How to use JTree to display files from a directory in JPanel?

Question

I am working on developing a GUI using Swing. The GUI is implemented in such a way that the when the user wants to load a set of text files, then the filechooser dialog should o

Answer 1

You haven't revalidated the containing content Container. At the end of your actionPerformed method, add the lines

//content.invalidate();
content.revalidate();
content.repaint();