Corky Cartwright, my PhD advisor, released a new version of DrJava today. He writes:
Dear DrJava Users:
We have made a new stable version available: drjava-stable-20130901-r5756
You can download it from the DrJava website at http://drjava.org/ 
or from SourceForge.net by following this link:
You receive this email because you have subscribed to a DrJava mailing list.
DrJava is a lightweight programming environment for Java designed to foster test-driven software development. It includes an intelligent
program editor, an interactions pane for evaluating program text, a
source level debugger, and a unit testing tool.
In addition to bug fixes, this stable release includes a number of new features introduced after the last stable release:
Note: Java 5 compatibility has been dropped. To use DrJava, you will
need Java 6 or newer.
New features since the last stable release:
- DrJava is now compatible with Java 8 and perhaps with future editions
Bug fixes since the last stable release:
- DrJava correctly finds and labels Oracle JDK 7 compilers on Mac OS X.
NOTE: Newer releases of Mac OS X include a gatekeeper that will not run unlicensed applications like DrJava unless you explicitly open DrJava by
“right” (control-key) clicking on the DrJava icon and executing the
“Open” command. After you manually open DrJava once, Mac OS X remembers
that it should be allowed to run and will open DrJava normally like
other applications. Most open source applications like DrJava will not
be licensed on Mac OS X because Apple charges a fee for this service.
I’m still very pleased by how well my auto-update feature in DrJava  works.