44.Runtime polymorphism using interface

 //Runtime polymorphism using interface

interface vehicle

{

void driver();

}

class car implements vehicle

{

public void driver()

{

System.out.println("Car = driver");

}

}

class bike implements vehicle

{

public void driver()

{

System.out.println("bike = driver");

}

}

class cycle implements vehicle

{

public void driver()

{

System.out.println("cycle = driver");

}

}

class r_t_p

{

public static void main(String[] args) {

vehicle ref;

ref = new car();

ref.driver();

ref = new bike();

ref.driver();

ref = new cycle();

ref.driver();

}

}

OUTPUT:

Car = driver

bike = driver

cycle = driver