In order to make it easier to compare and merge code, everyone in the team must set his development environment to format code the same way as others.
You must set Eclipse to use this code style Formatter: Java Code Style Formatter for Squale
To achieve that, go to "Java -> Code Style -> Formatter" in the Eclipse preferences, and import the file: your workspace will be configured to use it.
Before committing code to Subversion, please make sure that it is well formatted according to this code style. The best way to achieve that is to get used to doing "Ctrl + Shift + F" each time you are about to save code.