Java Stream findFirst() Example

In this tutorial, we will learn Java 8 Stream findFirst() terminal operation with an example.

The Java Stream findFirst() method finds the first element in the Stream if any elements are present in the Stream. The findFirst() method returns an Optional from which you can obtain the element if present. 

Java Stream findFirst() Example

Here is a Java Stream findFirst() example:
import java.util.ArrayList;
import java.util.List;
import java.util.Optional;
import java.util.stream.Stream;

public class Main {
    public static void main(String[] args)
    {
        List<String> stringList = new ArrayList<>();

        stringList.add("one");
        stringList.add("two");
        stringList.add("three");
        stringList.add("one");

        Stream<String> stream = stringList.stream();

        Optional<String> result = stream.findFirst();

        System.out.println(result.get());

    }
}

Output:

one

Java Stream Methods/APIs Examples

Free Spring Boot Tutorial - 5 Hours Full Course


Watch this course on YouTube at Spring Boot Tutorial | Fee 5 Hours Full Course

Comments