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SCJP: Interfaces #Java Short Notes #SCJP

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Interface

  • An interface is a reference type, similar to a class
  • Interfaces can contain only constants, method signatures, and nested types
  • No method is implemented
  • Interfaces cannot be instantiated
  • They can only be implemented by classes or extended by other interfaces
  • Interfaces are not part of the class hierarchy
  • A class can implement multiple interfaces

From: http://sitestree.com/?p=4867
Categories:Java Short Notes, SCJP
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Post Data:2010-01-20 15:33:28

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