Big Java Late Objects
Big Java Late Objects
2nd Edition
ISBN: 9781119330455
Author: Horstmann
Publisher: WILEY
Expert Solution & Answer
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Chapter 9, Problem 13RE

a.

Explanation of Solution

Given statement:

C c = (C) i;

The given statement will not throw an exception.

Explanation:

  • Given that “i” is declared as, “I i = new C();”.
  • An interface type can refer to the type of any class that implements the interface.
  • When the programmer stores an object in an interface reference, it is necessary to cast from interface to classes.
  • The cast notation is used to cast from interfaces to classes...

b.

Explanation of Solution

Given statement:

J j = (J) i;

The given statement will not throw an exception.

Explanation:

  • Given that “i” is declared as, “I i = new C();”.
  • An interface type can refer to the type of any class that implements the interface.
  • When the programmer stores an object in an interface reference, it is necessary to cast from interface to classes...

c.

Explanation of Solution

Given statement:

i = (I) null;

The given statement will not throw an exception.

Explanation:

  • Given that “i” is declared as, “I i = new C();”.
  • An interface type can refer to the type of any class that implements the interface.
  • The cast notation is used to cast from one object type to another object type...

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Chapter 9 Solutions

Big Java Late Objects

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