Array Elements in Java
Java program to calculate the sum of all elements in an array.
Last updated: 11 January 2026
Method 1: Using For Loop
Iterate and add elements.
Main.javaRun in Compiler →
public class ArraySum {
public static void main(String[] args) {
int[] arr = {1, 2, 3, 4, 5};
int sum = 0;
for (int i = 0; i < arr.length; i++) {
sum += arr[i];
}
System.out.println("Sum of all elements: " + sum);
}
}Output:
Sum of all elements: 15
Explanation
We initialize sum=0 and iterate through the array adding each element to sum.
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