I have a class extending AbstractTableModel and it pools Data from a Database, Since its a Swing Component I initialize it in EventQueue, the Problem is most of the operation such as getting Connection and Querying DB all runs in eventqueue hence it takes time to load the JTable. Is there a way to separate the two processes.
If you need to do a time-consuming operation, to prevent the GUI from freezing you have to do it in a thread different than the Event Dispatcher Thread. Those threads are called Worker threads, an example on how to use them is detailed in this other question.
Edit: I have found a very nice introduction and example article here.