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三、设计模式之抽象工厂模式(创建型)
阅读量:229 次
发布时间:2019-02-28

本文共 2184 字,大约阅读时间需要 7 分钟。

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  • ???????????

  • ?????Creator??????????????????????????????????????????????????

  • ?????Concrete Creator????????????????????????????????????NorthFactory ? SouthFactory ???????????????????????

  • ?????Product????????????????????????????????Fruit ????????????????

  • ?????Concrete Product????????????????? Apple ? Banana ????????? Fruit ????????

  • ?????????????

    ???????????????????????????????????????????????????????????????????

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    public interface FruitFactory {    // ????    public abstract Fruit createApple();    // ????    public abstract Fruit createBanana();}

    ??????

    public class NorthFactory implements FruitFactory {    @Override    public Fruit createApple() {        return new NorthApple();    }        @Override    public Fruit createBanana() {        return new NorthBanana();    }}

    ??????

    public abstract class Fruit {    public abstract void collect();}public class NorthApple extends Fruit {    @Override    public void collect() {        System.out.println("??????");    }}public class NorthBanana extends Fruit {    @Override    public void collect() {        System.out.println("??????");    }}

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    ???????????????????????????????????TropicalFactory????????createApple?createBanana???????????????????????????????????-?????

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