Jaworski mock - an example of polymorphism (overriding or overloading?)

[sreelakshmi sarma]

Hi all,
I found this one in Jaworski's mock exam.
Which is an example of polymorphism.
a. inner classes.
b. anonymous classes.
c. method overloading.
d. method overriding.
I picked d. But the answer is c. Could some one please help me with this.
Thanks.

[Anonymous]

D) like you.
I think it's a typo in their answer.
JR

[Eric Barnhill]

I would also say d. Overriding is what causes a polymorphism issue, not overloading.

[Jim Yingst]

I also agree, and so I'll move this to Mock Exam Errata.

[VVed]

Method overloading is one of the ways that Java implements polymorphism.
Overridden methods allow Java to support run-time polymorphism.
ie. Overridden methods are another way that Java implements the "one interface, multiple methods" aspect of polymorphism.
this answer is according to my knowledge gained from a book called "The Complete Reference (JAVA2 third edition)"
please check pg.158(Overloading Methods) & pg.215(Overridden Methods)
if this is not the case then please give me a detailed explaination for this.

[Mahesh Hegde]

I think that both over-riding and overloading are forms of Polymorphism - "one interface, multiple implementations". But most of the OOP books claim that over-riding is the 'true polymorphism' as it allows runtime polymorphism.

Originally posted by VVed:
Method overloading is one of the ways that Java implements polymorphism.
Overridden methods allow Java to support run-time polymorphism.
ie. Overridden methods are another way that Java implements the "one interface, multiple methods" aspect of polymorphism.
this answer is according to my knowledge gained from a book called "The Complete Reference (JAVA2 third edition)"
please check pg.158(Overloading Methods) & pg.215(Overridden Methods)
if this is not the case then please give me a detailed explaination for this.