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java immutable


http://www.javapractices.com/topic/TopicAction.do;jsessionid=2F4CBB20346C10EACE27D48DD7DAD2AA?Id=23

The final keyword has more than one meaning :

  • final class cannot be extended
  • final method cannot be overridden
  • final fields, parameters, and local variables cannot change their value once set
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