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Is a class subclass of itself?
 
Desperado
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Not in Java.
 
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The complete reference by Patrick Naughton says it is - ie. every class is a sub class of itself. Only a "strict" sub class of a class cannot include itself.
 
Wanderer
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Different people in OOP have slightly different definitions of "subclass", but in this case the definition Naughton uses is not the one used in Java. The JLS has a precise definition of subclass which does not include the class itself - only other classes which are extended from it, and their "descendents". If you see the word "subclass" on the exam, you can assume this is the definition used.
 
Anonymous
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Originally posted by Jim Yingst:
Different people in OOP have slightly different definitions of "subclass", but in this case the definition Naughton uses is not the one used in Java. The JLS has a precise definition of subclass which does not include the class itself - only other classes which are extended from it, and their "descendents". If you see the word "subclass" on the exam, you can assume this is the definition used.


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