Mr. Tony sells guitar mandolin and banjo these three types of musical instrument in his store. He uses a paper-based system to keep track of his instruments. He requires a computer-based system to store his inventory and a new search tool to help him match up his customers dream instrument.
A serial number and a price are unique to all the instruments. For musical instrument choice the client provides only the general properties of an instrument and not the unique properties. For example to choice a guitar the client gives the name of the builder model number of strings back wood and top wood information. The type could be acoustic or electric. The builder could be Fender Martin Gibson Collins Olson Ryan PRS or any other. The back wood or top wood could be made of Indian rosewood Brazilian rosewood Mahogany Maple Cocobolo Cedar Adirondack Alder or Sitka. The model name for guitar doesnt have a limited set of values like the builder and wood. Banjos have same properties like guitars.
For mandolin all the specifications are same except the number of strings. Mandolins normally come with 4 pairs of strings. An extra specification style needs to be added with mandolin. Mandolins can come in several styles like an A style or an F style.
Design the software for Tonys store using ObjectOriented principles like Inheritance Polymorphism Abstraction and Encapsulation. Draw the class diagram for your design using UML notation and briefly explain your design choices.