<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[DialogD的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/DialogD</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; DialogD]]></copyright><item><title><![CDATA[SQL条件IF函数(MySql)]]></title><link>https://blog.youkuaiyun.com/DialogD/article/details/99640637</link><guid>https://blog.youkuaiyun.com/DialogD/article/details/99640637</guid><author>DialogD</author><pubDate>Thu, 15 Aug 2019 19:04:34 +0800</pubDate><description><![CDATA[MySql条件
判断IF函数
IF(expr, value1, value2) 
IFNULL(value1,value2)

...]]></description><category></category></item><item><title><![CDATA[SQL条件CASE函数(MySql)]]></title><link>https://blog.youkuaiyun.com/DialogD/article/details/98981121</link><guid>https://blog.youkuaiyun.com/DialogD/article/details/98981121</guid><author>DialogD</author><pubDate>Fri, 09 Aug 2019 19:43:00 +0800</pubDate><description><![CDATA[sql 条件判断函数case]]></description><category></category></item><item><title><![CDATA[判断字符串中的字母大小写、数字]]></title><link>https://blog.youkuaiyun.com/DialogD/article/details/97666075</link><guid>https://blog.youkuaiyun.com/DialogD/article/details/97666075</guid><author>DialogD</author><pubDate>Mon, 29 Jul 2019 18:44:11 +0800</pubDate><description><![CDATA[判断字符串中的字母大小写、数字的个数
字符串转字符数组
字符串]]></description><category></category></item><item><title><![CDATA[java实现多态的两种方式（接口、抽象类）]]></title><link>https://blog.youkuaiyun.com/DialogD/article/details/97499500</link><guid>https://blog.youkuaiyun.com/DialogD/article/details/97499500</guid><author>DialogD</author><pubDate>Sat, 27 Jul 2019 13:53:05 +0800</pubDate><description><![CDATA[抽象类实现多态：
父类对象指向子类对象，可调用子类的重写方法。
接口实现多态：
接口对象指向实现类对象，可调用实现类的重写方法
以下就是生活中两种多态的实例，**抽象类是模板，接口是功能。
**描述：

Door.java  抽象类
package com.dialogd.polymorphic;
//抽象类，抽象类是一种模板
public abstract class Door {
	//开门的...]]></description><category></category></item><item><title><![CDATA[学生宿舍系统2]]></title><link>https://blog.youkuaiyun.com/DialogD/article/details/77758480</link><guid>https://blog.youkuaiyun.com/DialogD/article/details/77758480</guid><author>DialogD</author><pubDate>Thu, 31 Aug 2017 23:22:47 +0800</pubDate><description><![CDATA[学生宿舍的管理系统]]></description><category></category></item><item><title><![CDATA[宿舍管理查询系统]]></title><link>https://blog.youkuaiyun.com/DialogD/article/details/77758238</link><guid>https://blog.youkuaiyun.com/DialogD/article/details/77758238</guid><author>DialogD</author><pubDate>Thu, 31 Aug 2017 23:06:56 +0800</pubDate><description><![CDATA[IO流，各模块调用关系，层次结构]]></description><category></category></item></channel></rss>