Hi Friend,

Try the following code:

class Vehicle {
void test(){}
}
class Bus extends Vehicle{
void test()
{
System.out.println("I am a bus");
}
}
class Car extends Vehicle{
void test()
{
System.out.println("I am a car");
}
}
class Bike extends Vehicle{
void test()
{
System.out.println("I am a bike");
}
}
public class Polymorphism{
public static void main(String[]args){
Vehicle[] v = new Vehicle[3];
v[0]= new Bus();
v[1]=new Car();
v[2]=new Bike();
for(int i=0;i<v.length;i++){
v[i].test();
}

}
}

Thanks