代写CSE1OOF/CSE4OOF Programming Assessment代写Java程序

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CSE1OOF/CSE4OOF Programming Assessment

Create an object-oriented design from a problem description, and implement as a working Java program

Assigned to students 2 September 2024

Due Sunday 6 October @ 11:55pm (end of Week 9)

Worth 20% of your final marks

Late penalty 5% per day

You will, using object-oriented principles, design a set of interrelated classes and implement them as a Java program. Do you have the time?

Specifically, you will create and document a program for converting, storing, and modifying date and time values in a variety of different formats.

Part I: Date, Time, and DateWithTime (10 marks)

You will implement three classes Date, Time, and DateWithTime. A date consists of a day, a month, and a year; a time consists of hours, minutes, and seconds. Create these three classes with the appropriate variables. For now, just implement one constructor and accessor/mutator methods as needed.

Part II: Instantiate classes with keyboard input (30 marks)

You will implement a class, DateTimeTester, that can be run (that is, has a main function) and is able to instantiate Date, Time, and DateWithTime objects (that is, they are in the same package).

You will also implement the .toString() method in each of the original classes so that it prints out the date, time, or date+time in a reasonable format.

Implement the main function such that you can create a Date, a Time, and a DateWithTime with keyboard input. You should be able to choose which type of object you are creating.

Part III: Write functions to instantiate objects with random values (30 marks)

You will implement a single-parameter constructor for each of Date, Time, and DateWithTime that takes a single boolean value. If that value is false, the object will be initialized with reasonable default values. If that value is true, the object will be initialized with random values in the appropriate ranges.

You will then modify DateTimeTester to enable the user to create random Dates, Times, and DateWithTimes.

Part IV: Make your Dates and Times as flexible as possible (30 marks)

There are many possible date formats: DD/MM/YYYY (i.e. 02/09/2024), DD/MM/YY (02/09/24), MM/DD/YYYY (09/02/2024), MM/DD/YY (09/02/24), 02 September 2024, 02 SEP 2024, September 02 2024, Sep 2 2024, and more besides. Dates are complicated, as we all know.

You will implement a single-parameter constructor for Date that takes a string and, assuming it is in a “reasonable” format, successfully creates the appropriate date. (Note that you might not always be correct; DD/MM/YYYY and MM/DD/YYYY are sometimes interchangeable – as with 02 September (2/9 or 9/2 are both valid values) – and sometimes not – as with 20 September (20/9 can only mean 20 September, it cannot mean the 9^th of the 20^th. Make reasonable assumptions and document them in the comments.)