Java Design Patterns

Schedule

Our Design Patterns Course takes a total of 21 lectures. Each pattern is followed by a short group discussion and then some hands-on exercises to apply what we have learned. The course can be delivered either as classroom or as live virtual class. The classroom training would usually be done in a three day block. Here is the typical schedule:

• Day 1: Introduction, Proxy, Adapter, Facade, Composite, Template Method, Strategy
• Day 2: Iterator, Observer, Singleton, Factory Method, Abstract Factory, Visitor, Command
• Day 3: Memento, Chain of Responsibility, State, Flyweight, Bridge, Decorator, Conclusion
• The live virtual classes are presented via webinar and can be done over a longer period. For example, three lectures a week over a 7 week period. This gives students a longer time to assimilate the new information and to complete all of the exercises.
• Exercises:
• It is very important that students try to apply the pattern in code. We spend approximately 46% of our time doing active hands-on labs.
• During classroom courses, we check that everyone is indeed completing all the required tasks.
• With live virtual classes, we need to use another approach. Some of our clients have policies that their staff may not send out source code. This makes it hard for them to submit their solutions.
• Instead, at the start of each session, students have to confirm whether they have completed the previous exercise. Late arrival or abstentions are counted as a "no". We then spend ten to fifteen minutes going over our model solution to show what we expected from them.
• Timing of classroom course:
• Each days training starts at 9:00am and ends at 5:00pm, with one hour of lunch and 30 minutes of tea / coffee / nicotene breaks.
• Timing of live virtual sessions:
• Each session takes approximately an hour, including the group discussion and our look at the previous exercise solutions. Exercises for each pattern will take anything from fifteen minutes to an hour, depending on the skill and coding experience of the student.

Introduction

• Lay of the Land
• Why Learn Patterns
• What is a Design Pattern
• References Used in Course
• Unified Modeling Language (UML)
• Java Memory Management
• Java HotSpot Optimizations
• Modern Java Syntax

Abstract Class Pattern (PLoPD4)

• Abstract Class Pattern Exercise Walkthrough

Builder Pattern (Effective Java)

• Builder Exercise 1 Walkthrough
• Builder Exercise 2 Walkthrough

Essence Pattern (PLoPD4)

Memento Pattern

• Memento Pattern Exercise 1 Walkthrough
• Memento Pattern Exercise 2 Walkthrough

Proxy Pattern

• Proxy Pattern Exercise 1 Walkthrough
• Proxy Pattern Exercise 2 Walkthrough

Flyweight Pattern

Strategy Pattern

• Strategy Exercise 1 Walkthrough
• Strategy Exercise 2 Walkthrough

Null Object Pattern (PLoPD3)

• Null Object Exercise Walkthrough

Iterator Pattern

• Iterator Pattern Exercise Walkthrough

Factory Method (Refactoring)

Template Method Pattern

• Template Method exercise

Composite Pattern

• Composite Exercise Walkthrough

Visitor Pattern

• Visitor Exercise Walkthrough

Acyclic Visitor Pattern (PLoPD3)

• Acyclic Visitor Exercise Walkthrough

Object Recursion Pattern (PLoPD4)

Default Visitor Pattern (PLoPD3)

• Default Visitor Exercise Walkthrough

Adapter Pattern

• Adapter Exercise Walkthrough

Command Pattern

• Command Exercise 1 Walkthrough
• Command Exercise 2 Walkthrough

Decorator Pattern

• Decorator Exercise Walkthrough

Extension Object Pattern

Singleton Pattern

• Singleton Exercise 1 Walkthrough
• Singleton Exercise 2 Walkthrough
• Singleton Exercise 3 Walkthrough

State Pattern

• State Exercise Walkthrough

Facade Pattern

• Session Facade Pattern (JEE)

Prototype

Abstract Factory Pattern

• Abstract Factory Exercise Walkthrough

Interpreter Pattern

• Interpreter Exercise Walkthrough

Mediator Pattern

Observer Pattern

• Observer Exercise Walkthrough

Bridge Pattern

• Bridge Exercise Walkthrough

Chain of Responsibility Pattern

• Chain of Responsibility Exercise Walkthrough

Conclusion