// Java Program to find sum of elements in a given array class Test { static int arr[] = { 12, 3, 4, 15 }; // method for sum of elements in an array static int sum() { int sum = 0; // initialize sum int i; // Iterate through all elements and add them to sum for (i = 0; i < arr.length; i++) sum += arr[i]; return sum; } // Driver method public static void main(String[] args) { System.out.println("Sum of given array is " + sum()); } }