Java program using OOP concepts (abstract, interfaces, polymorphism)
in this programming assignment, you will build a Java-based simulation tool based on the live
poll idea (Mentimeter) we used during the class. This is going to be a pure desktop-based
console program, WITHOUT web interactions or graphical UIs required.
The basic functions of the system include:
1) Configure the question types and candidate answers. It should support 2 types of
questions: 1) multiple-choice question (more than one choice can be chosen including
one choice); 2) single choice question (only one choice can be chosen). For each type,
you can configure the candidate answers, such as “A”, “B”, “C”, “D”, or “1.
Right”, “2. Wrong”, etc.
2) Allow students to submit answers. Every student has a unique ID (String), and can
submit an answer to the iVote service.
3) The Voting Service can be first configured with a given question type and candidate
answers. Then, it can start accepting submissions from students. The important thing to
keep in mind about accepting submissions is that each student can only submit one
answer. If multiple submissions are received from the same student, only the last
submission will be counted.
4) The Voting Service can also output the statistics of the submission results. You don’t
have to use the graphical interface. Simply use the standard output (System.out) to
print out the count for each answer. For example, “A : 5, B : 12”, or “1. Right :
15, 2. Wrong : 20”. Feel free to customize the format for your output.
5) You need a SimulationDriver to automatically simulate the whole process. Basically,
the driver will 1) create a question type and configure the answers; 2) configure the
question for iVote Service; 3) randomly generate a number students and the answers; 4)
submit all the students’ answers to iVote Service; 5) call the Voting Service output
function to display the result.
You should write the program in Java, and follow the important Java OOP principles we have
learned so far.
The minimum core concepts (classes) you probably need to have are:
1) Student
2) Question
3) VotingService
4) SimulationDriver
Of course, other classes, subclasses or interfaces may be needed depending on how you
design and implement the system.
SimulationDriver should contain a main() method that triggers the whole process.
You can
randomly generate the IDs and answers for a group of students to simulate the submission
process and check the results.
This programming assignment is very open.
