threads??

[srikanth reddy]

  class Question17 {
public static void main(String[] args) throws Exception{
Thread t1 = new Thread(getRunnable(3));
Thread t2 = new Thread(getRunnable(4));
t1.join();
System.out.println("End");
}
 
public static Runnable getRunnable(final int id){
return new Runnable(){
public void run(){
for(int i=0;i<id;i++){
System.out.print(" "+i);
}
}
};
}
}

here i understand what this code trying to do...but my doubt is here we have not used the start so how can the thread can be started...
and so t1.join() means that main thread wont execute until the thread t1 has finished ..so i think the ouput should be blank...but actually its giving me END..

[Seb Mathe]

The join method checks if the thread is alive,
and "A thread is alive if it has been started and has not yet died."