Task execution in different ways with Java

Task execution in different ways

	public class ExecuteTask {
	public static void main(String[] args) {
	// Runs in the main thread
	helloWorld();
	// Runs in a new thread
	new Thread(ExecuteTask::helloWorld).start();
	// Runs in the default fork join pool
	ForkJoinPool.commonPool().submit(ExecuteTask::helloWorld);
	// Runs in the default fork join pool via a CompletableFuture
	CompletableFuture.runAsync(ExecuteTask::helloWorld);
	// Runs in a custom fork join pool (with three workers)
	new ForkJoinPool(3).submit(ExecuteTask::helloWorld);
	// Queues up task in a single thread executor
	Executors.newSingleThreadExecutor().execute(ExecuteTask::helloWorld);
	// Caches tasks so that short lived re-occurring tasks can execute faster
	Executors.newCachedThreadPool().execute(ExecuteTask::helloWorld);
	// Runs in a separate thread pool with the given delay
	Executors.newScheduledThreadPool(2).schedule(ExecuteTask::helloWorld, 10, TimeUnit.MILLISECONDS);
	}
	public static void helloWorld() {
	System.out.println("Hello World greeting from " + Thread.currentThread().getName());
	}
	}

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