Startup optimization of component .. Ideas on threads

Hello everyone,
I have got a component which nearly takes 2 minutes to startup. Its responsibility varying from to startup various other components and load a huge amount from database.
Example: Say my component name is Ports
Now it is ports main class responsibility to load various addresses and Names and so on. The thing is that there are many dependencies with inter-related components so that they have to be loaded in a sequence.
I found a way so i can break the dependency so that i can load some parts separately. So would it be a right thing to load everything separately by creating different threads. My concept on threads is a little bit weak, so what happens with these threads once they do their work. Are they destroyed by JVM as they have no work assigned to them ?
Is there any other better way to load different components in parallelism other than creating different threads ???
Thanks a bunchhhh

Anish_newtojava wrote:
So would it be a right thing to load everything separately by creating different threads.
Using multiple thread may or may not help you. If you're reading everything from the same disk, it almost certainly will not, unless there's a fair amount of processing to be done once it's loaded. One thread (or more if it's a multi-CPU machine) could be doing the processing while the other thread is waiting on I/O. Note that there's no guarantee that this would help, however.
If you're loading from different disks, or from a combination of local disk and network based sources (like a database), then having multiple threads may help, as one thread could do its work while the other is blocked on I/O.
so what happens with these threads once they do their work. Are they destroyed by JVM as they have no work assigned to them ?When a thread's run() method completes, if none of your code is holding onto a reference to the Thread object, then it becomes eligible for GC.
Is there any other better way to load different components in parallelism other than creating different threads ???The only way to do things "in parallel" is with multiple threads.

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