Design Patterns

Design Patterns

This course is part of Software Design and Architecture Specialization

Instructor: Kenny Wong

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Assessments

4 assignments

Taught in English

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This course is part of the Software Design and Architecture Specialization

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There are 4 modules in this course

This course extends object-oriented analysis and design by incorporating design patterns to create interactive applications. Through a survey of established design patterns, you will gain a foundation for more complex software applications. Finally, you will identify problematic software designs by referencing a catalog of code smells.

You will be challenged in the Capstone Project to redesign an existing Java-based Android application to implement a combination of design patterns. You will also critique a given Java codebase for code smells. After completing this course, you will be able to: • Demonstrate how to use design patterns to address user interface design issues. • Identify the most suitable design pattern to address a given application design problem. • Apply design principles (e.g., open-closed, dependency inversion, least knowledge). • Critique code by identifying and refactoring anti-patterns. • Apply the model-view-controller architectural pattern.

Design patterns help to solve common design issues in object-oriented software. You will learn what they are and how they can be applied. In this module you will learn the creational and structural design patterns. You will continue to learn and practice expressing designs in UML, and code some of these patterns in Java.

What's included

9 videos8 readings1 assignment2 peer reviews

9 videosTotal 65 minutes

2.1.1 – What is a Design Pattern?6 minutesPreview module
2.1.2 – Creational, Structural, and Behavioural Patterns6 minutes
2.1.3 – Singleton Pattern5 minutes
2.1.4 – Factory Method Pattern11 minutes
2.1.5 – Facade Pattern6 minutes
2.1.6 – Adapter Pattern4 minutes
2.1.7 – Composite Pattern6 minutes
2.1.8 – Proxy Pattern7 minutes
2.1.9 – Decorator Pattern11 minutes

8 readingsTotal 80 minutes

Meet Your Presenter – Sam Jeffery10 minutes
Meet Your Facilitator– Cecilia Xiang10 minutes
Discussion: Introduce Yourself10 minutes
Discussion: Design Pattern Examples10 minutes
Design Patterns Course Notes - Updated July 202110 minutes
Design Patterns Glossary10 minutes
Ungraded Assignment - Adapter Pattern (Solution)10 minutes
Ungraded Assignment - Composite Pattern (Solution)10 minutes

1 assignmentTotal 30 minutes

Module 1 Review30 minutes

2 peer reviewsTotal 120 minutes

Ungraded Assignment – Adapter Pattern60 minutes
Ungraded Assessment – Composite Pattern60 minutes

You will continue learning useful design patterns and add them to your toolbox. In this module, you will learn the behavioural patterns. This will include communicating them in UML and coding them in Java!

What's included

5 videos5 readings1 assignment2 peer reviews

5 videosTotal 33 minutes

2.2.1 – Template Method Pattern7 minutesPreview module
2.2.2 – Chain of Responsibility Pattern5 minutes
2.2.3 – State Pattern6 minutes
2.2.4 – Command Pattern8 minutes
2.2.5 – Observer Pattern5 minutes

5 readingsTotal 50 minutes

Discussion: Undo/Redo As a Pattern10 minutes
Mediator Pattern10 minutes
Peer Review Request Forum10 minutes
Capstone Assignment 2.1 - Implement the Command Pattern (Solution)10 minutes
Ungraded Assignment - Observer Pattern (Solution)10 minutes

1 assignmentTotal 30 minutes

Module 2 Review30 minutes

2 peer reviewsTotal 120 minutes

Ungraded Assignment – Observer Pattern60 minutes
Capstone Assignment 2.1– Implement the Command Pattern60 minutes

You will learn a design pattern that is very useful for user interfaces: model-view-controller, or MVC. Then you will learn some principles underlying the design patterns, to create software that is flexible, reusable, and maintainable. Finally, you will learn some of the symptoms of bad design, which we call code smells or antipatterns.

What's included

8 videos4 readings1 assignment2 peer reviews

8 videosTotal 62 minutes

2.3.1 – MVC Pattern9 minutesPreview module
2.3.2 – Open/Closed Principle5 minutes
2.3.3 – Dependency Inversion Principle6 minutes
2.3.4 – Composing Objects Principle5 minutes
2.3.5 – Interface Segregation Principle4 minutes
2.3.6 – Principle of Least Knowledge7 minutes
2.3.7 – Part 1 - Code Smells11 minutes
2.3.7 – Part 2 - Code Smells12 minutes

4 readingsTotal 40 minutes

Ungraded Assignment - MVC Pattern (Solution)10 minutes
Capstone Assignment 2.2 - Implement MVC Pattern (Solution)10 minutes
Liskov Substitution Principle10 minutes
Discussion: Stories of Bad Coding10 minutes

1 assignmentTotal 30 minutes

Module 3 Review30 minutes

2 peer reviewsTotal 120 minutes

Ungraded Assignment – MVC Pattern60 minutes
Capstone Assignment 2.2 – Implement MVC Pattern60 minutes

In the previous modules, you were introduced to a variety of design patterns, and applied two of these to the example Android code base. Now, in the final module of the course, you will identify and fix specific code smells in this code base. After completing these tasks, you will be ready to complete the final exam.

What's included

4 readings1 assignment1 peer review

Instructor

Instructor ratings

4.6 (220 ratings)

Kenny Wong

University of Alberta

12 Courses431,137 learners

Offered by

University of Alberta

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Reviewed on Jun 3, 2021

The concepts had a lucid articulation. The course covered most of the design patterns including design principles behind them. I found it very useful.

Reviewed on Jul 2, 2020

The course was really recommended for a good kick start in design patterns and it would be more effective if you follow this course along with head first design patterns book

Reviewed on Aug 24, 2021

Wonderful course. It can enhance tour knowledge and give opportunity to explore more about design patterns. There are wonderful examples, assignments and quiz. I would highly recommend this course.

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