StreamsAPI-Tutorials/StreamExamples/IteratorToStream.java at main · CodeJamm/StreamsAPI-Tutorials · GitHub

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package StreamExamples;

import java.util.Arrays;

import java.util.Iterator;

import java.util.Spliterator;

import java.util.Spliterators;

import java.util.stream.Stream;

import java.util.stream.StreamSupport;

public class IteratorToStream

{

public static void main(String[] args)

{

//JAVA 8

Iterator<String> iterator1 = Arrays.asList("a", "b", "c").listIterator();

//Extra step to get Spliterator

Spliterator<String> splitItr = Spliterators

.spliteratorUnknownSize(iterator1, Spliterator.ORDERED);

// Iterator -> Stream

StreamSupport.stream(splitItr, false).forEach(e->System.out.print(e+" "));

System.out.println();

//JAVA 9

Iterator<String> iterator2 = Arrays.asList("a", "b", "c")

.listIterator();

Stream.generate(() -> null).takeWhile(x -> iterator2.hasNext())

.map(n -> iterator2.next()).forEach(e->System.out.print(e+" "));

System.out.println();

}

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