Interface example in java

public class First {

public static void main(String[] args) {
// TODO Auto-generated method stub
Second obj = new Third();
obj.display();
obj.fine();
}

}

public interface Second {

void display();

void fine();

}

public class Third implements Second{

public void display(){

System.out.println("One");

}

public void fine(){

System.out.println("Two");

}

}

output:-

One

Two