Java - Stream Empty Streams

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Introduction

An empty stream is a stream with no elements.

Stream interface empty() static method creates an empty sequential stream. 

// Creates an empty stream of strings
Stream<String> stream = Stream.empty();

IntStream, LongStream, and DoubleStream interfaces contain an empty() static method to create an empty stream of primitive types. 

// Creates an empty stream of integers
IntStream numbers = IntStream.empty();

Demo

import java.util.stream.IntStream;

public class Main {
  public static void main(String[] args) {
    // Creates an empty stream of integers
    IntStream numbers = IntStream.empty();
    System.out.println(numbers.count());

  }//  www .j  a  v  a2  s .  co m
}

Result