What most developers who code in Java does is to use object pool and manage memory manually, its a huge pain in the butt.
How is this different from C++? Oh yeah, instead of objects you get "big blocks of RAM".
How is this different from C++? Oh yeah, instead of objects you get "big blocks of RAM".
Fortunately, there has been plenty of research on GCs that are fast enough for games. So the solution is to use one of those for Android, now that people are actually interested in writing games.
A better GC was already mentioned by the OP as another option.