Chapter 10. PC #10. Ship, CruiseShip, and CargoShip Classes (read instructions c

Question

Chapter 10. PC #10. Ship, CruiseShip, and CargoShip Classes (read instructions carefully) Design a Ship class that the following members: • A field for the name of the ship (a string). • A field for the year that the ship was built (a string). • A constructor and appropriate accessors and mutators. • A toString method that displays the ship’s name and the year it was built. Design a CruiseShip class that extends the Ship class. The CruiseShip class should have the following members: • A field for the maximum number of passengers (an int). • A constructor and appropriate accessors and mutators. • A toString method that overrides the toString method in the base class. The CruiseShip class’s toString method should display only the ship’s name and the maximum number of passengers. Design a CargoShip class that extends the Ship class. The CargoShip class should have the following members: • A field for the cargo capacity in tonnage (an int). • A constructor and appropriate accessors and mutators. • A toString method that overrides the toString method in the base class. The CargoShip class’s toString method should display only the ship’s name and the ship’s cargo capacity. In the main class, you should read the input file and create an array containing Ship, CargoShip, CruiseShip objects based on the information provided on each line. The file is in CSV (comma separated values) format. This means each line contains multiple data elements separated by comma. You can use Scanner class to input the data or if you know how to work with StringTokenizer you can also use it. Another option is to use the split() method in the String class. The first column in the file contains the ship type (“Ship”, “CruiseShip”, or “CargoShip”) as a String. The second column contains the Ship Name as a String. The third column contains Year Built as a String. The forth column contains different information for different ship types: For ship type = “Ship” - empty (ignore) For ship type=”CargoShip” - Cargo Capacity (int) For ship type=”CruiseShip” - Max Passengers (int)

In java language.

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Explanation / Answer

everything is perfect....neatly coded

you can do also:

ArrayList<Ship> list = new ArrayList<Ship>();

Ship ship1 = new CargoShip();

Ship ship2 = new CruiseShip();

lis.add(ship1);

list.add(ship2);

as CruiseShip, CargoShip are subclasses of ship, you can do it.

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