java工厂方法模式

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public class Applicaiton {      public static void main(String[] args) {      PenCore penCore;      Creator ballpen =new BlueBallpen();      penCore=ballpen.getpPenCore();      penCore.writeWord("你好很高兴认识你");      ballpen=new RedBallPen();      penCore=ballpen.getpPenCore();      penCore.writeWord("HOW ARE YOU");      }}