Java设计模式---工厂模式

工厂模式主要分为 ：工厂模式和抽象工厂模式

工厂模式

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package com.facory.model;public interface HairInterface {        public  void getHair();} /*这个是接口，发型分为，左中右*/

=====================================================package com.facory.model;import java.util.Map;public class TestFactoryModel {    /**     * @param args     */    public static void main(String[] args) {        // TODO Auto-generated method stub              TestFactoryModel TestFactoryModel=new TestFactoryModel();        HairInterface hair=TestFactoryModel.getHairStyleByClass("model");        hair.getHair();    }    public  HairInterface getHairStyleByClass(String key){        PropertiesReader property=new PropertiesReader();        Map map=property.getProperties();        HairInterface hair = null;        try {            hair = (HairInterface) Class.forName((String) map.get(key)).newInstance();        } catch (InstantiationException e) {            // TODO Auto-generated catch block            e.printStackTrace();        } catch (IllegalAccessException e) {            // TODO Auto-generated catch block            e.printStackTrace();        } catch (ClassNotFoundException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }        return hair ;    }}/*这个是工厂，用于产生各种发型*/

package com.facory.model;public class LeftHairStyle implements HairInterface {    @Override    public void getHair() {        // TODO Auto-generated method stub        System.out.println("-----------创建了一个左分的发型--------------");    }}

package com.facory.model;public class ModdleHairStyle implements HairInterface {    @Override    public void getHair() {        // TODO Auto-generated method stub        System.out.println("-----------创建了一个中分的发型--------------");    }}

package com.facory.model;public class RightHairStylr implements HairInterface {    @Override    public void getHair() {        // TODO Auto-generated method stub        System.out.println("-----------创建了一个右分的发型--------------");    }}

================================下面这个就不是很重要了，其实就是一个工具类，读取配置文件的package com.facory.model;import java.io.InputStream;import java.util.Enumeration;import java.util.HashMap;import java.util.Map;import java.util.Properties;/** * properties文件的读取工具 * @author Administrator * */public class PropertiesReader {    public Map<String, String> getProperties() {        Properties props = new Properties();        Map<String, String> map = new HashMap<String, String>();        try {            InputStream in = getClass().getResourceAsStream("type.properties");            props.load(in);            Enumeration en = props.propertyNames();            while (en.hasMoreElements()) {                String key = (String) en.nextElement();                String property = props.getProperty(key);                map.put(key, property);//              System.out.println(key + "  " + property);            }        } catch (Exception e) {            e.printStackTrace();        }        return map;    }}

配置文件left=com.facory.model.LeftHairStylemodel=com.facory.model.ModdleHairStyleright=com.facory.model.RightHairStylr

抽象工厂模式

这里面定义了一个工厂的接口，两个工厂实现类（圣诞节工厂，新年工厂）；又定义了男孩女孩接口，每个接口也是分别对象两个实现类，例如新年男孩、圣诞节男孩实现类。

package com.abstractfactory.model;public interface FactoryInterface {    //女孩接口    public GirlInterface GetGirl();    //男孩接口    public BoyInterface GetBoy();}/*抽象工厂接口*/

package com.abstractfactory.model;public class Cfactory implements FactoryInterface {    @Override    public GirlInterface GetGirl() {        // TODO Auto-generated method stub        return new CGirl() ;    }    @Override    public BoyInterface GetBoy() {        // TODO Auto-generated method stub        return new CBoy();    }}//圣诞节工厂----------package com.abstractfactory.model;public class Yfactory implements FactoryInterface {    @Override    public GirlInterface GetGirl() {        // TODO Auto-generated method stub        return new YGirl();    }    @Override    public BoyInterface GetBoy() {        // TODO Auto-generated method stub        return new YBoy();    }}//新年工厂

然后就是两个工厂的四个实现类package com.abstractfactory.model;public class CBoy implements BoyInterface {    @Override    public void drawBoy() {        // TODO Auto-generated method stub            System.out.println("------------圣诞节男孩----------------");    }}===========================package com.abstractfactory.model;public class CGirl implements GirlInterface {    @Override    public void drawGirl() {        // TODO Auto-generated method stub            System.out.println("------------圣诞节女孩---------------");    }}==============================package com.abstractfactory.model;public class YBoy implements BoyInterface {    @Override    public void drawBoy() {        // TODO Auto-generated method stub        System.out.println("------------新年男孩----------------");    }}========================package com.abstractfactory.model;public class YGirl implements GirlInterface {    @Override    public void drawGirl() {        // TODO Auto-generated method stub        System.out.println("------------新年女孩---------------");    }}

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区别:与工厂模型不同的是，这里的工厂继承了接口，并且还可以有多重类的，例如新年工厂，圣诞节工厂；每个工厂里面分男女，工厂模式里面只有一个工厂，只能造左，中，右.