Main.java Source code

Introduction

Here is the source code for Main.java

Source

public class Main {
    public static void main(String[] args) {
        new ThreadGroupDemo();
    }
}

class ThreadGroupDemo implements Runnable {
    public ThreadGroupDemo() {

        ThreadGroup pGroup = new ThreadGroup("Parent ThreadGroup");
        pGroup.setMaxPriority(Thread.MAX_PRIORITY - 2);

        ThreadGroup cGroup = new ThreadGroup(pGroup, "Child ThreadGroup");
        cGroup.setMaxPriority(Thread.NORM_PRIORITY);

        Thread t1 = new Thread(pGroup, this);
        t1.setPriority(Thread.MAX_PRIORITY);
        System.out.println("Starting " + t1.getName());
        t1.start();

        Thread t2 = new Thread(cGroup, this);
        t1.setPriority(Thread.MAX_PRIORITY);
        System.out.println("Starting " + t2.getName());
        t2.start();

        System.out.println("Active threads in \"" + pGroup.getName() + "\" = " + pGroup.activeCount());

    }

    public void run() {
        System.out.println(Thread.currentThread().getName() + " [priority = " + Thread.currentThread().getPriority()
                + "] finished executing.");
    }
}