What is the use of package level protection in java?

Question

I know how package level protection in java works. I read a lot of code (including lots of open source stuff) and no-one seem to be using it. The whole protection l

Answer 1

Default protexction, ie "package" protection means it's private to the package, but can "see" anything that's not private to a class in the package. One use is for helper classes for the package; say you have a class that manages a pooled resource you don't want to make visible, you could put it in a default-protection class. Now it can be used by everything in the package, and it can access any protected internals of the other classes, but it's not part of the visible package to a user.