This post originated from an RSS feed registered with Java Buzz by Rod Waldhoff. Original Post: Are concrete parent classes a code smell? Feed Title: Rod Waldhoff: Java Channel Feed URL: http://radio-weblogs.com/0122027/categories/java/rss.xml Feed Description: about the Java programming language Latest Java Buzz Posts Latest Java Buzz Posts by Rod Waldhoff Latest Posts From Rod Waldhoff: Java Channel

Recently I realized that I've almost subconsciously been following a design heuristic that even I found surprising--I avoid concrete parent classes. Since coming to this realization, I've been struggling (and failing) to come up with a good case for an instantiable parent class. Is there a case for classes that are neither abstract nor final? Could concrete parent classes be a code smell?

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