In the previous chapter, we discussed the Common Reuse principle. It was the second principle of package cohesion and it told us that we should put classes in a package that will be used together with the other classes in the package. If a user wants to use a class or a group of classes separately, this calls for a package split.
The third principle of package cohesion is called the Common Closure principle. It’s closely related to the Common Reuse principle because it gives you another perspective on granularity: you will get another answer on the question as to which ...
