We want you to contribute to the Mac OS X Port of OpenJDK!
There are only a few things you need to do:
We have a few resources to help you get started with Cocoa and AppKit if you aren't already familiar with them.
We also have a few pages about how we develop Java on Mac OS X
- Java vs. AppKit Threading Manifesto
- ObjC Memory Management and JNI
- Java2D Graphics Design Plan
- Mac OS X Port Dtrace Probe Implementation