[hoka]

Well, if it's just detecting, that's not GC. That's just, "Hey! There's trash here!"

[tlrobinson]

Once you know where the trash is, the easy part is deallocating it.

[invalidname]

Its not automatic, you need to explicitly release. They are referring to the tools builtin in xcode which you will have to use manually to debug memory problems in Objective-C then move it back to your Java code as annotations.