how to connect two classes?

hy
i got projcet in blue-j with two classes.
first is frame with textfields for bank account number and pass
second is frame with personal data, bank transactions, etc

i want to connect those classes (frames) so when i enter correct pass and account number and hit the button on the first frame second frame appears and first one dissapears

i hope that`s possible

anyway i got less than 1 h to finish it, so please help me

tnx :)

Is that the best program design? Would another layout out of the components be better? Like JTabbedPane.

If you must have two frames, have you tired using the setVisible() method?