Main.java Source code

Introduction

Here is the source code for Main.java

Source

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

class ThreadGroupDemo implements Runnable {

    public ThreadGroupDemo() {
        ThreadGroup pGroup = new ThreadGroup("Parent ThreadGroup");

        ThreadGroup cGroup = new ThreadGroup(pGroup, "Child ThreadGroup");

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

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

        // determine which ThreadGroup is parent
        boolean isParent = pGroup.parentOf(cGroup);
        System.out.println(pGroup.getName() + " is the parent of " + cGroup.getName() + "? " + isParent);

        isParent = cGroup.parentOf(pGroup);
        System.out.println(cGroup.getName() + " is the parent of " + pGroup.getName() + "? " + isParent);

    }

    public void run() {
        System.out.println(Thread.currentThread().getName() + " finished executing.");
    }
}