Within Buni most of the modules generally follow the Java Coding Conventions, this includes the mail and calendar servers. We ask that when supplying new modules you follow these conventions. But most important to us is consistency, we have a couple of modules that differ in style, e.g. webmail. When supplying patches to existing code, follow the coding conventions of the module that you are editing.
We also prefer that when supplying patches or committing to CVS that you do not mix whitespace changes and functional changes. Seperate the whitespace changes into a seperate patch or CVS commit.
Also it is not mentioned in the style guide, please use 4 spaces for indentation and not tabs.