End of the Chapter

You have reached the end of the chapter. You may wish to extend your knowledge by examining the following.

• What an interface interface is.
• How a class implement, interface implements an interface.
• Implementing implement, several interfaces several interfaces.
• An example of a interface, containing a constant constant in an interface.
• Using an interface as a interface, as a type type of a reference variable.
• Use of a type cast type cast with a reference variable.
• interface, public Public interfaces.
• interface, extending Extending an interface.