This project was created for a Java assignment at the Illinois Institute of Tecnology
You are able to either run a console version from CTAMain or use the gui like above, gui.main(). The options should present a listbox in most cases reponding to the user selections. Above, the listbox is responding to "Show All."
If you happen to have issues running the program, it may be due to dependency/sdk. This was 1.8, but the image is opened in JetBrains in 2020 with 14 and a couple quick recommendations resolved the issue.