It's just another language.
And if you stick with the relatively small subset of pure OOP features, there is really not that much to learn from a Java developers perspective. The only thing you should have to teach them in order for them to be generic OOP programmers is the fact that they have to implement a destructor to take care of their memory.
However, if they should be using the STL, templates, exceptions and the likes, they'll probably need some more guidance.
