Threads for beginner

Question

Hi,
I'm very much beginner of this game, and I got this problem, do not know how to solve it correctly. I got a list of objects and a list of handler corresponding to the object. They are put on a TreeMap,
map.put(new objectA(), new handlerForA( param1, param2 ));
map.put(new objectB(), new handlerForB(param1, param2 ));Then when the system found the object instance of key
while(true){
handler = (map.get(some_object);
if (handler != null){
   handler.setObject(some_object);
   handler.start();
}// end if
}// end while So handler are subclass of Thread.
My problem is the single instance of "handler". Because when a new "some_object" comes into the system, by passing to the single instance of handler class, using method "setObject()" I overwrite the previous copy of the "some_object".
What I want is a way to take this single instance of the handler, starting a new thread and overwrite the thread code with the same copy of the handler (or execute the handler in a different area of memory).
I'm stuck!

Answer 1

You probably don't need to use threads to handle this problem. Instead of putting the handler in the map, put something in the map which can create a handler, that way instead of singletons, you will have new objects each time. Though I suspect once you do away with the threads, you will not encounter the problem you describe.