One of the best things about working in Java is how powerful its GUI extension libraries are and just how quickly we can get a program up and running that not only has functional code, but also has a slick, professional-looking user interface to back it up that would help anyone interact with our program. That's what we're going to do now: connect the design interface for basic username and password validation with some backend code that we're going to write which will actually check two text fields to see whether they're the ones we're looking for.
To start off, we have the basic GUI with a text field where someone can put a username and password, which will just show up as stars: