Online Java Compiler By
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class NewThread extends Thread { NewThread(String threadname, ThreadGroup tg) { super(tg, threadname); } public void run() { for(int i = 0;i < 10;i++) { i++; } System.out.println(Thread.currentThread().getName() + " completed executing"); } } public class ThreadGroupSetDaemonExp { public static void main(String arg[]) throws InterruptedException, SecurityException, Exception { // creating a parent threadGroup ThreadGroup tg1 = new ThreadGroup("Parent thread"); tg1.setDaemon(true); // creating a child threadGroup ThreadGroup tg2 = new ThreadGroup(tg1, "Child thread"); tg2.setDaemon(false); // creating a thread NewThread t1 = new NewThread("Thread-1", tg1); t1.start(); // creating another thread NewThread t2 = new NewThread("Thread-2", tg2); t2.start(); // returns true if this thread group is a daemon thread group System.out.println("Is " + tg1.getName() + " a daemon threadGroup? " + tg1.isDaemon()); System.out.println("Is " + tg2.getName() + " a daemon threadGroup? " + tg2.isDaemon()); } }
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