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You can declare reference variables to have an interface type and use them just as you would use reference variables declared to be the type of a class in an inheritance hierarchy. (T / F)

   You can declare reference variables to have an interface type and use them
just as you would use reference variables declared to be the type of a class
in an inheritance hierarchy. (T / F)

Introduction to Programming with Java: A Problem Solving Approach

Introduction to Programming with Java: A Problem Solving Approach

John Dean, Ray Dean 3rd Edition

Chapter 14, Problem 14

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Reference variables are used to refer to objects in memory, and they can be declared with different types, including class types and interface types. Show more…

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You can declare reference variables to have an interface type and use them just as you would use reference variables declared to be the type of a class in an inheritance hierarchy. (T / F)

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