I’m working on integrating the Eclipse Java Compiler into DrJava (see feature request), but error reporting doesn’t work correctly yet.
After some confusion during debugging, I found out that this is because of an Eclipse bug (Eclipse bug report 290470):
In revision 1.45 of DefaultProblemFactory.java, the createProblem method was overloaded to include an elaborationId. But until revision 1.11 of EclipseCompilerImpl.java, the new method wasn’t overridden.
The bugfix isn’t in the in the 3.5.2 release yet, but it is in the 3.6M6 milestone. I guess I will use that for now and then update to release 3.6 when it’s available.

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