使用java按照工厂设计模式写出案例并画出类图

以下是一个简单的工厂设计模式案例，该案例是一个汽车工厂，可以从工厂中生产不同类型的汽车：

Car.java:

public abstract class Car {
    private String name;

    public Car(String name) {
        this.name = name;
    }

    public String getName() {
        return name;
    }

    public abstract void assemble();
}

Ford.java:

public class Ford extends Car {
    public Ford(String name) {
        super(name);
    }

    public void assemble() {
        System.out.println("Assembling " + getName() + " by Ford");
    }
}

Chevrolet.java:

public class Chevrolet extends Car {
    public Chevrolet(String name) {
        super(name);
    }

    public void assemble() {
        System.out.println("Assembling " + getName() + " by Chevrolet");
    }
}

CarFactory.java:

public class CarFactory {
    public Car createCar(String type, String name) {
        Car car = null;

        if (type.equals("Ford")) {
            car = new Ford(name);
        } else if (type.equals("Chevrolet")) {
            car = new Chevrolet(name);
        }

        return car;
    }
}

使用例子：

public class Main {
    public static void main(String[] args) {
        CarFactory carFactory = new CarFactory();

        Car ford = carFactory.createCar("Ford", "Mustang");
        Car chevrolet = carFactory.createCar("Chevrolet", "Camaro");

        ford.assemble();
        chevrolet.assemble();
    }
}

类图如下：