Query on Thread.setDaemon method......

Question

I have a small conceptual problem.
I wrote a small program which starts a thread
from it's main method and marks it as Daemon.
The Thread actually starts an infinite loop.
Inside the run method of another Thread I start another Thread
which is also an infinite loop. I mark it as non-daemon(although I don't need to as default is daemon).
But when I ran the program I found that the program terminates
after some time. As What I know about threads it should not have stopped
becz. a non daemon thread was running. Plz. explain it.
Both the Classes are paster below.
Nimesh
/*Class::Test 1*/
public class Test1 implements Runnable{
private static Test2 test2=null;
private static Thread thread2=null;
public static void main(String args[]){
Test1 test2=new Test1();
Thread thread1=new Thread(test2);
thread1.setDaemon(true);
thread1.start();
public void run(){
test2=new Test2();
thread2=new Thread(test2);
thread2.setPriority(Thread.NORM_PRIORITY );
thread2.setDaemon(false);
thread2.start();
System.out.println("Got here");
while(true){
func1();
public void func1() {
System.out.println("In Thread 1");
/*Class: Test1*/
public class Test2 implements Runnable{
public void run(){
while(true){
func1();
public void func1(){
System.out.println("In Thread2");

Answer 1

I think that you have two problems
1) there is a chance that the second thread would not have started, because i think the start method does not actually garuantee that the second thread is actually started when the method returns. If you want to garuantee that the second thread has started you need to wait on some synchronized block of code in thread one after you have called the start method for thread two. Then thread two needs to call a notify method in its run method.
2) Your main method is exiting before all the threads are starting, i would put a sleep of say 1ms to let the other threads start or a syncrhonized block.