In this program, You will learn how to find the sum of prime numbers in an array in java.

```
Some list of prime numbers is: 2 3 5 7 9 11 13
```

```
import java.util.Scanner;
class Main {
public static void main(String args[]) {
int i, s, j, p, sum = 0;
int arr[] = new int[100];
Scanner sc = new Scanner(System.in);
System.out.print("Enter size of an array:");
s = sc.nextInt();
System.out.print("Enter array elements:");
for (i = 0; i < s; i++) {
arr[i] = sc.nextInt();
}
for (i = 0; i < s; i++) {
j = 2;
p = 1;
while (j < arr[i]) {
if (arr[i] % j == 0) {
p = 0;
break;
}
j++;
}
if (p == 1) {
sum = sum + arr[i];
}
}
System.out.println("Sum of all prime numbers:" + sum);
}
}
```

```
Enter size of an array:5
Enter array elements:2 3 4 5 6
Sum of all prime numbers:10
```