I am a beginner and I want to know the main differenc between Java and C++

I have done C++ for 6 months (not long enough to fully understand it) I know I can make stand alone programs with c++.
Does Java have the same Capabilites which one will I be better of with to make stand alon programs

Which is more quicker to learn J++ or Visual J++ ?? please reply

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Kind Regards

Qasim Raza Iqbal