java 设计模式——抽象工厂（通过工厂类生成具体的对象）-java design patterns- abstract factory (factory class to generate a specific object)

java 设计模式--工厂设计模式（通过抽象工厂生成具体的工厂类，然后用具体的工厂类生成实际产品）代码demo0010-java design patterns- factory design pattern code (abstract factory to generate concrete factory class, and then with a concrete factory class to generate the actual products) demo0010

java 设计模式--工厂设计模式（通过抽象工厂生成具体的工厂类，然后用具体的工厂类生成实际产品）代码demo03-java design patterns- factory design pattern code (abstract factory to generate concrete factory class, and then with a concrete factory class to generate the actual products) demo0300

java 设计模式--工厂设计模式（通过抽象工厂生成具体的工厂类，然后用具体的工厂类生成实际产品）代码demo02-java design patterns- factory design pattern code (abstract factory to generate concrete factory class, and then with a concrete factory class to generate the actual products) demo0200