Package modernfeatures.java21

Class ThreadComparisonDemo

java.lang.Object

modernfeatures.java21.ThreadComparisonDemo

public class ThreadComparisonDemo
extends Object

Demonstrates and compares classic (platform) threads and virtual threads in Java 21+.

This class launches several classic threads and several virtual threads, showing their creation, execution, and thread identity. It prints each thread's details and sleeps them briefly to illustrate their independent execution. The example highlights differences between classic and virtual threads, particularly in how they are created, managed, and reported by the JVM.

Note: This example uses Thread.sleep in the main method as a simple way to let child threads finish before the main thread exits. In production code, more robust synchronization (like join) should be used.

Constructor Summary

Constructors

Constructor	Description
ThreadComparisonDemo()

Method Summary

Modifier and Type	Method	Description
static void	main(String[] args)	Entry point.

Methods inherited from class java.lang.Object

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

Constructor Details

ThreadComparisonDemo

public ThreadComparisonDemo()

Method Details

main

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

Entry point. Launches classic (platform) threads and virtual threads, each printing their identity and sleeping to simulate work. Thread.sleep is used in each thread to simulate workload and in the main method to give threads time to run before the main thread exits.

Parameters:

args - command line arguments (not used)

Throws:

InterruptedException - if the main thread is interrupted while sleeping