There aren't strict rules about the code style but try to follow the already existent style within the usual Java conventions.

Also the actual commiters of navtable use the following Eclipse configuration, for the Save Action Preferences, that helps to maintain some coherence on the code:

• Organize imports
• Convert control statement bodies to block
• Remove unused imports
• Remove trailing white spaces on all lines
• Correct indentation
• In "Java Code Style > Formatted" section should have "Java conventions".

More info:

• Agreement on mailinglist: https://lists.forge.osor.eu/pipermail/navtable-devel/2011-March/000084.html
• Patches related: http://forge.osor.eu/tracker/?func=detail&atid=462&aid=15148&group_id=122
• Java conventions: http://www.oracle.com/technetwork/java/codeconv-138413.html