How to prevent imports of packages from all classes except one class?

Question

I migrate my code from Common Collection 3 to Common Collection 4 After the migration I want to prevent imports of Common Collection 3 packages in all classes except one class.

(Unfortunately I do not have time to migrate this class).

I have found this but I can not find how to configure exclude list: http://checkstyle.sourceforge.net/config_imports.html#IllegalImport

Is it possible to configure checkstyle to exclude classes?

Other tools that can do it?

Answer 1

If you are ok with configuring Checkstyle rules to achieve this, then you just need to use a more complex option (IllegalImport has only one parameter - illegalpackage):

ImportControl .

Answer 2

Remove from your classpath anything that you don't want imported. Then, it will error on those imports when you are compiling.