The Java Stream distinct() method is an intermediate operation. 

The Java Stream distinct() method is a non-terminal operation that returns a new Stream that will only contain the distinct elements from the original stream. Any duplicates will be eliminated. 

Java Stream distinct() Example

Here is an example of the Java Stream distinct() method:

import java.util.ArrayList;
import java.util.List;
import java.util.Optional;
import java.util.stream.Collectors;
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();

        List<String> distinctStrings = stream
                .distinct()
                .collect(Collectors.toList());

        System.out.println(distinctStrings);
    }
}

Output:

[one, two, three]

Java Stream Methods/APIs Examples

1. Java Stream filter() Example
2. Java Stream map() Example
3. Java Stream flatMap() Example
4. Java Stream distinct() Example
5. Java Stream limit() Example
6. Java Stream peek() Example
7. Java Stream anyMatch() Example
8. Java Stream allMatch() Example
9. Java Stream noneMatch() Example
10. Java Stream collect() Example
11. Java Stream count() Example
12. Java Stream findAny() Example
13. Java Stream findFirst() Example
14. Java Stream forEach() Example
15. Java Stream min() Example
16. Java Stream max() Example
17. Java Stream reduce() Example
18. Java Stream toArray() Example