Basically I had no clue at all about JLists, and there was a bit more information in the original version of the question. Anyway, I've got hold of the java GUI 'cheat sheet' my teacher made, which, somehow, is much simpler than anything else I can find.
OS: Windows 10 64 bit Professional
CPU: AMD Ryzen 5900X
RAM: 16GB
GPU: Radeon Vega 56
CPU: AMD Ryzen 5900X
RAM: 16GB
GPU: Radeon Vega 56
