JDBC-implementation of methods in INTERFACES

As I am quite new to JDBC.this might be a simple question but I think its quite enquiring.

We know that Connection,Statement,PrepareStatement ,Resultset are all interfaces but then how can we call method on them I mean:

Connection connection;

Statement stmt=connection.createStatement();

I want to know where are these method implemented ..

Please help

[399 byte] By [Surjan_Rawata] at [2007-10-2 0:43:53]

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# 1

They're implemented in the driver--the jar file that you put in your classpath.

When you start with Connection con = DriverManager.getConnection();

you get an instance of a class that implements that interface. Other calls get you instances of classes that implement the other interfaces. You don't konw or care about the details of the classes--not even what their names are. All you care about is that they implement those interfaces.

jverda at 2007-7-15 16:58:44 >

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# 2

Thanks for the reply .Surjan

Surjan_Rawata at 2007-7-15 16:58:44 >

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JDBC-implementation of methods in INTERFACES

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