If you grab specific favourite functionality, this quickly becomes a no-true-scotsman situation. We know what OOP looks like in general. First-class metaclasses support is not available in Java, but if you really need it for some specific cases, you do them at compile time using annotations processor. The extreme-late-binding as Alan Key would like it does indeed make Java an inferior OOP. Service registration does this on a macro scale though. (although I've seen more abuse of micro-scale extreme late binding than use of it in good design)
And C++ has always been an “OOP” language.
But they are both a dumped down version of OOP as they both don’t have metaclass support or extreme late binding.
For something more aligned to OOP look at smalltalk or Ruby