write the following programs: Ram.java, Truck.java,LandVehicle.java and Vehicle.java.
public class Ram extends Truck { public static voidmain(String[] args) {
// your implementation }
public Ram() { // your implementation} }
public class Truck extends LandVehicle { public Truck() { // your implementation }
public Truck(String s) { // your implementation} }
public class LandVehicle extends Vehicle { public LandVehicle() { // your implementation }
}
public class Vehicle { public Vehicle() { // your implementation
