Cyclic reference in java [closed]

Answer 1

Yes it is acceptable, in as much as the compiler stores calls to the other class as method name plus signature: parameter types, again as text.

I have even seen following horror

interface A {
    final A = new B();
}

class B implements A {
}

Java is loosely bound; there are corresponding runtime exceptions thrown. The same is compiling against another version of a library jar, and running with a jar with broken API.