Conversion of Stream To Set in Java\\n

We can convert a stream to set using the following ways.

• Using stream.collect() with Collectors.toSet() method - Stream collect() method iterates its elements and stores them in a collection.collect(Collector.toSet()) method.

• Using set.add() method - Iterate stream using forEach and then add each element to the set.

Example

Live Demo

import java.util.*; import java.util.stream.Stream; import java.util.stream.Collectors;   public class Tester {            public static void main(String[] args) {       Stream<String> stream = Stream.of("a","b","c","d");       // Method 1       Set<String> set = stream.collect(Collectors.toSet());       set.forEach(data -> System.out.print(data + " "));       Stream<String> stream1 = Stream.of("a","b","c","d");       System.out.println();       //Method 2       Set<String> set1 = new HashSet<>();       stream1.forEach(set1::add);       set1.forEach(data -> System.out.print(data + " "));    } }

Output

a b c d a b c d