Ok this would be little challenge, so who wants to be part of this challenge post code here. There is no right solution only better, you cant failure.
Problem is here: make countdown from 1 minute in Swing frame, so it shows also the timer. When it hits 0 then it starts some action, show messagebox, another frame or something else.
Should be easy task, if you want to use others people code then give credits to them. I will post my solution at the end of day. I hope so

Happy coding!