looks like a pretty dead project plus no support for 64 bit architectures or mac. It’d be better to go for something like LWJGL which is more regularly updated and pretty much provides most the functionality of SDL.
old and dead
unfortunately, since I love SDL and use when I make games in C++
I know a French guy who succeeded in building SDLJava on Mac but he told me that it was really a painful process. This binding is quite buggy. I advice you rather to use some others APIs if you want to create 2D games, for example Slick, JGame…