Data Structures and Algorithms in Java
Data Structures and Algorithms in Java
6th Edition
ISBN: 9781119278023
Author: Michael T. Goodrich; Roberto Tamassia; Michael H. Goldwasser
Publisher: Wiley Global Education US
Expert Solution & Answer
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Chapter 2, Problem 8R

Explanation of Solution

Extending the interfaces:

Yes”, it is possible to extend two interfaces exclusively.

Interface:

The interface is similar to the class and it can be declared with the keyword interface.

  • The interface does not contain any constructors with it and all the methods in the interface are “abstract”.
  • A class only “implements” the interface and it cannot “extends” the interface.
  • But the interface can extend multiple interfaces.
  • The interface extends another interface using the “extends” keyword in java.
    • While extending the interface, the child interface inherits the methods of parent interface.

Sample code:

//Declare the interface Animal

public interface Animal

{

  // Create the method run()

  public void run();

}

//Declare the interface Goat that extends Animal interface

public interface Goat extends Animal

{

  // Create the method

  public void milk();

 &...

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