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();

 &...