Generate Infinite Stream of Integers in Java

Generate Infinite Stream of Integers in Java

Last Updated : 11 Dec, 2018

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.

Java

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.

Java

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.

Java

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:

Generate Infinite Stream of Integers in Java

R

RishabhPrabhu

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Article Tags :

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Practice Tags :

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