关于最基础的工厂的模式,究竟这种设计模式有什么优势呢?
下面是一个最基础的工厂模式,可是它究竟有什么优势呢?我觉得通过接口 —— 实现类 —— 获得另一个类的对象。这个过程反而我觉得麻烦很多。所以特地向大家请教。
import static MyTools.Print.*;interface Service { void method1(); void method2();}interface ServiceFactory { Service getService();}class Implementation1 implements Service { Implementation1() {} public void method1() {print("Implementation1 method1");} public void method2() {print("Implementation1 method2");}} class Implementation1Factory implements ServiceFactory { public Service getService() { return new Implementation1(); }}class Implementation2 implements Service { Implementation2() {} public void method1() {print("Implementation2 method1");} public void method2() {print("Implementation2 method2");}}class Implementation2Factory implements ServiceFactory { public Service getService() { return new Implementation2(); }} public class Factories { public static void serviceConsumer(ServiceFactory fact) { Service s = fact.getService(); s.method1(); s.method2(); } public static void main(String[] args) { serviceConsumer(new Implementation1Factory()); serviceConsumer(new Implementation2Factory()); }}