A person has a firstName, lastName & email address.

Teachers & Learners

A teacher teach 1-more subjects. They can only teach subjects they are qualified for.

A Learner needs to be registered for 3 subjects before that can attend any lesson.

Lessons & Subjects

Lessons are for a given Subject. Learners can only attend Lessons for Subjects they are registered for.

A Lesson is taught by a teacher - attended by learners. If there are less than 5 learners attending a Lesson is cancelled. A teacher earn 5 tokens for each lesson teached. A Lesson has a teacher, time and subject. A learner can only attend one lesson at a time.

Notes & Tokens

Each time a learner attend a Lesson they are given notes. If a learner didn't attended a Lesson the can ask other learners who attended a Lesson for the notes.

Attending a Lesson earn a learner 3 tokens. Asking for notes costs 2 tokens. You can only ask for notes if you have enough tokens.

Asking for notes of Subjects you are not registered for costs 5 tokens.

Learners should keep track of Notes they have and if they earned it via lesson attendance or bought it.

At the end of each day a Learners should be able to see what notes and how much tokens they have.

Cafeteria

Tokens can be used at the Cafeteria to Buy Breakfast (4 tokens), Lunch (6 tokens) or an afternoon snack (3 tokens). A drink costs 2 tokens. The Cafeteria manager wants a total of daily tokens received. And also which Person bought what. Teacher gets a 25% discount in the cafeteria once they taught 5 lessons.

The Principal needs to know how many Lessons for each subject is taught on a day and how many Lessons have been cancelled for the day.

Instructions

Create all the Classes needed for this scenario. Wire them all together to model 1 school day.

• Use the the Java Collection Framework where needed.
• Focus on 1 school day only.
• Write JUnit tests. Use TDD! Write your tests first.
• No persistence is required.