sum of elements of array in java code example

Example 1: sum of all numbers in array java

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

Example 2: how to get array input in java

public class TakingInput {

    public static void main(String[] args) {

        Scanner s=new Scanner(System.in);

        System.out.println("enter number of elements");

        int n=s.nextInt();

        int arr[]=new int[n];

        System.out.println("enter elements");

        for(int i=0;i<n;i++){//for reading array
            arr[i]=s.nextInt();

        }

        for(int i: arr){ //for printing array

            System.out.println(i);

        }


    }

}

Example 3: sum numbers in array java

public class Exercise2 {
public static void main(String[] args) {      
int my_array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
int sum = 0;

for (int i : my_array)
    sum += i;
System.out.println("The sum is " + sum);
}
}