Java Streams - Stream count() example

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Stream count() returns the count of elements in this stream.

Syntax

count has the following syntax.

long count()

Example

The following example shows how to use count.

import java.util.Arrays;
import java.util.List;
/*from   w ww.j a va 2 s .  co m*/
public class Main {
  public static void main(String[] args) {
    List<Integer> numbers = Arrays.asList(1, 2, 3, 4, 5);
    long o = numbers.stream()
                     .count();

    System.out.println(o);
  }
}

The code above generates the following result.

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