Java Streams - LongStream max() example

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LongStream max() returns an OptionalLong describing the maximum element of this stream, or an empty optional if this stream is empty.

Syntax

max has the following syntax.

OptionalLong max()

Example

The following example shows how to use max.

import java.util.OptionalLong;
import java.util.stream.LongStream;
//  w  ww  .  j  av  a 2 s.  com
public class Main {
  public static void main(String[] args) {
    LongStream b = LongStream.of(1L, 2L, Long.MAX_VALUE, Long.MIN_VALUE);
    OptionalLong o = b.max();
    
    if(o.isPresent()){
      System.out.println(o.getAsLong()); 
    }else{
      System.out.println("no value");
    }
  }
}

The code above generates the following result.

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