還是那個女媧造人的故事，先把人類的模型創建出來 創造個接口，叫IHuman；
public abstract void getColor(); public abstract void talk();}然后創建三個類，分別是BlackHuman,WhiteHuman,YellowHuman ,這三個類都繼承了IHuman這個接口；
BlackHuman: public class BlackHuman implements IHuman {
@Overridepublic void getColor() { System.out.} WhiteHuman: public class WhiteHuman implements IHuman {@Overridepublic void getColor() { System.out.println("白種人");}@Overridepublic void talk() { System.out.println("白種人說話了");}}YellowHuman: public class YellowHuman implements IHuman { @Override public void getColor() { System.out.println("黃種人"); } @Override public void talk() { System.out.println("黃種人說話了"); } } 然后再創建一個接口，取名IHumanFactory,這就像是一個煉丹爐的模型 public interface IHumanFactory { public abstract IHuman createHuman(String human); } 然后再創建一個類，取名HumanFactory,繼承了IHumanFactory這個接口： public class HumanFactory implements IHumanFactory { public static final String BlackHuman = "blackHuman"; public static final String WhiteHuman = "whiteHuman"; public static final String YellowHuman = "yellowHuman"; public static HumanFactory humanFactory = null; private HumanFactory(){ } /* /*這里設置了一個單列模式 /* public static HumanFactory getIntance(){ if(humanFactory == null){ humanFactory = new HumanFactory(); } return humanFactory; } /* /*重寫了IHumanFactory接口，判斷兩邊是否相等，并將數值返回； /* @Override public IHuman createHuman(String human) { if(human.equals(HumanFactory.BlackHuman)){ return new BlackHuman(); }else if(human.equals(HumanFactory.WhiteHuman)){ return new WhiteHuman(); }else if(human.equals(HumanFactory.YellowHuman)){ return new YellowHuman(); } return null; } } 創建一個類，這個就是程序入口，如果想創造哪個人類，可以直接在這里添加：
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