GCJ vs. C++ in RAM

[Vladimir Levin]

I am currently evaluating using gcj for an embedded application, and I'd 
like to get a sense of how large the discrepancy in RAM usage would be 
depending on whether we went ahead with gcj or stuck to C++. Is it an 
order of magnitude or is it fairly sensible?

I am hoping that I can get some estimates from this list on the RAM 
consumption of an application written with GCJ vs. C++. The application 
I have in mind has about 50,000 lines of code, and incorporates 
multi-threading and sockets. If possible, the C++ implementation would 
include the Boehm garbage collector, but I wouldn't mind getting an 
estimate for C++ with and without the garbage collector.