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Foundations of Programming: Design Patterns

with Elisabeth Robson and Eric Freeman

Video: Welcome

Identifies seven object-oriented design patterns (including the singleton, observer, decorator, and factory patterns) that make your development process faster and easier.
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  1. 6m 7s
    1. Welcome
      1m 5s
    2. What you should know before watching this course
      3m 9s
    3. Using the exercise files
      1m 53s
  2. 5m 36s
    1. Understanding the need for design patterns
    2. What are design patterns?
      3m 1s
    3. Using design patterns
      1m 38s
  3. 20m 56s
    1. Understanding the pitfalls of inheritance and interfaces
      6m 47s
    2. Encapsulating code that varies
      2m 45s
    3. Programming to an interface
      3m 13s
    4. Setting behavior dynamically
      4m 41s
    5. Exploring the strategy pattern
      1m 48s
    6. Understanding why HAS-A is better than IS-A
      1m 42s
  4. 19m 32s
    1. Using the observer pattern in the real world
      1m 32s
    2. Exploring the observer pattern
      2m 19s
    3. Understanding the observer pattern
      1m 41s
    4. Implementing the observer pattern
      5m 43s
    5. Using Java's Observer and Observable classes
      2m 56s
    6. Implementing the observer pattern with Java's Observer and Observable classes
      3m 22s
    7. The advantages of loose coupling
      1m 59s
  5. 17m 35s
    1. Creating chaos with inheritance
      2m 43s
    2. Understanding the open-closed principle
      2m 21s
    3. Extending behavior with composition
      1m 40s
    4. Understanding the decorator pattern
      1m 59s
    5. Implementing the decorator pattern
      5m 44s
    6. Understanding decorators in Java libraries
      1m 29s
    7. Using decorators
      1m 39s
  6. 11m 26s
    1. What is the singleton pattern?
      2m 1s
    2. Understanding the classic singleton pattern
      2m 22s
    3. Implementing the classic singleton pattern
      2m 18s
    4. Dealing with multithreading
      1m 31s
    5. Improving the singleton pattern implementation
      3m 14s
  7. 16m 57s
    1. What is a state machine?
      3m 46s
    2. Revisiting the design for a state machine
      1m 50s
    3. Understanding the state pattern
      4m 39s
    4. Implementing the state pattern
      5m 23s
    5. Comparing the state and strategy patterns
      1m 19s
  8. 17m 24s
    1. Encapsulating iteration
      1m 3s
    2. Exploring the iterator pattern
      4m 53s
    3. Implementing the iterator pattern
      5m 35s
    4. Using Java's built-in iterators
      2m 25s
    5. Implementing with Java's built-in iterators
      2m 19s
    6. Making sure classes have only one responsibility
      1m 9s
  9. 17m 42s
    1. Encapsulating object creation
      1m 49s
    2. Understanding the Simple Factory idiom
      1m 52s
    3. Implementing the Simple Factory idiom
      5m 18s
    4. Exploring the factory method pattern
      4m 28s
    5. Implementing the factory method pattern
      4m 15s
  10. 6m 17s
    1. Looking at what we've done and where to go from here
      3m 28s
    2. Additional resources
      2m 49s

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Foundations of Programming: Design Patterns
Video Duration: 0s 2h 19m Intermediate


View Course Description

Design patterns are reusable solutions that solve the challenges software developers face over and over again. Rather than reinventing the wheel, learn how to make use of these proven and tested patterns that will make your software more reliable and flexible to change. This course will introduce you to design patterns and take you through seven of the most used object-oriented patterns that will make your development faster and easier. Elisabeth Robson and Eric Freeman, coauthors of Head First Design Patterns, join forces to provide an overview of each pattern and examples of the pattern in action. Featured design patterns include the strategy, observer, decorator, singleton, collection, state, and factory method patterns.

Topics include:
  • What are design patterns?
  • Encapsulating code that varies with the strategy pattern
  • Setting behavior dynamically
  • Implementing the observer pattern
  • Creating chaos with inheritance
  • Extending behavior with composition
  • Dealing with multithreading and the singleton pattern
  • Revising the design for a state machine
  • Encapsulating iteration with the collection pattern
  • Encapsulating object creation with the factory method pattern


>> Hi, I'm Eric Freeman and welcome to Foundations of Programming: Design Patterns. >> And I'm Elizabeth Robson. Together, Eric and I will be your tour guides for this course. >> So what are design patterns? They're solutions to common software design problems that occur over and over in software development. >> We'll start by showing you how to dynamically change the behavior of your classes with the strategy, decorator, and state patterns. Then we'll show you how to manage communication between objects with the observer pattern.

Next we'll show you how to manage object creation with the singleton pattern. And we'll show you how to encapsulate those aspects of your code that are likely to change with the iterator and factory patterns. >> I'll start off by giving you a broad overview of each design pattern to introduce the concepts and to describe how the pattern works. >> And then I'll dive a little deeper into the pattern, and show you how to implement a design in code. This is where you get to see the design patterns in action. >> We've got a lot to cover, so let's get started.

Find answers to the most frequently asked questions about Foundations of Programming: Design Patterns .

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Q: How do I import the exercise files in Eclipse?
A: Here are instructions for importing the files:
1) Save the download folder as any name you choose, such as DesignPatternsLynda. Place this folder in the default Eclipse project folder (the folder you choose when you start Eclipse).
2) Start Eclipse.
3) In Eclipse, choose File > New > New Java Project.
4) In the first New Project dialog box, use the folder name from step 1 as the project name. Check that the location path matches the default Eclipse project path and the name of the folder. (See NewProject.jpg.)

5) Click Next.
6) In this dialog box, leave all settings as is (see Step2.jpg):

7) Click Finish.
8) You should now have a project in Eclipse with the following structure (see EclipseProjectStructure.jpg):

9) To compile the code, open the folder you want to work with and choose the main class.
10) Choose Run > Run As > Java Application.





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