Is it possible, in Java, to enforce that a class have a specific set of subclasses and no others? For example: public abstract class A {} public final class B extends A {} public final class C ext...

I want to implement SIP calls in my application, and first problem, that I need to solve, is converting audio from compressed AAC format with ADTS header to linear PCM. My input data is an NSArray...

Suppose I'm using an interface with a generic type parameter interface Foo<T> { T getOne(); void useOne(T t); } The intention is that the type T is abstract: it enforces a type constrain...