MITS4002: Object Oriented Software Development - IT/ Computer Science - Report Writing Assessment Answer

Internal Code: 1AICAC Code: MITS4002

Object-Oriented Software Development Assessment Answer

Assignment Task: This project is based on the design, and implementation in Java, of the seven different Lottery games being Saturday Tattslotto, Oz Lotto and Powerball. Details of these games can be found at http://www.thelott.com In Part 1 of the project, you are asked to use arrays and inheritance to code versions of these games and in Part 2 to create an appropriate GUI that writes to a report file. Game Day Description Tattslotto - Saturday - 45 balls numbered 1 to 45, from which 8 balls are randomly selected. The first 6 balls are the winning numbers and the last two balls drawn are the supplementary numbers. Oz Lotto - Tuesday - 45 balls numbered 1 to 45, from which 9 balls are randomly selected. The first 7 balls are the winning numbers and the last two balls drawn are the supplementary numbers. Powerball - Thursday - 35 balls numbered 1 to 35 from which 7 are randomly selected. An eighth ball, the Powerball, is then drawn from a separate machine containing 20 balls numbered 1 to 20. You will notice from your research and examination of the table that all games have several things in common. All games • have a name, • run on a day of the week • have a set of randomly generated numbers. Also, each of the randomly generated numbers have a minimum and maximum possible value, for example: For Powerball, the minimum value is 1 and the maximum value is 35. An abstract class, LuckyGame can be used to represent the generic concept of a game of chance. A suitable partial design is shown in the following UML diagram. In the UML diagram: • The LuckyGame class represents the generic concept of a game of chance and therefore is to be declared as an abstract class. • The class TattslottoGame is a LuckyGame and it thus should implement code for LuckyGame’s two abstract methods as well as its own constructor and any other methods. • The games SaturdayTattslotto and Oz Lotto are all instances of the class TattslottoGame. • You can implement the remaining class games in any manner you believe appropriate. For example, class PowerBallGame can be implemented using either using o Option 1: the class PowerBallGame is a LuckyGame and thus should implement code for LuckyGame’s two abstract methods as well its own constructor and other methods. o Option 2: the class PowerBallGame is a TattslottoGame and thus should implement code for its own constructor and other methods. • You have been provided with some code for the class TestGames, which is a text-based application used to create instances of games and test all of their respective behaviours. • To collect user input for all games, a class UserInput is needed. It should collect user input and deal with any problems in the input, such as repeat numbers or numbers outside the possible range of values.

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