how i enumerate classes package supplement list?

i need enumerate classes package supplement list. non-dynamic chronicle unparalleled category goes this:

list allclasses = new arraylist();
allclasses.add(string.class);

how i boldly supplement classes package the subpackages?

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update: carrying review early answers, it's definitely loyal i'm perplexing solve another nominee problem, let me state it. i know illusory given collection it. new doubt .

update: reading again, i it's being misread. i'm looking enumerate project's classes record component after compilation.