Package modernfeatures.java21

Class VirtualThreadsDemo

java.lang.Object

modernfeatures.java21.VirtualThreadsDemo

public class VirtualThreadsDemo
extends Object

Demonstration of Virtual Threads in Java 21+.

This class showcases the use of virtual threads, a lightweight concurrency model introduced in Java 21 as part of Project Loom. Virtual threads allow for the creation of thousands (or even millions) of concurrent threads with minimal resource overhead compared to traditional platform threads. This makes high-concurrency programming more scalable and accessible. Virtual threads are significant because they decouple the Java thread from the underlying OS thread, enabling efficient management of concurrent tasks and better utilization of modern hardware.

Constructor Summary

Constructors

Constructor	Description
VirtualThreadsDemo()

Method Summary

Modifier and Type	Method	Description
static void	main(String[] args)	Main method demonstrating how to launch and use virtual threads.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

VirtualThreadsDemo

public VirtualThreadsDemo()

Method Details

main

public static void main(String[] args)
                 throws InterruptedException

Main method demonstrating how to launch and use virtual threads.

The method launches 5 virtual threads. Each thread prints its identifier and thread info, then sleeps for 1 second to simulate some work. The main thread then sleeps for a short time to allow the virtual threads to complete before the program exits. (In production code, proper synchronization or thread joining would be used instead of sleeping.)

Parameters:

args - command-line arguments (not used)

Throws:

InterruptedException - if the main thread is interrupted while sleeping