How long a Java Class Name length?

I have found some strange behaviour in Java. Today, I failed to install scarab in sunOS 5.8, but last day I had succefully install on windows OS (wow that's why widows is more interesting :)). Because i am a fighter so i am not give in that condition. With my experience on ant builder tool then i checked one by one the error messages. What i found ? javac compiler cannot clean compile because some of java codes are not imported properly. But IMO, those codes are right on. Then google in action, i search all about keyword that are appropriate with error messages. Finally, I know those errors are caused the long limitation of java class name, hmm i am jugde java is bad for this condition. FYI, java class name is limited until 71 character, there included package_name+class_name. But it will run properly in windows , why ? because windows separate package and class name, windows just know package only as directory, so we will never create java class name with more that 71 chars length, right ?. All of above are first answer for this problem. There is second answer that's coming from my friend in JUG milist. He said, this problem is not caused from java instead of from Operating System. Every OS have different behaviour for supporting file name (in that case for java class name), so older OS maybe have capability to support shorter file name length. Until now i am still confusing about those answers. But what i do is how to make scarab is running properly in sunOS, I make a little cheat by copying all of scarab's java classes from windows into sunOS. And it makes run, he4x this is an advantage of java ... Multi platform languange !!