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OOAD 2 Interfaces and the Facade pattern
A bit about interfaces ,[object Object],[object Object],[object Object],[object Object]
“ Always Program to an Interface” ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Advantages? ,[object Object],[object Object],[object Object],[object Object]
Facade pattern ,[object Object]
Subsystem Class 1 Class 5 Class 4 Class 3 Class 6 Class 2
Subsystem Class 1 Class 5 Class 4 Class 3 Class 6 Class 2 Client class
Subsystem Class 1 Class 5 Class 4 Class 3 Class 6 Class 2 Facade Client class
Subsystem Class 1 Class 5 Class 4 Class 3 Class 6 Class 2 Facade Client class Client class 2
 
Facade pattern summary ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
When to use it? ,[object Object],[object Object],[object Object]

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Ooad 2 Interfaces And The Facade Pattern