java创建型设计模式——抽象工厂模式

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模式理解：该模式跟工厂模式的区别就是，工厂模式对应着一个工厂，而抽象工厂模式对应多个工厂，就是说将多个工厂抽象出一个类，先通过这个类来创建对应工厂，然后再通过工厂实现工厂中相应的方法
运用场景：两个串联开关的时候使用，无所谓多个工厂类型是否相同
代码示例：
//先设计两个接口：    public interface IStore {        void sale();    }    public interface ICompany {        void work();    }//再创建对应接口的实现类：    public class DianQiStore implements IStore {        @Override        public void sale() {            System.out.println("销售电器");        }    }    public class FuZhuangStore implements IStore {        @Override        public void sale() {            System.out.println("销售服装");        }    }    public class GeLiCompany implements ICompany{        @Override        public void work() {            System.out.println("制造格力空调");        }    }    public class XiaNaiErCompany implements ICompany {        @Override        public void work() {            System.out.println("进行服装设计");        }    }//抽象出工厂：public abstract class AbstractFactory {    abstract IStore getStore(String type);    abstract ICompany getCompany(String type);}//创建商场工厂和公司工厂，并继承抽象工厂：    public class StoreFactory extends AbstractFactory{        @Override        IStore getStore(String type) {            if (type.equalsIgnoreCase("FZ")) {                return new FuZhuangStore();            }            if (type.equalsIgnoreCase("DQ")) {                return new DianQiStore();            }            return null;        }        @Override        ICompany getCompany(String type) {            return null;        }    }    public class CompanyFactory extends AbstractFactory{        @Override        IStore getStore(String type) {            return null;        }        @Override        ICompany getCompany(String type) {            if (type.equalsIgnoreCase("GL")) {                return new GeLiCompany();            }            if (type.equalsIgnoreCase("XNE")) {                return new XiaNaiErCompany();            }            return null;        }    }//再设计一个类用于选择工厂类型：public class SelectFactory {    public AbstractFactory getFactory(String type){        if (type.equalsIgnoreCase("STORE")) {            return new StoreFactory();        }        if (type.equalsIgnoreCase("COMPANY")) {            return new CompanyFactory();        }        return null;    }}//最后写个测试类：public class Main {    public static void main(String[] args) {        SelectFactory selectFactory=new SelectFactory();        selectFactory.getFactory("store").getStore("fz").sale();        selectFactory.getFactory("store").getStore("dq").sale();        selectFactory.getFactory("company").getCompany("xne").work();        selectFactory.getFactory("company").getCompany("gl").work();    }}//先设计两个接口：    public interface IStore {        void sale();    }    public interface ICompany {        void work();    }//再创建对应接口的实现类：    public class DianQiStore implements IStore {        @Override        public void sale() {            System.out.println("销售电器");        }    }    public class FuZhuangStore implements IStore {        @Override        public void sale() {            System.out.println("销售服装");        }    }    public class GeLiCompany implements ICompany{        @Override        public void work() {            System.out.println("制造格力空调");        }    }    public class XiaNaiErCompany implements ICompany {        @Override        public void work() {            System.out.println("进行服装设计");        }    }//抽象出工厂：public abstract class AbstractFactory {    abstract IStore getStore(String type);    abstract ICompany getCompany(String type);}//创建商场工厂和公司工厂，并继承抽象工厂：    public class StoreFactory extends AbstractFactory{        @Override        IStore getStore(String type) {            if (type.equalsIgnoreCase("FZ")) {                return new FuZhuangStore();            }            if (type.equalsIgnoreCase("DQ")) {                return new DianQiStore();            }            return null;        }        @Override        ICompany getCompany(String type) {            return null;        }    }    public class CompanyFactory extends AbstractFactory{        @Override        IStore getStore(String type) {            return null;        }        @Override        ICompany getCompany(String type) {            if (type.equalsIgnoreCase("GL")) {                return new GeLiCompany();            }            if (type.equalsIgnoreCase("XNE")) {                return new XiaNaiErCompany();            }            return null;        }    }//再设计一个类用于选择工厂类型：public class SelectFactory {    public AbstractFactory getFactory(String type){        if (type.equalsIgnoreCase("STORE")) {            return new StoreFactory();        }        if (type.equalsIgnoreCase("COMPANY")) {            return new CompanyFactory();        }        return null;    }}//最后写个测试类：public class Main {    public static void main(String[] args) {        SelectFactory selectFactory=new SelectFactory();        selectFactory.getFactory("store").getStore("fz").sale();        selectFactory.getFactory("store").getStore("dq").sale();        selectFactory.getFactory("company").getCompany("xne").work();        selectFactory.getFactory("company").getCompany("gl").work();    }}
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