Java 家长车。子类：电力或化石。孩子：私家车还是出租车

我最近学了OOP，这让我很困惑。 我想制造一辆超级级汽车和电动或化石汽车作为它的子类

`abstract class Electric extends Car`. 

问题是，我只想举私人或出租车的例子。我该如何组织这一点，以便理想情况下我可以作为

Taxi cab1 = new Fossil()

我意识到这是一个答案显而易见的问题，但在看了泛型和接口之后，直到我的眼睛发痛，挫折感一直在增长

如果有人能提醒我如何做到这一点，我将不胜感激，因为我确信我已经知道，而且已经忘记了。

汽车类：

电动汽车类别：

化石汽车：

---

希望这有帮助

你是这样想的吗

汽车类别：

发动机等级：

IC发动机等级：

电动发动机类别：

出租车等级：

私家车等级：

使用应用程序类：

---

在绘制类层次结构之前，还要阐明您希望这些对象做什么，因为这将确定作为接口或抽象类有什么意义，以及它们之间的关系应该是什么。例如，出租车和私家车有不同的方法吗？很好。Private和Taxi将有一些不共享的方法，电动出租车将需要从electric继承所有方法，然后是Car。出租车也可以是化石，在这种情况下，它需要继承所有化石方法，而不是电气方法。电动和化石的常用方法将在Car中找到。您可能希望将发动机类型划分为一个单独的类，并使用它来组合自定义类型，例如

Taxi cab1=new Taxi（new ElectricMotor（））。事实上，“组件”模式将非常有意义。请注意：您永远无法执行“Taxi cab1=new Fossil（）”，因为这需要您可以将Fossil投射到Taxi中。但不是每辆化石车都是出租车！谢谢你的努力。这虽然不是问题本身。我遇到的问题是试图把一辆出租车打成一个延伸汽车的化石。
public class Car{

private int yearOfManufacture;
private String brand;
private String model;

private boolean forRent;


public Car(String pBrand, String pModel, int pYearOfManufacture, boolean pForRent){
    this.yearOfManufacture = pYearOfManufacture;
    this.brand = pBrand;
    this.model = pModel;
    this.forRent = pForRent;
}


public boolean isPrivate(){
    return (!forRent);
}

public int getYear()                
    {
        return this.yearOfManufacture;
    }

public String getBrand()
    {
        return this.brand;
    }

public void setYear(int year)
    {
        this.yearOfManufacture = year;
    }

public void setBrand(String carBrand)
    {
        this.brand = carBrand;
    }

public void setModel(String model)                        
    {
        this.model = model;   

public String getModel()
    {
        return this.model;
    }

}

public class ElectricCar extends Car{

    private int electricPowerOutput;

    public ElectricCar(String pBrand, String pModel, int pYearOfManufacture, int pElectricPowerOutput, boolean pForRent){
        super(pBrand,pModel,pYearOfManufacture,pForRent);
        this.electricPowerOutput = pElectricPowerOutput;
    }

    public int getElectricPowerOutput(){
        return this.electricPowerOutput;
    }

    public void setElectricPowerOutput(int electricPower){
        this.electricPowerOutput = electricPower;
    }

}

public class FossilCar extends Car{

    private int emissionRating;

    public ElectricCar(String pBrand, String pModel, int pYearOfManufacture, int pEmissionRating, boolean pForRent){
        super(pBrand,pModel,pYearOfManufacture,pForRent);
        this.emissionRating = pEmissionRating;
    }

    public int getEmissionRating(){
        return this.emissionRating;
    }

    public void setElectricPowerOutput(int emissionRating){
        this.emissionRating = emissionRating;
    }

}

public class Car{

private int yearOfManufacture;
private String brand;
private String model;
private Engine engine;  

public Car(String pBrand, String pModel, int pYearOfManufacture, Engine pEngine){
    this.yearOfManufacture = pYearOfManufacture;
    this.brand = pBrand;
    this.model = pModel;
    this.engine = pEngine;
}

}

public class Engine {

 private int power;
 private int emission;

 public Engine(int power, int emission) {
  this.power = power;
  this.emission = emission;
 }
}

public class ICEngine extends Engine {

 private int numOfValves;

 public ICEngine(int power, int emission, int numOfValves) {
  super(int power, int emission);
  this.numOfValves = numOfValves;
 }
}

public class ElectricEngine extends Engine {

 private int wattage;

 public ICEngine(int power, int emission, int wattage) {
  super(int power, int emission);
  this.wattage = wattage;
 }
}

public class Taxi extends Car{

    private String driverName;

    public Taxi(String driverName, String pBrand, String pModel, int pYearOfManufacture, Engine engine){
        super(pBrand, pModel, pYearOfManufacture, engine);
        this.driverName = driverName;
    }
}

public class PrivateCar extends Car {

 private String ownerName;

 public PrivateCar(String ownerName, String pBrand, String pModel, int pYearOfManufacture, Engine engine) {
  super(pBrand, pModel, pYearOfManufacture, engine);
  this.ownerName = ownerName;
 }


}

public class MyApp {

 public static void main(String[] args) {

  Engine eEngine1 = new ElectricEngine(100, 10, 10000);
  Car myElectricTaxi = new Taxi("Driver1", "Honda", "Accord", 2013, eEngine1);

  Engine icEngine1 = new ICEngine(100, 10, 6);
  Car myICTaxi = new Taxi("Driver2", "Honda", "Accord", 2013, icEngine1);

  Engine eEngine2 = new ElectricEngine(100, 10, 10000);
  Car myElectricPrivateCar = new PrivateCar("Owner1", "Honda", "Accord", 2013, eEngine2);

  Engine icEngine2 = new ICEngine(100, 10, 4);
  Car myICPrivateCar = new PrivateCar("Owner2", "Honda", "Accord", 2013, icEngine2);

 }

}