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Describe the observer design pattern

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Reference no: EM133229181

QUESTION 

1. Compare the notion of "design pattern" to "responsibility pattern".

2. What are the advantages of design patterns? 

3. Describe the Observer design pattern.

4. Illustrate your answer in (c) with UML diagrams to show:

• Interactions, and

• The static structure of the system.

5. Describe the advantages provided by the Observer design pattern.

Reference no: EM133229181

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