- Posted By: pradeeshtet
- Comments: 0

simple java program to sum all the numbers in an integer array. Build-in function to sum a values in array is used in java8. array_sum in php.

class Sumarray{ public static void main(String args[]) { int[] a={8,5,6,2,4}; int sum=0; for(int i=0;i< a.length;i++) { sum +=a[i]; } System.out.println(“Sum of array”+sum); }}

**output:**

Sum of array 25

**Explanation**:

At begining the value of variable “sum” will be 0.

sum +=a[i] is the short form of sum = sum+a[i] can be used either.

All the element of array will be iterated and added to the variable “ sum”.

Build in method to sum the numbers in array - **JAVA8**

stream is used in java8.. java8 documentation

int[] sarray = {10,20,30,40,50}; int sum = IntStream.of(sarray).sum(); System.out.println("The sum is " + sum);