I suppose I'm not seeing the difference between Java's restriction of only using reference semantics, and C++'s option of using reference semantics. Since Java

I suppose I'm not seeing the difference between Java's restriction of only using reference semantics, and C++'s option of using reference semantics. Since Java only provides reference semantics, while C++ allows both reference semantics and value semantics, this would make Java be a subset of C++, in this regard.