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basic question about ArrayList

 
Greenhorn
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why we instantiate ArrayList polymorphically.
List list = new ArrayList();
what is the disadvantage of
Arraylist list = new ArrayList();

 
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Eclipse IDE Windows XP Java
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to avoid to tieup with a specific implementation of List.

by the way, this discussion happened in javaranch many time. search here...
 
Seetharaman Venkatasamy
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