Behavioural Patterns

Memento Pattern

• Undo in text editor

Observer Pattern

• WeatherStation broadcasting temperature to DisplayDevice

Strategy Pattern

• PaymentService processing Payments with PaymentStrategy

Command Pattern

• Bold, Italic Command Buttons – Generic button

Template Pattern

• DataParser – JSONParser, CSVParser

Iterator Pattern

• Java Iterable – .hasNext(), .next()

State Pattern

• TransportationService – ETA/Directions based on TransportationMode

Mediator Pattern

• ChatUser sending messages to other ChatUsers in a ChatRoom