日期:2014-05-20 浏览次数:20718 次
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()); } }