Almost none, well the only thing that is annoying is that type inference currently won't work within lambdas but otherwise it's great. We use Lombok on all our

Almost none, well the only thing that is annoying is that type inference currently won't work within lambdas but otherwise it's great. We use Lombok on all our Java services and have never had an issue (we do about 33million requests a day across these services so they are real battle tested and used code bases). Type inference, automatic builders, removal of getters and setters (@Data will automatically add getters and setters to the fields of a class) and (@Value will make the immutable version). I would never work in Java these days without being able to use Java 8/Lombok/Javaslang/Guava.