Design Patterns

Collection of the code examples from Head First Design Patterns (2004), translated to different languages.

• Chapter 1 - Strategy Pattern
  • SimUDuck
  • Adventure Game
• Chapter 2 - Observer Pattern
  • Weather Station
• Chapter 3 - Decorator Pattern
• Chapter 4 - Factory Pattern
• Chapter 5 - Singleton Pattern
• Chapter 6 - Command Pattern
• Chapter 7 - Adapter and Façade Patterns
• Chapter 8 - Template Pattern
• Chapter 9 - Iterator and Composite Patterns
• Chapter 10 - State Pattern
• Chapter 11 - Proxy Pattern
• Chapter 12 - Compound Patterns
• Chapter 13
• Appendix - Leftover Patterns

Python

Kotlin

Running the test applications

Each directory under the chapter directory represents a separate Gradle project. An executable .jar file can be built using:

// macOS
./gradlew clean build

// Windows
gradle clean build

The application can then be run using:

// macOS
java -jar ./build/libs/[application-name].jar

// Windows
java -jar .\build\libs\[application-name].jar