Project builds but doesn't run? Updated java?

[lovestogame227]

I recently updated java (about 2 weeks ago) for some sort of application (not for eclipse).

I tried to use eclipse again today and my projects will build but won't run. Can anyone give me advice?

I'm using eclipse luna.

If I could get a step by step re-installation process with the G++ compiler, I will gladly uninstall and reinstall everything so it works again, however I can't really remember how.

[Peter87]

I don't see why reinstalling g++ would help. You said the projects compile so then the compiler must be working. What error message do you get when you try to run your program?

Note that C++ doesn't need Java for anything. It is Eclipse that uses Java so if something went wrong when you updated Java it's most likely to be with Eclipse.