What is the difference between javac and the Eclipse compiler?

Question

Is Eclipse\'s Java compiler just a wrapper around the same core that the javac program is wrapped around, or is it a separate compiler altogether? If the latter

Answer 1

It is a separate compiler altogether. This is needed as javac doesn't allow compilation of slightly broken code, from the eclipse site

An incremental Java compiler. Implemented as an Eclipse builder, it is based on technology evolved from VisualAge for Java compiler. In particular, it allows to run and debug code which still contains unresolved errors.