Interface

Interface

Interface sen

{

      void show();

}

class First implements sen()

{

  void show()

{

     System.out.println(“first”);

}

}

class all

{

public static void main(String args[])

{

     First f=new First();

     f.show();

}

}

Interface can be extended

interface A

{

    void show();

}

Interface B extends A

{

       void show1();

}

class c implements B

{

       void show(){System.out.println("a”); }

       void show1(){ System.out.println("b”); }

}