设计模式——工厂方法
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package factoryMethod;public class LeiFeng {public void sweep(){System.out.println("sweeping");}public void wash(){System.out.println("washing");}}package factoryMethod;public class Undergraduate extends LeiFeng{}package factoryMethod;public class Volunteer extends LeiFeng{}package factoryMethod;public interface LeiFengFactory {public LeiFeng creaLeiFeng();}package factoryMethod;public class UnderGraduateFactory implements LeiFengFactory{@Overridepublic LeiFeng creaLeiFeng() {return new Undergraduate();}}package factoryMethod;public class VolunteerFactory implements LeiFengFactory{@Overridepublic LeiFeng creaLeiFeng() {return new Volunteer();}}
