interface example java program

Callback.java

interface Callback

{

        public void call(int param);

}

Client.java

class Client implements Callback

{

        public void call(int p)

        {

                System.out.println("Interface Method = " + p);

        }

        public void nonIfaceMeth()

        {

                System.out.println("Non Interface method is also used");

        }

        public static void main(String args[])

        {

                Callback c = new Client();

                c.call(5);

       //         c.nonIfaceMeth();

        }

}