When adding a Jar or Folder to Project Classpath (project -> Properties -> Java Sources Classpath,) the selected Jars/Folders should be inserted after the current selection is the Classpath list.
Right now, they are always inserted at the end of the list, and you must move them up. If the classpath gets large, this is rather tedious.
Maybe this should be a general request for *all* such lists in the GUI?
(In reply to comment #1)
> Maybe this should be a general request for *all* such lists in the GUI?
There's no common 'edit JList/JTable' API in NetBeans.