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Cast to interface reference and the class refernece that implementing the interface.is it possible?

 
Slaxmi Raj
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Can any one please explain the below statement with example(Not getting to my knowledge because i am the beginner).
A reference variable can be declared as a class type or an interface type. If
the variable is declared as an interface type, it can reference any object of any
class that implements the interface.
 
Winston Gutkowski
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Slaxmi Raj wrote:Can any one please explain the below statement with example(Not getting to my knowledge because i am the beginner)...

List<String> = new ArrayList<String>();

Winston
 
Campbell Ritchie
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The raw type version might be easier to visualise.
 
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