Learn English – How to write “a class’s constructor”?

apostropheorthographypossessives

Possible Duplicate:
What is the correct possessive for nouns ending in s?

I want to write this sentence:

In a singleton pattern, a class's
constructor needs to be private
instead of public.

it is correct to write:

a classes constructor
a class' constructor
a class's constructor
a classes' constructor

Best Answer

That would be class' or class's, but I would rather change the sentence to avoid that altogether.

Also, as it's a specific pattern that is applied to a specific class, it would be more correct to refer to the pattern and the class instead of a pattern and a class:

In the singleton pattern, the constructor of the class needs to be private instead of public.

As the pattern is something that only is applied to a class, it can even be implied:

In the singleton pattern, the constructor needs to be private instead of public.