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Casting of Objects

 
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Hey everybody,
Here is a code :

1) Compile and run without error
2) Compile time Exception
3) Runtime Exception
The answer given is a - I thought Sub s = (Sub) b; is a valis narrowing cast.
What do you say ?
Pallavi
Edited by Corey McGlone: Broke up long line in code section to preserve page formatting.
[ April 04, 2003: Message edited by: Corey McGlone ]
 
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This code gives a ClassCastException at runtime. You can not cast a parent class into a child class.
 
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i can add that if you change the code of constructing object as follows:
Base b=new Sub();
it'll compile and run successifully
 
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Pallavi,
I think the given answer is wrong. It compiles fine and then throw a run time error -ClassCastException.
You are right, the answer should be C or 3 : Runtime Exception
 
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