Car.java

public class Car extends vehicle {
  
  public boolean sunroof, childSeat, electric;
  
  public Car(boolean x, y, z) {
    sunroof = x; 
    childSeat = y;
    electric = z; 
  }
  
  public boolean getSunroof() {
    return sunroof; 
  }
  public void setSunroof(boolean x) {
    sunroof = x; 
  }
}

  

Truck.java

public class Truck extends vehicle {
  
  public boolean trailer;
  public int loadMass;
  
  public Truck(boolean x, int y) {
    trailer = x; 
    loadMass = y;
  }
  
  public boolean getSunroof() {
    return sunroof; 
  }
  public void setSunroof(boolean x) {
    sunroof = x; 
  }
}

Vehicle.java

public class Vehicle {
  
  public int wheels, seats, people; 
  public String color, model; 
  
  public static void main(String[] args) {
    Car car = new Vehicle(); 
    Truck truck = new Vehicle();
    
    
  }
  
}