Java Inheritance Concept.

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Anand KK

Java Inheritance Concept.
1 Answer(s) a year and 2 months ago
Posted in : Java Interview Questions

Yesterday i got confused with following question in an aptitude exam. Question:Class A,B,C have method named doit(). Class B extends Class A,Class C extends Class B.How will you call method doit() in Class A from Class C. ???? Options:1.super.doit()2.super.super.doit()3.A.this.doit()4.this.doit().

Is this a valid question?If so whats the answer?Is super.super a valid one.??? Regards, Anand

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March 6, 2012 at 5:37 PM

hi anand , what about the access modifier of the method ,also super.super is not a valid one.i feel like the question itself is not clear. 1:super.doit() will invoke the classB doit() 2:super.super.doit(),compilation error 3:A.this.doit(),no idea..:) 4:this.doit();will invoke doit() in C

Sol:what i found is like ,u can put super.doit(); in B constructor and if u create the C object it will invoke A 's doit() ..,:)

Regards, yshak.

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