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Explanation for the statements

 
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Hi friends

Pls give some detail explanation with example for the following statements from KB book


" A Single object can be referred to by reference variable of many different types - as long as they are the same type or a super type of the object"
 
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Consider this example.



There is only one D object created, but it can be referred to as an A, a B, a C, or a D.
 
Sathya Shanmugam
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thanks Keith, now I understood the statement clearly with your example.
 
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