1.实例化对象不需要new，用工厂模式

2.工厂模式分为（简单工厂模式，工厂方法模式，抽象工厂模式）

package com.wuming.factory.simple;public interface Car {public void name();
}

package com.wuming.factory.simple;
//简单工厂模式（也可称静态工厂模式，弊端：增加一个产品大众，不修改原来代码，做不到）
//不满足开闭原则
public class CarFactory {public static Car getCar(String car){if (car.equals("五菱")){return new WuLing();}else if(car.equals("特斯拉")){return new Tesla();}else{return null;}}
}

package com.wuming.factory.simple;public class Consumer {public static void main(String[] args) {//1.new/*     Car car = new WuLing();Car car2 = new Tesla();*///2.使用工厂创建Car car = CarFactory.getCar("五菱");Car car2 = CarFactory.getCar("特斯拉");car.name();//五菱car2.name();//特斯拉}
}

package com.wuming.factory.simple;public class Dazhong implements Car{@Overridepublic void name() {System.out.println("大众");}
}

package com.wuming.factory.simple;public class Tesla implements Car{@Overridepublic void name() {System.out.println("特斯拉");}
}

package com.wuming.factory.simple;public class WuLing implements Car{@Overridepublic void name() {System.out.println("五菱");}
}