Question

Thread thread = new Thread("New Thread") 
{
    public void run(){ 
       //instructions A,B and C
    }
};

thread.start();
//instructions D, E

I wonder why D and E do not run after termination of instructions A, B and C.
How do I make D and E run after instructions A, B and C finish?

Answer 1

1. If you want D and E to run after the completion of the A,B and C, then you must use
join().

2. When join() is called on a thread, then it waits for that thread to die(ie to finish its run() method), then execute the line after the join().

3. Its better to use CountDownLatch from java.util.concurrent package.