COMP 504 Fall 2016	Lec04: UML Diagrams

Be sure that your COMM assignment document has been created and its URL submitted NOW!   DO NOT WAIT!

The document does NOT need to be completed in order to be submitted!  
Submitting your document URL early will ensure that peer reviewers can be properly allocated.  No further submission action is needed once the document URL has been submitted; the latest version of the document will always be the one that is graded -- no worries!

Quick UML primer:

• Boxes
  • Classes
    • Name, fields and methods
      • Concrete (regular type) vs abstract (italic type)
      • Chevrons sometimes used to denote interfaces.
      • Sometimes the "role" in which the class plays in the design will be also be noted.
    • Accessibility:  public (+), private (-), package (nothing)
  • Comments/Notes  (dog-eared)
• Lines:
  • Solid arrowheads -- generalization
    • solid line: inheritance
    • dotted line:implementation
  • Open arrowheads
    • solid line:  association ("has-a")  -- composition (with solid diamond end)  or aggregation (with open diamond end) or unspecified (no diamond end).   Java is always aggregation.
    • dotted line:   dependency ("instantiates", "uses", etc)

Use UML Lab to help you concentrate on the design of your system, its structure and behaviors, rather than on the Java syntax.

Using UML Lab

We will be discussing issues concerning composite shapes in class and continuing on to the next lecture.

© 2016 by Stephen Wong