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():

Using the IntStream.iterate() method, iterate the IntStream with i by incrementing the value with 1.
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:

Using Random.ints():

Get the next integer using ints() method
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():

Generate the next integer using IntStream.generate() and Random.nextInt()
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:

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Java