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What is the difference between extends and generalization in use case diagram?

 
Murali Mohan
Ranch Hand
Posts: 47
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Hi all,
What is the difference between extends and generalization in use case diagram?
Regards,
Murali
 
Ilja Preuss
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Sheriff
Posts: 14112
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You can find a good explanation at http://www.agilemodeling.com/essays/useCaseReuse.htm
 
It is sorta covered in the JavaRanch Style Guide.
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