I have an old Java project which builds GUIs based on JGoodies FormLayout. As I need to do some updates anyway, I realized, that the JGoodies library is pretty old and even the newest one is from 2015 build for Java 6. Now, I was wondering whether I can stick to such an old version (I cannot buy a license for a newer version) or whether I should better invest time to move everything to another layout manager. If yes, which one? GridBagLayout? I am also not sure whether this is too much work. The Java project generates GUIs based on XML input which defines the layout.
Any advice for me?