Michel,

No, only one copy of the subclass code is loaded and all instances of the subclass point it. And as you say each instance has it's own copy of all the subclass properties.

>At run time, will the code that was written in my objects be duplicated in memory for each instance of the object?
>I know that the properties will be duplicated for each instance of the object. I just want to make sure that it does not copy the code in memory for each instance of the objects.