AskMe

People ask questions and others answers them

files-based system ( serialization technique )

• Every time the user run it, you see the previous state (users/questions/answers)
• Multiple users can use it in same time (parallel)
• You send question. I see it
• I answer the question or remove it, you see this update

Login/Sign up/Sign Out

• Any system allow a user to sign up (username, email, password)
• Also: As a user do you allow anonymous questions?

User operations

• Print questions: From you, To you, Feed Questions
• Ask and answer questions.
• Delete a question

Every user has a system generated ID

• Same for every question

A thread question

• If a question is answered. Others can ask questions in the original question thread
• E.g. original question is parent for all of them
• If this parent question is removed, the whole thread is removed

Correctness

• You can’t do something wrong!
• E.g. you can only remove your question which asked to someone else.
• You can only see/edit the details of your question.
• Read the note above the Controller class.

Screen shots