How to import variable to another file in java?

Question

I am creating a Java program, and it asks for the username and password.
It then opens another window, doing whatever I wanted it to do. Then there is an option to lock the program. When I lock it, I need to get the username and password from the first window that prompted to enter a username and password.
Thanks in advance.

Answer 1

Use parameterized methods, and parameterized constructor