Geomajas Community Documentation
As a general note, the coding style and naming conventions should be adhered to. Some parts are even checked by the checkstyle maven plug-in. However, deviations are always allowed when this enhances code readability.
Formatters are available for the style as described here (see bottom of document). You can be liberal on applying this on new code, but be prudent when applying these to the existing code base. Code style changes make revision changes a lot more difficult and should thus be limited. If there is a need to reformat existing code, then this should be done in a separate commit.