Log Tool generates classes for us that violate checkstyle class naming policy - classes like :

org/switchyard/admin/AdminLogger_$logger.java
org/switchyard/admin/AdminMessages_$bundle.java

are generated. Log Tool complains about the $logger / $bundle part of the name (needs to be uppercased). I've filed an issue against Log Tool about it (LOGTOOL-81), but for now, we should just grant exceptions to *$logger / *$bundle.