一个文件夹中所有文件名的JList。

I'm trying to program a que card application using Swing. Now I'm trying to list all the que card decks (which are txt files) in one folder in a JList. So I want to get the filenames of the text files and add them to the list, which I've already created. I tried multiple approaches and this is the closest I think I've gotten:I'm trying to program a que card application us