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A Design and Implementation Exercise
in Java


Prof. David Bernstein
James Madison University

Computer Science Department
bernstdh@jmu.edu

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Motivation
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  • Review:
    • Recall that we considered different ways of implementing checklists
  • Now:
    • We want to design and implement a more robust system for determining if a set of complicated requirements has been satisfied
  • Examples:
    • Graduation requirements
    • Legal/contractual requirements
    • Medical requirements
User Needs - Encapsulating Requirements
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  • Satisfaction Criterion:
    • Must be very flexible
  • Individual Requirements:
    • Must be able to use the system in a wide variety of contexts
  • Combining Requirements:
    • Must be able to combine requirements using "and" and/or "or"
    • Need not worry about "\(m\) of \(n\)" situations for now
User Needs - Satisfying Requirements
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  • Basics:
    • Must be able to determine if an item satisfies a requirement
  • "Double" Counting:
    • One item can satisfy multiple requirements
User Needs - A Prototype
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  • The Context:
    • Graduation requirements
  • Types of Criteria to Include:
    • Complete a course with a minimum grade
    • Complete a course in a particular department
There's Always More to Learn
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