Java tutorial
import java.util.HashSet; import java.util.concurrent.ForkJoinPool; import java.util.stream.IntStream; public class Main { public static void main(String[] arg) throws Exception { Runnable parallelCode = () -> { HashSet<String> allThreads = new HashSet<>(); IntStream.range(0, 1_000_000).parallel().filter(i -> { allThreads.add(Thread.currentThread().getName()); return false; }).min(); System.out.println("executed by " + allThreads); }; System.out.println("default behavior: "); parallelCode.run(); System.out.println("specialized pool:"); ForkJoinPool pool = new ForkJoinPool(2); pool.submit(parallelCode).get(); } }