This book is fine. I don't have it with me right now to tell you the exact location where they expain this but go through the chapter about polymorphism carefully.
Paul.
About Question enthuware.ocajp.i.v7.2.996 :
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Re: About Question enthuware.ocajp.i.v7.2.996 :
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Re: About Question enthuware.ocajp.i.v7.2.996 :
I would disagree. The book is rubbish about this topic. For example it doesn't explain what upcast is or Substitutability.
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Re: About Question enthuware.ocajp.i.v7.2.996 :
Very good explanation in this book - "Mala Gupta - OCA Java SE 8 Programmer I Certification Guide-Manning Publications (2016)", Chapter 6.6.2 - Binding of variables and methods at compile time and runtime
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