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overrding conflicts...

 
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Hello all,
Pleas justify the following errors....

Scenario 1:

Now the error is toString() in A cannot override toString() in java.lang.Object; attempting to use
incompatible return type
1.1)Does it mean that Interfaces also implicitly extend Objects methods??
1.2)Is there any workaround for this other than changing return type back into String??

Scenario 2:

Here The following error(s) happen when both lines (8,9) are commented or one of them or none of them were commented...
" otherMethod() in B cannot override otherMethod() in C(sometimes A here); attempting to use incompatible return type"

2.1)Is this kind of scenario prohibited ??
2.2)If not , What is the solution for this???

Thanks in advance...
 
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Read this part of JLS. Your interface A will have an implicit declaration of public String toString() method...
 
Hareendra Reddy
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Thank you Ankit..
It cleared my doubt regarding scenario 1..
What about scenario 2 ??
 
Ankit Garg
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There is no direct solution for scenario 2. If your class inherits two methods with same signature but different return types, then you can't override them. If there are two interfaces with a method which has same signature except for the return type, a single class cannot implement both the interfaces...
 
Hareendra Reddy
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Thank you Ankit...
 
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