90% of programming c++ is the same in other langauges. The memory management stuff is not in java but it's not a big deal if you can remember about pointers and allocation/deallocation. I wouldn't worry about it much.
I programmed c++ for 3-4 years then took a year programming only c#. When I went back to c++ for a project at first it was a little weird but it all came flooding back in as I started working within an hour it felt like home again.