Design Patterns Course

About this course

A design pattern is a proven way to solve a common design problem.

Design patterns improve code, because they provide a tested solution, and make it easier to maintain the code.

This course shows you how to recognise recurring problems in object-oriented code, choose an appropriate pattern, and apply it without adding unnecessary complexity. You learn when patterns make code easier to understand and maintain — and when they make it worse.

The Design Patterns course is language-neutral and is intended for programmers working in object-oriented environments.

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Delegate reviews

Feedback from delegates who have attended this course:

I thoroughly enjoyed the course. I can definitely say that course content will help me fulfil my daily duties and assist with my currently role. The Facilitator is highly knowledgeable and always has valid and comprehensive examples. I definitely will recommend this course to the next person

P. Mahlangu

First National Bank (FNB) Lecturer: Lewis Virtual training
Happy with the instructor, the course was informative, would recommend it to developers.

B. Maphophe

Wesbank Lecturer: Lewis Virtual Training
The training was very informative and insightful. Wasn’t expecting to learn so much. But overall it was fun and interesting.

S. Kgoarai

First National Bank (FNB) Lecturer: Lewis Virtual training
The lecturer is very knowledgeable and extremely passionate about the course material

A. Rankapole

First National Bank (FNB) Lecturer: Lewis Virtual training
Lewis is an excellent lecturer with a vast amount of knowledge and experience. Incus Data’s venue, rest of the employees are great! Thanks!

P. Raubenheimer

Armscor Lecturer: Lewis Classroom training
Lewis has really catered this course to the modern concepts and I enjoyed the references and subtle jokes. Think a lot of programmers learn about patterns in varsity or some training, get thrown into the deep end of an organization with its set ways of doing things. This course was extremely informative and a nice refresher and new take on patterns. One thing that I take away is the emphasis on patterns being widely useful no matter the language, patterns not being a 100% fit for each scenario but rather a guide on how to approach design. Thanks again as always Lewis!

K. Smith

First National Bank (FNB) Lecturer: Lewis Virtual training
I have always wanted to learn about Java Design Patterns, and this course was very informative and closed the gap that I had. Thanks again Lewis for the great Lecture!!!

K. Kamasha

FNB Lecturer: Lewis Virtual Training
The training was interesting and very informative. Really enjoyed the energy of the lecturer that made learning fun!

M. Singh

First National Bank (FNB) Lecturer: Lewis Virtual training
Lewis is an excellent teacher through and through. Cool exercises were used to understand design patterns more and making it fun too

L. Mmoke

First National Bank (FNB) Lecturer: Lewis Virtual training

Intended audience

  • You are an experienced object-oriented programmer and want to improve the structure and maintainability of your code.
  • You work on systems where changes are becoming harder and debugging is taking longer.
  • You are a systems architect who needs a shared vocabulary for discussing design decisions and trade-offs.
  • You need to understand not only common design patterns, but also when patterns introduce unnecessary complexity.

Prerequisites

Before you attend the Design Patterns course:
  • You should have practical experience programming in an object-oriented language such as Java, C++ or C#.
  • You should already understand core object-oriented principles, including classes, inheritance, interfaces, and basic design concepts.
  • You should have either attended our Object-Oriented Analysis and Design Course or have equivalent experience in object-oriented analysis and design.

Course details

Price: R15,800 excluding VAT per delegate.

Included:

  • Electronic course material.
  • Attendance certificate (PDF).

Duration: 5 days.

Delivery: Virtual classroom
See how virtual training works.

See the course schedule for upcoming dates.

Booking information

Email your booking to info@incusdata.com. A purchase order, or completed enrolment form is sufficient.

We will confirm the booking and issue an invoice.

Course contents

Object-Oriented Foundations (Refresher)

  • Responsibilities, boundaries and collaboration.
  • Encapsulation and managing coupling.
  • Inheritance vs composition.
  • Interfaces and abstractions.
  • Common design weaknesses that lead to rigid code.

Design Principles

  • Design heuristics and trade-offs.
  • SOLID principles in practice.
  • Package cohesion and coupling.
  • MVC and separation of concerns.
  • Styles, patterns and idioms — what’s the difference?

Understanding Design Patterns

  • Patterns as reusable design decisions.
  • Recognising recurring problems.
  • GoF classifications: creational, structural, behavioural.
  • Patterns vs principles.
  • When patterns increase complexity.

Anatomy of a Pattern

  • Intent and applicability.
  • Structure and participants.
  • Collaborations and consequences.
  • Implementation considerations and trade-offs.

Creational Patterns

  • Abstract Factory.
  • Builder.
  • Factory Method.
  • Prototype.
  • Singleton (benefits and pitfalls).

Structural Patterns

  • Adapter.
  • Bridge.
  • Composite.
  • Decorator.
  • Facade.
  • Flyweight.
  • Proxy.

Behavioural Patterns

  • Chain of Responsibility.
  • Command.
  • Interpreter (overview).
  • Iterator.
  • Mediator.
  • Memento.
  • Observer.
  • State.
  • Strategy.
  • Template Method.
  • Visitor.

Practical Application

  • Refactoring existing code using appropriate patterns.
  • Recognising anti-patterns and over-engineering.
  • Evaluating pattern trade-offs in real systems.

Additional Patterns

  • Simple Factory.
  • Null Object.

Download the course outline

Download the Design Patterns course outline in PDF format.

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