Cannot form arrays of parameterized types Comparable<E>[] is illegal. Remedy: ArrayList<Comparable<E>>
Cannot reference type parameters in a static context (static
fields, methods, inner classes)
Cannot throw or catch generic types
Cannot have type clashes after erasure. Ex. GregorianCalendar
cannot implement Comparable<GregorianCalendar>
since it already implements Comparable<Calendar>, and
both erase to Comparable
