Lecture 0 Exercise

These are simple exercises to introduce you to the UML diagramming conventions. You may answer these using Pencil and Paper. If you are not familiar with a diagramming tool (e.g., xfig on UNIX) you might learn to draw them using the tool of your choice.

1.

Draw a diagram to show each of the following Basic UML modelling elements:

(a)

a class with

i.

Name: Window,

ii.

Attributes: origin, size,

iii.

Operations: open(), close(), move(), display();

(b)

an interface with name: ISpelling;

(c)

a collaboration with name: Sales Order Validation;

(d)

a use case with name: Place Order;

(e)

an active class with name: Event Manager and operations: suspend() and flush();

(f)

a component with name CheckPoint.java;

(g)

a node with name Server.

2.

Draw a diagram to show a package with the name: Race Analyser.

3.

Draw a diagram to show a message with the operation name: display exchanged between objects in an interaction.

4.

Draw a diagram to show a state with the name: Waiting.

5.

Draw a diagram to show a note with the text ``using Pseudo Random Function''.

6.

Draw a diagram to illustrate each of the following relationships:

(a)

Dependency;

(b)

Association with multiplicity and role names;

(c)

Generalisation;

(d)

Realisation.

7.

Use adornments to show an abstract class with name: Transaction and two public operations execute() and rollback(), a private operation timeStamp() and a protected operation priority().

8.

For each of the following give an example diagram to show the difference between

(a)

a class and its objects;

(b)

an interface and its implementation.

9.

Give an example diagram to illustrate each of the following:

(a)

Stereotype class;

(b)

Tagged values;

(c)

Constraint.

10.

A University Course Registration System uses Course, Course Offering, Student class with some suitable class stereotypes, attributes, operations, and relationships. Give a Class diagram showing appropriate

(a)

Class stereotypes, names, attributes, operations;

(b)

Associations, aggregations, multiplicities and navigation.