As nearly every Java developer has a slightly different way of using Java, the tool has not translated all possible paths yet. It is released as J2ObjC version 0.5.

One of the main problems converting Java code to Objective-C is garbage collection. J2ObjC can manage unused objects in several ways but it uses reference counting with auto-release pools by default.

J2ObjC is not a Java emulator, but instead converts Java classes to Objective-C classes that directly use the iOS Foundation Framework. It supports the full Java 6 language and most of its runtime ...