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Java 8 Streams - Collectors.toSet Examples

Java 8 Streams Java Java API 

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java.lang.Objectjava.lang.Objectjava.util.stream.Collectorsjava.util.stream.CollectorsLogicBig

The static method, Collectors.toSet() returns a Collector which produces a new Set instance, populated with stream elements if used as parameter of Stream.collect(Collector) method.

<T> Collector<T,?,Set<T>> toSet()


Examples


package com.logicbig.example.collectors;

import java.math.BigDecimal;
import java.util.Set;
import java.util.stream.Collectors;
import java.util.stream.Stream;

public class ToSetExample {
    public static void main (String[] args) {
        Stream<BigDecimal> s = Stream.iterate(
                            BigDecimal.ONE, bigDecimal ->
                                                bigDecimal.add(BigDecimal.ONE))
                                     .limit(10)
                                     .peek(System.out::println);

        Set<BigDecimal> l = s.collect(Collectors.toSet());
        System.out.println(l);
    }
}

Output

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[10, 9, 8, 7, 6, 5, 4, 3, 2, 1]
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