class ThreadGroupDemo1 { public static void main(String[] args) { ThreadGroup tg = new ThreadGroup("My ThreadGroup"); MyThread mt = new MyThread(tg, "My Thread"); mt.start(); } } class MyThread extends Thread { MyThread(ThreadGroup tg, String name) { super(tg, name); } public void run() { ThreadGroup tg = getThreadGroup(); System.out.println(tg.getName()); } }