Problem with IBM JVM or the Thread

Question

Hi All,
I have a class which implements Runnable. The purpose of the program is to read a file and count the number of lines present in that.
I am using the IBM JVM. The logic runs like this..
For each 2048 bytes read , it spawns a new thread with this object and each such new thread counts the no. of newline chars present. Once the thread is finished with its 2048 bytes it upddates an instance variable , count, to that value , updates the boolean done flag to "true" and stops. Once the whole file is read(thereby creating filesize/2048 threads ) , it keeps waiting for the threads to finish and then adds all the counts.
Now the problem is that for some reason these threads seem to hang. There are no static vars present.
Pls help.
Tx

Answer 1

Help yourself first.
If this is "Windows", try typing Ctrl-Break in your window (Type Ctrl-\ if you're on Windows). This will produce a thread dump with all of your threads.
See which ones are running, and what they're doing.
Did you remember to either make your threads daemons (setDaemon(true)), or explicitly exit the run() method of the threads?