Java 8 Streams - LongStream.count Examples

[Last Updated: Nov 8, 2025]

Interface:

java.util.stream.LongStream

Method:

long count()

This method returns the count of elements in this stream. This is a special case of a reduction and is equivalent to:

mapToLong(e > 1L).sum()

This is a terminal operation.

Examples

package com.logicbig.example.longstream;

import java.util.stream.LongStream;

public class CountExample {

    public static void main(String... args) {
        LongStream stream = LongStream.range(1, 100);
        long count = stream.count();
        System.out.println(count);
    }
}

Java 8 Streams - LongStream.count Examples

Interface:

Method:

Examples

Output

See Also