Design Patterns

Design Patterns

This course is part of Software Design and Architecture Specialization

Instructor: Kenny Wong

Access provided by Capgemini

103,543 already enrolled

4 modules

Gain insight into a topic and learn the fundamentals.

1,375 reviews

Intermediate level

Some related experience required

Flexible schedule

2 weeks at 10 hours a week

Learn at your own pace

91%

Most learners liked this course

4 modules

Gain insight into a topic and learn the fundamentals.

1,375 reviews

Intermediate level

Some related experience required

Flexible schedule

2 weeks at 10 hours a week

Learn at your own pace

91%

Most learners liked this course

Skills you'll gain

Tools you'll learn

Unified Modeling Language

Details to know

Shareable certificate

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Assessments

4 assignments¹

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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 videos Total 66 minutes

2.1.1 – What is a Design Pattern? 7 minutes
2.1.2 – Creational, Structural, and Behavioural Patterns 6 minutes
2.1.3 – Singleton Pattern 5 minutes
2.1.4 – Factory Method Pattern 11 minutes
2.1.5 – Facade Pattern 6 minutes
2.1.6 – Adapter Pattern 5 minutes
2.1.7 – Composite Pattern 6 minutes
2.1.8 – Proxy Pattern 7 minutes
2.1.9 – Decorator Pattern 11 minutes

8 readings Total 80 minutes

Meet Your Presenter – Sam Jeffery 10 minutes
Meet Your Facilitator– Cecilia Xiang 10 minutes
Discussion: Introduce Yourself 10 minutes
Discussion: Design Pattern Examples 10 minutes
Design Patterns Course Notes - Updated July 2021 10 minutes
Design Patterns Glossary 10 minutes
Ungraded Assignment - Adapter Pattern (Solution) 10 minutes
Ungraded Assignment - Composite Pattern (Solution) 10 minutes

1 assignment Total 30 minutes

Module 1 Review 30 minutes

2 peer reviews Total 120 minutes

Ungraded Assignment – Adapter Pattern 60 minutes
Ungraded Assessment – Composite Pattern 60 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 videos Total 33 minutes

2.2.1 – Template Method Pattern 7 minutes
2.2.2 – Chain of Responsibility Pattern 6 minutes
2.2.3 – State Pattern 6 minutes
2.2.4 – Command Pattern 9 minutes
2.2.5 – Observer Pattern 6 minutes

5 readings Total 50 minutes

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

1 assignment Total 30 minutes

Module 2 Review 30 minutes

2 peer reviews Total 120 minutes

Ungraded Assignment – Observer Pattern 60 minutes
Capstone Assignment 2.1– Implement the Command Pattern 60 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 videos Total 62 minutes

2.3.1 – MVC Pattern 9 minutes
2.3.2 – Open/Closed Principle 5 minutes
2.3.3 – Dependency Inversion Principle 6 minutes
2.3.4 – Composing Objects Principle 5 minutes
2.3.5 – Interface Segregation Principle 5 minutes
2.3.6 – Principle of Least Knowledge 7 minutes
2.3.7 – Part 1 - Code Smells 11 minutes
2.3.7 – Part 2 - Code Smells 13 minutes

4 readings Total 40 minutes

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

1 assignment Total 30 minutes

Module 3 Review 30 minutes

2 peer reviews Total 120 minutes

Capstone Assignment 2.2 – Implement MVC Pattern 60 minutes
Ungraded Assignment – MVC Pattern 60 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

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Instructor

Instructor ratings

(229 ratings)

Kenny Wong

University of Alberta

12 Courses 474,685 learners

Offered by

University of Alberta

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Reviewed on Mar 17, 2022

The course and the instructor was so good. The curriculum was well designed and of appropriate length. I really enjoyed and learnt skills that I would be able to apply while developing real software

Reviewed on Jan 23, 2022

Excellent course! Instructor easy description as well as lots examples helps me to solidify my object oriented and design pattern principles. Thank you so much for this course.

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.

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