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[Java Programmer Certification Mock Exam (Dan Chisholm) wrong solution..

 
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i think the answer should be e . line no 2 marked in the question will never throw exception because we are not trying to use the reference variable "sub". but the answer given in the book is "d".[Java Programmer Certification Mock Exam
(Dan Chisholm)]
is it correct sir??
 
arch rival
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What happened when you compiled and ran the code?
 
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Exception in thread "main" java.lang.ClassCastException: Base cannot be cast to Sub
at Orange.main(Orange.java:10)



It is a compile time error as the object of the super type cannot to cast to its subtype. Yes you are correct as far as I think.
 
Rancher
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sudipto shekhar wrote:


Exception in thread "main" java.lang.ClassCastException: Base cannot be cast to Sub


It is a compile time error as the object of the super type cannot to cast to its subtype. Yes you are correct as far as I think.


What you posted is a runtime error, not a compile time error. But either way, "e" -which the first post suggested- is not correct.
 
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NOT wrong solution.

the option d is right.(RuntimeException at line number 2)

 
avi sinha
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thanks alot everyone..i got the point..i was a bit wrong.
 
sudipto shekhar
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Sorry
 
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