Origin of hierarchical structuring

Question

Why are libraries located behind com/ or net/ directory structures?

Answer 1

This is agnostic to Flash, Flex or any language. It's been used for a long time in general software development. I believe it stemmed from the Java package structure, but I'm not sure. It's used because it's now a standard on how to do things and helps split up projects in a fairly unique way.

It normally goes like <domain extension>/<domain>/<project name>/<sub component>/<whatever>.