Virtual table in class without overloading

[Andrey via Digitalmars-d-learn]

Hello,
I have some questions about virtual table in classes.
Example 1:
class Test
{
    void someMethod() { ... }
    int anotherMethod { ... }
}

Will this class have a vtable?

Example 2:
class Test2 : Test
{
    void thirdMethod() { ... }
}

Will this class have a vtable?

In C++ these classes don't have any vtables. What about D? In D 
all methods are virtual by default in classes. Will complier 
optimize and remove table of virtual functions because in these 
examples we see no method overloading.

Thanks.