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polymorphic reference variables

 
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by declaring a reference variable of the superclass type and have that reference variable refer to an instance of a subclass type, WHATs the benefit? can anyone show an example?
 
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the benefit is dynamic method Dispatch, versioning, latebinding

[ September 29, 2007: Message edited by: Ameen khan ]
 
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See this post for a longer dicussion.
 
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