java的23中设计模式--工厂方法模式（Factory Method）1.普通工厂模式
工厂类
/** * @Title Factory.java * @Package factory.factory1 * @date 2015-1-22 上午10:16:02 * @version V1.0 */package factory.factory1;/** * @ClassName Factory * @date 2015-1-22 上午10:16:02 */public class Factory { public Sender PRocedure(String type) { if("mail".endsWith(type)) { return new MailSender(); } if("sms".endsWith(type)) { return new SMSSender(); }else { System.out.println("未输入正确的类型"); //更好的话加入异常 return null; } }}
发送器接口
/** * @Title Sender.java * @Package factory.factory1 * @date 2015-1-22 上午10:07:24 * @version V1.0 */package factory.factory1;/** * @ClassName Sender * @date 2015-1-22 上午10:07:24 */public interface Sender {public void send();}
发送器实现类
/** * @Title MailSender.java * @Package factory.factory1 * @date 2015-1-22 上午10:09:29 * @version V1.0 */package factory.factory1;/** * @ClassName MailSender * @date 2015-1-22 上午10:09:29 */public class MailSender implements Sender{ /* (non-Javadoc) * @see factory.factory1.Sender#send() */ @Override public void send() { System.out.println("this is a mailsender"); }}
/** * @Title SMSSender.java * @Package factory.factory1 * @date 2015-1-22 上午10:14:36 * @version V1.0 */package factory.factory1;/** * @ClassName SMSSender * @date 2015-1-22 上午10:14:36 */public class SMSSender implements Sender{ /* (non-Javadoc) * @see factory.factory1.Sender#send() */ @Override public void send() { System.out.println("this is a smssender"); }}
测试类：
/** * @Title Test.java * @Package factory.factory1 * @date 2015-1-22 上午10:20:19 * @version V1.0 */package factory.factory1;/** * @ClassName Test * @date 2015-1-22 上午10:20:19 */public class Test {public static void main(String[] args) { Factory factory = new Factory(); Sender sender = factory.procedure("mail"); sender.send();}}
这种方法的实现方式对传入的类型要求比较高，就是传入的参数如果错误就不能够获得相对应的产生的东西。
2.多个工厂的方法
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