Java Stream How to - Filter and find the first or return the default value

• Back to Stream Filter  ↑

The following code shows how to filter and then find the first or return the default value.

Example

// w w w. j  a  v a 2s  .com
import java.util.Arrays;
import java.util.List;

public class Main {
   public static void main(String[] args) {
     List<Integer> numbers = Arrays.asList(1, 2, 3, 4, 5);
     int i = numbers.stream().filter(n -> n % 2 == 0).findFirst().orElse(-1);

     System.out.println(i);
   }

}

The code above generates the following result.

• Back to Stream Filter  ↑