import truck.Single; import truck.Truck; public class Main { public static void main(String[] args) { Car car = new Car(); car.setSeat(5); System.out.println(car.getSeat()); Bike bike = new Bike(); bike.setSeat(2); System.out.println(bike.getSeat()); Truck truck = new Truck(); truck.setSeat(4); System.out.println(truck.getSeat()); Single single = new Single(); } } class Car { int seat; public int getSeat() { return seat; } public void setSeat(int seat) { this.seat = seat; } }