In Java, generics is a possibility to parametrize any type (not just a container) with another type. Just like in any other language that support generics. If

In Java, generics is a possibility to parametrize any type (not just a container) with another type. Just like in any other language that support generics. If you limit generics in Java to container types only (like at the original link), it would be absolutely more correct to call the result "homogenous containers". Take Callable<T>, for example. This is a generic type that is not a container and is not in the scope of project at the OP's link.