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Polymorphism

 
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Polymorphic method invocations apply only to instance methods. You can
always refer to an object with a more general reference variable type (a superclass
or interface), but at runtime, the ONLY things that are dynamically selected
based on the actual object (rather than the reference type) are instance methods.
Not static methods. Not variables. Only overridden instance methods are
dynamically invoked based on the real object's type.
Can any one elaborate on above lines.
Thanks in advance
 
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Only overridden instance methods are
dynamically invoked based on the real object's type.



It means at runtime jvm will look reference inside the reference variable and will find out on the heap what is the actual object- subclass object or superclass object and then it will call the method on it....
so if there was subclass reference inside so subclass method will get execute...
[ July 06, 2007: Message edited by: raj malhotra ]
 
Divya Gehlot
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thanks I got it
 
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