Text boxes in Slick2D?

In my game I’m making a login pane for people to login to my game. I of course need to have text boxes. Sadly, I don’t know of anyway to put text boxes into a slick game without a GUI library. Is there any other way? All I want to do is literally add two text boxes onto the screen.

Should I just make a launcher for the game and then have that be a JFrame or what?