Simple Factory Pattern

简单工厂模式

From simple plant role（创造者）,抽象产品（所有具体产品的父类,可以是接口或者抽象类）,具体产品（Succession or implement specific products）三个组成

具体实现

public class Test {
    
    // 相当于客户端
    public static void main(String[] args) {
    
        // 首先创建工厂,Through the factory to create the corresponding class again
        Factory factory = new Factory();
        factory.getCar("wulin").name();
        factory.getCar("dazong").name();
    }

    // 抽象产品
    interface Car {
    
        void name();
    }
    // 具体产品
    static class Dazong implements Car {
    
        @Override
        public void name() {
    
            System.out.println("this is dazong");
        }
    }
    // 具体产品
    static class Wulin implements Car {
    
        @Override
        public void name() {
    
            System.out.println("this is wulin");
        }
    }

    // 简单工厂
    static class Factory {
    
        // By calling the factory get entity method to create specific products,Return to the abstract specific products
        public Car getCar(String car){
    
            switch (car){
    
                case "wulin":
                    return new Wulin();
                case "dazong":
                    return new Dazong();
            }
            return null;
        }
    }
}