In this assignment you are to create a parent class (Ship), two child classes (CruiseShip and CargoShip) and a class that will demonstrate the three classes developed. The variable and methods of each class are specified below.

Please note:

• The methods specified are similar to those we have developed in other exercises eg. toString methods return a string, equals methods return a boolean.
• The yearBuilt of a Ship must be 1900 - 2019 (inclusive), trap the user until a valid amount is input.
• The maximumPassengers of a CruiseShip must be > 0, trap the user until a valid amount is input.
• The cargoCapacity of a CargoShip must be > 0, trap the user until a valid amount is input.

Complete the following. Name the classes as detailed below.

• Design a Ship class:
  • that has the following variables:
    • private String name
    • private int yearBuilt
  • and the following methods
    • Default constructor
    • Constructor that accepts argument for name and yearBuilt
    • Accessors (getters)
    • Mutators (setters)
    • A toString method
    • An equals method
• Design a CruiseShip class that extends the Ship class:
  • that has the following variable:
    • private int maximumPassengers
  • and the following methods
    • Default constructor
    • Non-default constructor that accepts argument for maximumPassengers
    • Accessors (getters)
    • Mutators (setters)
    • A toString method
    • An equals method
• Design a CargoShip class that extends the Ship class and has the following:
  • that has the following variable:
    • private int cargoCapacity
  • and the following methods
    • Default constructor
    • Non-default constructor that accepts argument for cargoCapacity
    • Accessors (getters)
    • Mutators (setters)
    • A toString method
    • An equals method.
• Write a class, name it Navy_yourInitials.java, where yourInitials represent your initials, in which you declare an array of 3 ships. Using input from the user create an instance of a Ship, a CruiseShip and a CargoShip and populate the array with those instances. After population of the array iterate through the array and have each instance call its toSting method and print the returned string.
• Submit all 4 files.