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

Slaxmi Raj
Ranch Hand

Joined: Apr 20, 2012
Posts: 40
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
Bartender

Joined: Mar 17, 2011
Posts: 7718
    
  20

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
Sheriff

Joined: Oct 13, 2005
Posts: 38519
    
  23
The raw type version might be easier to visualise.
 
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subject: Cast to interface reference and the class refernece that implementing the interface.is it possible?