java - 将枚举视为类中的常规属性(property)

我有一个包含多个属性的类，其中一个是enum：

public class Car {

    private String manufacturer;
    private int power;

    public enum Color {
        RED("red"),
        BLUE("blue"),
        GREEN("green");

        private final String value;

        Color(final String value) {
            this.value = value;
        }

        public String getValue() {
            return value;
        }
    }

    public String getManufacturer() {
        return manufacturer;
    }

    public void setManufacturer(String manufacturer) {
        this.manufacturer = manufacturer;
    }

    public int getPower() {
        return power;
    }

    public void setPower(int power) {
        this.power = power;
    }

    public Car(String manufacturer, int power, Color color) {
        this.manufacturer = manufacturer;
        this.power = power;
//        Color(color); // Calling constructor, but --> ERROR: cannot find symbol
    }

    @Override
    public String toString() {
        return "Car{" + "manufacturer=" + manufacturer + ", power=" + power + '}'; // TODO add color
    }

}

我将该类放入列表中，并填充一些值：

List<Car>  car = Arrays.asList(
          new Car("Mazda", 95, Car.Color.BLUE),
          new Car("Toyota", 110, Car.Color.RED),
          new Car("Honda", 85, Car.Color.GREEN)
  );

我想要的是像常规DTO一样使用该类，并使用其getter和setter：

System.out.println(car.get(0));

但是，以我为例，我只会得到：

Car{manufacturer=Mazda, power=95}

因此，缺少color属性。

如何将enum类型用作类的常规属性？

最佳答案

您可以像使用Java中的其他任何类型一样使用枚举类型。试一试：

private String manufacturer;
private int power;
private Color color;  // here is the property of enum type

....

public Car(String manufacturer, int power, Color color) {
    this.manufacturer = manufacturer;
    this.power = power;
    this.color = color;
}

Car newCar = new Car("manufacturer", 150, Color.RED);