It's not comparable whatsoever to how much faster Java is. In Eclipse it basically compiles in the background right after saving a file so you never feel the impact of compilation.
I'm not sure now, but 10 years ago I was really feeling the impact of compilation in eclipse.
On a big project that I was working on it was taking about 20 minutes for a full build and I had to disable the background compilation because it always messed up stuff and my code would be out of synch.
I think that in general Java compilation feels a bit faster, but for sure you can't say that you don't feel it at all in big projects.
