I think if you have to ask, the Air (with memory maxed) will be fine. The Pro is a safe bet to. Something to think about - if you are doing the majority of yo

I think if you have to ask, the Air (with memory maxed) will be fine. The Pro is a safe bet to. Something to think about - if you are doing the majority of your work on the laptop screen, I do find its nice to have a 15". I have a quad-core Linux desktop with 12gb of RAM. And an 11" Air with 4gb of RAM. For Java development I find them both adequate, unless I'm working with an 8gb dataset - but that might fall more into the testing category.