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comparison of List & ArrayList

 
Greenhorn
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hi experts,

what is the difference between the two :

List list= new ArrayList();

ArrayList list = new ArrayList();

thanks in advace!
 
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It is something called Coding to the interface.
With the first- We could assign instances of anything which implements List- ArrayList, LinkedList, Vector to the list reference
In the second case- We can assign instances of ArrayList only.
 
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