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Interface inheritace

sam liyanage
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Joined: Nov 25, 2008
Posts: 1087
is that true interface doesn't support inheritance?
then what happen when we extends one interface to another
Hector Tenedero
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Joined: Oct 13, 2008
Posts: 31
This should clear things out
sam liyanage
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Joined: Nov 25, 2008
Posts: 1087
No,i didn't get the answer
is interface support inheritance
tell me "yes or no"
Jesper de Jong
Java Cowboy
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Joined: Aug 16, 2005
Posts: 14114

An interface can extend another interface, and so an interface can inherit method signatures from another interface. So yes, interfaces do support inheritance.

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Larry Frissell
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Joined: May 16, 2008
Posts: 82
Jesper, I am not sure that I agree, I guess the answer would depend on the meaning of "inheritance". In the Sun tutorial in the discussion of inheritance it states "Object-oriented programming allows classes to inherit commonly used state and behavior from other classes". In the discussions of interfaces they use the term "extends" when they rewrite the interface, but not inherit.

My point is that you can add methods to an interface, but you can not inherit the state or behavior.
It is sorta covered in the JavaRanch Style Guide.
subject: Interface inheritace