How to refactor duplicated code without using helper classes?

From: Sylvain (redhotsly_at_hotmail.com)
Date: 10/30/03 

Date: Thu, 30 Oct 2003 13:46:07 -0500

What is the correct way to refactor duplicated code?

Suppose you have Class A and Class B. Some code is duplicated in Class A and
Class B. If there is a base class for these classes or if it is justified to
extract a base class for Class A and Class B then I can move the code there.

However, if Class A and Class B do not have a base class and if it is not
justified to extract a base class, the simple way to resolve the problem is
to move the code in a public static method of a public helper class. But I
don't like helper classes and helper methods; they are too close to function
libraries and too far from OO.

In our project we now have at least 10 helpers classes with dozens of static
methods. I would like to get rid of them but I am not sure how to do so.

Thanks

Syl

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