Generate Infinite Stream of Integers in Java

Given the task is to generate an infinite sequential unordered stream of integers in Java.

This can be done in following ways:

• Using IntStream.iterate():
  1. Using the IntStream.iterate() method, iterate the IntStream with i by incrementing the value with 1.
  2. Print the IntStream with the help of forEach() method.

  
  

  
  
  

  import java.util.stream.*;    public class GFG {        // Main method     public static void main(String[] args)     {            IntStream                // Iterate the IntStream with i             // by incrementing the value with 1             .iterate(0, i -> i + 1)                // Print the IntStream             // using forEach() method.             .forEach(System.out::println);     } }

  Output:

  0
  1
  2
  3
  4
  5
  .
  .
  .
  

• Using Random.ints():
  1. Get the next integer using ints() method
  2. Print the IntStream with the help of forEach() method.

  
  

  
  
  

  import java.util.stream.*; import java.util.*;    public class GFG {        // Main method     public static void main(String[] args)     {            // Create a Random object         Random random = new Random();            random                // Get the next integer             // using ints() method             .ints()                // Print the IntStream             // using forEach() method.             .forEach(System.out::println);     } }

  Output:

  -1214876682
  911266110
  1224044471
  -1867062635
  1893822159
  1226183018
  741533414
  .
  .
  .
  

• Using IntStream.generate():
  1. Generate the next integer using IntStream.generate() and Random.nextInt()
  2. Print the IntStream with the help of forEach() method.

  
  

  
  
  

  import java.util.stream.*; import java.util.*;    public class GFG {        // Main method     public static void main(String[] args)     {            // Create a Random object         Random random = new Random();            IntStream                // Generate the next integer             // using IntStream.generate()             // and Random.nextInt()             .generate(random::nextInt)                // Print the IntStream             // using forEach() method.             .forEach(System.out::println);     } }

  Output:

  -798555363
  -531857014
  1861939261
  273120213
  -739170342
  1295941815
  870955405
  -631166457
  .
  .
  .