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Private constructors and subtypes
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Sven Jacobs
Greenhorn
Joined: Feb 03, 2009
Posts: 3
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After finishing the second chapter of the SCJP6 study guide a question came to my mind:
If there's a class A with only private constructors and a class B which extends A, then this code will never compile because sooner or later a constructor of B has to (implicitly or explicitly) call the super constructor of A which however is private.
Is that correct?
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Rob Spoor
Sheriff
Joined: Oct 27, 2005
Posts: 19216
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100% correct. It's another way of making classes final (although it should never replace the final keyword).
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SCJP 1.4 - SCJP 6 - SCWCD 5
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subject: Private constructors and subtypes
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