Connection db in java with several frames

Question

After connecting to db on one frame, going to another frame and coming back, i loose my connection to db. For connection at first time i tried to use connection method in code, but then i made class for connection. Unfortunately the result is same - i loose my connection to db after going out and coming back on jframe

Answer 1

Could you show us your Connection class that contains your custom getConnection method?
It is impossible to help without reviewing the code.