Originally Posted by
helloworld922
.rar is kind of "un-common" in the java world (not unused, just uncommon)
most people use .zip (because of the native windows support), .jar (because of the native Java support and potential to pack a program/source into one file), or tar balls (the most common format used with linux systems). I have no idea what the most common format for macs it, but I'm assuming tar balls because mac's architecture shares some resemblance of unix systems, and thus linux systems (don't take my word for this, I don't use a mac regularly but have had to fumble my way through them sometimes).
Unfortunately, WinRar is not a publicly available program (proprietary program you have to pay for). I have 7zip, and it does support .rar files. In the future, perhaps you could upload a zip file instead? I think it's the most commonly supported across multiple platforms.
Okay thank you. In the other forums I am apart of winrar is more widely used.