Problem with database functions after disposing frames.....

Question

Hello,
I have some problems with hangups with my app after disposing some frames...
My scenario is something like this:
- i have a login frame which instantiates some other application module and it disposes itself with some code like:
this.dispose();
this.finalize();
System.runFinalization();
System.gc();
- after that the new instantiated module frame can return to the login frame by disposing itself and instantiating again the login frame with the same code like above
my problem is that after some 2-3 tryes to login to a module - retun to login - login to module - return to module my app hangs on some code like:
combobox.setSelectedIndex(0);
or
queryDataSet.executeQuery();
i have to mention that i use a DataModule.
do u have any ideas?
thanks in advance.
adrian

Answer 1

>
- i have a login frame which instantiates some other
application module and it disposes itself with some
code like:
this.dispose();
this.finalize();
System.runFinalization();
System.gc();
Sounds like a bad idea all around.
Finalize is supposed to be called by the gc - not by you.
Almost always using finalize is either pointless or will cause memory leaks.
do u have any ideas?
I would guess it has nothing to do with JDBC.
Are you catching SQLException and printing them out? If not then do so.
If you are do you see any exceptions? If not then it isn't JDBC.