The JDBC driver vendor provides the implementation of the API. Please go thru the purpose of JDBC Drivers.

hi

that iner face have the reference which is getting from its implementing class

ex:

interface a;

class b implements a;

then a a1 new b();

a1.method();

like above interfaces also used for methods even though they dont have body

the above mean thare is the methods declared by a is implemented in b class

hi.....

for example..take SUN as example..they provides..only interfaces..that means..they give only NULL implementations..

i.e.what is the returntype of the interface..

what is the method & its arguments

like that.....so according to that we provide a boby to the interface later..with better accuracy..following some..standrds.

so it is better for third party vendory..who provides a body in better way......thats the reason interfaces are having much important im java