标签:inter val 隔离 instance rgs rod src node 完整
抽象工厂模式包含如下角色:
电器工厂:实例说明
电器工厂:参考类图
电器工厂:参考代码
代码结构
Television接口
package abstractfactory; public interface Television { public void play(); }
HaierTelevision类
package abstractfactory; public class HaierTelevision implements Television { @Override public void play() { System.out.println("海尔电视机播放中···"); } }
TCLTelevision类
package abstractfactory; public class TCLTelevision implements Television { @Override public void play() { System.out.println("TCL电视机播放中···"); } }
AirConditioner接口
package abstractfactory; public interface AirConditioner { public void changeTemperature(); }
HaierAirConditioner类
package abstractfactory; public class HaierAirConditioner implements AirConditioner { @Override public void changeTemperature() { System.out.println("海尔空调温度改变中···"); } }
TCLAirConditioner类
package abstractfactory; public class TCLAirConditioner implements AirConditioner { @Override public void changeTemperature() { System.out.println("TCL空调温度改变中···"); } }
EFactory接口
package abstractfactory; public interface EFactory { public Television produceTelevision(); public AirConditioner produceAirConditioner(); }
HaierFactory类
package abstractfactory; public class HaierFactory implements EFactory { @Override public Television produceTelevision() { return new HaierTelevision(); } @Override public AirConditioner produceAirConditioner() { return new HaierAirConditioner(); } }
TCLFactory类
package abstractfactory; public class TCLFactory implements EFactory { @Override public Television produceTelevision() { return new TCLTelevision(); } @Override public AirConditioner produceAirConditioner() { return new TCLAirConditioner(); } }
AbstractFactoryconfig.xml
<?xml version="1.0" encoding="UTF-8"?> <config> <className>abstractfactory.HaierFactory</className> </config>
XMLUtil类
package abstractfactory; import org.w3c.dom.Document; import org.w3c.dom.Node; import org.w3c.dom.NodeList; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import java.io.File; public class XMLUtil { //该方法用于从XML配置文件中提取具体类类名,并返回一个实例对象 public static Object getBean(){ try { //创建文档对象 DocumentBuilderFactory dFactory = DocumentBuilderFactory.newInstance(); DocumentBuilder builder = dFactory.newDocumentBuilder(); Document doc; doc = builder.parse(new File("D:\\MyNewWorld\\Study_JAVA\\MyHome\\Write_java\\My_Maven\\src\\main\\resources\\AbstractFactoryconfig.xml")); //获取包含类名的文本节点 NodeList n1 = doc.getElementsByTagName("className"); Node classNode = n1.item(0).getFirstChild(); String cName = classNode.getNodeValue(); //通过类名生成实例对象并将其返回 Class c = Class.forName(cName); Object obj = c.newInstance(); return obj; } catch (Exception e) { e.printStackTrace(); return null; } } }
Client类
package abstractfactory; public class Client { public static void main(String[] args) { try{ EFactory factory; Television tv; AirConditioner ac; factory = (EFactory) XMLUtil.getBean(); tv = factory.produceTelevision(); tv.play(); ac = factory.produceAirConditioner(); ac.changeTemperature(); }catch (Exception e){ System.out.println(e.getMessage()); } } }
运行结果
抽象工厂模式优点:
抽象工厂模式缺点:
在以下情况下可以使用抽象工厂模式:
标签:inter val 隔离 instance rgs rod src node 完整
原文地址:https://www.cnblogs.com/zyx110/p/12690325.html