Java 8 – Convert a Stream to List

A Java 8 example to show you how to convert a Stream to a List via Collectors.toList

Java8Example1.java

package com.mkyong.java8;

import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.Stream;

public class Java8Example1 {

    public static void main(String[] args) {

        Stream<String> language = Stream.of("java", "python", "node");

        //Convert a Stream to List
        List<String> result = language.collect(Collectors.toList());

        result.forEach(System.out::println);

    }
}

output

java
python
node

Yet another example, filter a number 3 and convert it to a List.

Java8Example2.java

package com.mkyong.java8;

import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.Stream;

public class Java8Example2 {

    public static void main(String[] args) {

        Stream<Integer> number = Stream.of(1, 2, 3, 4, 5);

        List<Integer> result2 = number.filter(x -> x!= 3).collect(Collectors.toList());

        result2.forEach(x -> System.out.println(x));


    }
}

output

1
2
4
5

References

  1. Java 8 Streams filter examples
  2. Java 8 Collectors JavaDoc

About the Author

author image
mkyong
Founder of Mkyong.com, love Java and open source stuff. Follow him on Twitter, or befriend him on Facebook or Google Plus. If you like my tutorials, consider make a donation to these charities.

Comments

Leave a Reply

avatar
newest oldest most voted
Navneet
Guest
Navneet

Hi mkyong, This article helped me a lot.