Question: Construct Phone abstract class as parent class, makedial ( ) and makemessage ( ) are abstract methods. Construct Smartphone as a child class for Phone.

Construct Phone abstract class as parent class, makedial

()

and makemessage

()

are abstract methods. Construct Smartphone as a child class for Phone. Construct iphone as a child class for Smartphone. And implement two interfaces Printer and Wifi in iphone class.

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