Below is a repository of links for Java users. Linked to each link is the particular post on this sticky that corresponds to the subject matter. To add subjects or items to a particular list (which I encourage you to do to help make it more complete) I ask that you PM the moderator of the forum at the time. Which right now, is me.
IDE's / Editors
Interesting Open Source Java Projects our Active Users work on
Interesting Threads / Discussions