access modifiers in interface

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Hi to all,

As we know in an interface all methods must be public, we can not define private or protected methods. If we will try then compiler will give the error because its definition of the interface.

My question is why interfaces do not accept access modifiers other then public and what are the reasons behind it?

Thanks in advance :)
--Amit

Posted 22-Mar-10 21:30pm

am.net

Updated 23-Mar-10 1:36am

Saurabh.Garg

v2

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Solution 3

Because that's the interface definition (an interface is a contract).
What would be the sense of a private method in a interface?
:)

Posted 22-Mar-10 23:04pm

CPallini

Solution 1

Because that is the definition of an interface.
In C++ it is still possible to have access specifiers for an interface because an interface is nothing but a struct.

Posted 22-Mar-10 21:44pm

«_Superman_»

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Eugen Podsypalnikov · Accepted Answer · 2010-03-22T22:13:00

am.net wrote:
my question is, Why interfaces not accept access modifiers other then public, what is the reason behind this???

What would be a reason behind non-public interfaces ? :)

All non-public methods of a class could be accessed directly
(, if you have an appropriate this-context...
...that is not a case at an interface call) :)