Java Program to create (a superclass and two subclasses) and Class diagram.

Background: Small Micro Java Program for Student beginner to use as a learning aid. The purpose of the program is to create a Super class to represent a gadget, together with two subclasses to represent a mobile phone and an MP3 player respectively. The completed solution should contain: a) Four files (Three Java files ([login to view URL], [login to view URL] and [login to view URL]) and Class Diagram) b) The code should be commented with a short description of what each method does. c) Create a class diagram showing the inheritance relationship between the three classes and, for each class, the name of the class, the data types and names of the fields and the return types and signatures of the methods. d) Documentation (Class Diagram and Commented Code). Full details are in the attached Java Program [login to view URL] document.