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Design Patterns in Java - Adapter Design Pattern

Design Patterns 

There are 3 types:

  • Creational
  • Structural
  • Behavior


Adapter Designer

Convert interface into another interface








  • The client usually implement an interface

  • The interface is not always necessary
  • Don't add functinoallity

  • Ex.-
    • Integer[] array = new Integer[]{1,2,3};   
    • List<String> list = array.asList();




  • Client is the legacy class
  • Interface define the behavior for Client class
  • LegacyProduct implements Adapter interface but overwrite the methods to return the same as Client

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