Understanding the FindAny Method

Understanding the FindAny Method

Learn how to use the findAny method in java.util.Stream. This returns an Optional describing an element, or an empty Optional if Stream is empty.

Also, remember that the same stream cannot be operated upon with multiple methods after a complete iteration.

import java.util.Optional;import;public class StreamsFindAny {   public static void main(String[] args)    {      StreamsFindAny streamsFindAny = new StreamsFindAny();      streamsFindAny.proceed();   }   public void proceed()    {      Stream stream = Stream.of("1","5","10");      Optional findAnyOutput = stream.findAny();      System.out.println("FindAny output: " + findAnyOutput);      //If you fail to reinitialize the stream again (as below), you will end up in an Exception case since the stream has already been operated in the previous lines.      //Exception in thread "main" java.lang.IllegalStateException: stream has already been operated upon or closed      stream = Stream.of("1","5","10");      long streamCount = stream.count();      System.out.println("Count of elements in stream: " + streamCount);   }}/*

Expected output:

[root@mypc]# java StreamsFindAnyFindAny output: Optional[1]Count of elements in stream: 3*/
See also  Java Developer Jobs: Your Guide to Landing the Perfect Position in 2024

About Our Editorial Process

At DevX, we’re dedicated to tech entrepreneurship. Our team closely follows industry shifts, new products, AI breakthroughs, technology trends, and funding announcements. Articles undergo thorough editing to ensure accuracy and clarity, reflecting DevX’s style and supporting entrepreneurs in the tech sphere.

See our full editorial policy.

About Our Journalist