I'm getting the following error when I try to run the TreeTable app found in the Swing-JTree link:


java.lang.NoClassDefFoundError: TreeTableModel


at FileSystemModel2.class$(FileSystemModel2.java:64)


at FileSystemModel2.(FileSystemModel2.java:70)


at TreeTableExample2.(TreeTableExample2.java:73)


at TreeTableExample2.main(Compiled Code)


any sugestions?