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Java 8 Streams - IntStream.map Examples

[Last Updated: Nov 8, 2025]

Java 8 Streams Java Java API

Interface:

java.util.stream.IntStream

Method:

IntStream map(IntUnaryOperator mapper)

This intermediate operation, returns a stream consisting of the results of applying the given mapper function to the elements of this stream.

Examples

package com.logicbig.example.intstream;

import java.util.stream.IntStream;

public class MapExample {

    public static void main(String... args) {
        IntStream intStream = IntStream.range(1, 5);
        IntStream intStream1 = intStream.map(i -> i * 2);
        intStream1.forEach(System.out::println);
    }
}

Output

See Also