<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[qq_65743849的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/qq_65743849</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; qq_65743849]]></copyright><item><title><![CDATA[面向对象的理解]]></title><link>https://blog.youkuaiyun.com/qq_65743849/article/details/132656562</link><guid>https://blog.youkuaiyun.com/qq_65743849/article/details/132656562</guid><author>qq_65743849</author><pubDate>Sun, 03 Sep 2023 22:11:34 +0800</pubDate><description><![CDATA[/格式[访问修饰符] class 类名{//修饰符有public、private、protected成员变量声明；//字段成员方法声明；//行为//}//定义类就是定义了一个新的数据类型，这个数据类型的名称就是类名2、类的字段//格式[访问修饰符] 数据类型 字段名;(//修饰符可写可不写)//定义字段//姓名字段int age;//年龄字段//性别字段3、方法字段//定义字段//姓名字段int age;//年龄字段//性别字段//定义方法。]]></description><category></category></item><item><title><![CDATA[JAVA3流程控制语句]]></title><link>https://blog.youkuaiyun.com/qq_65743849/article/details/132267471</link><guid>https://blog.youkuaiyun.com/qq_65743849/article/details/132267471</guid><author>qq_65743849</author><pubDate>Sun, 13 Aug 2023 23:58:22 +0800</pubDate><description><![CDATA[2023.8.4。]]></description><category></category></item><item><title><![CDATA[三种排序方法]]></title><link>https://blog.youkuaiyun.com/qq_65743849/article/details/132238903</link><guid>https://blog.youkuaiyun.com/qq_65743849/article/details/132238903</guid><author>qq_65743849</author><pubDate>Fri, 11 Aug 2023 19:36:30 +0800</pubDate><description><![CDATA[找到一个最值放到相应的位置，然后让其余的值与这个最值进行比较//一维数组的选择排序（升序）/*i++){int min =i;//假设i为最小值下标j++){//j始终为用来和最小值比较的数min =j;//交换位置*///一维数组的降序i++){int max =i;//交换位置//求各科成绩的总和//定义一个新数组存储计算得到的和//遍历数组i++){//定义和的变量int h =0;j++){]]></description><category></category></item><item><title><![CDATA[高级查询(未完待续)]]></title><link>https://blog.youkuaiyun.com/qq_65743849/article/details/132218513</link><guid>https://blog.youkuaiyun.com/qq_65743849/article/details/132218513</guid><author>qq_65743849</author><pubDate>Thu, 10 Aug 2023 21:01:26 +0800</pubDate><description><![CDATA[2023.7.28。]]></description><category></category></item><item><title><![CDATA[云服务器基本知识]]></title><link>https://blog.youkuaiyun.com/qq_65743849/article/details/132218412</link><guid>https://blog.youkuaiyun.com/qq_65743849/article/details/132218412</guid><author>qq_65743849</author><pubDate>Thu, 10 Aug 2023 20:56:03 +0800</pubDate><description><![CDATA[2023.7.25。]]></description><category></category></item><item><title><![CDATA[JAVA2]]></title><link>https://blog.youkuaiyun.com/qq_65743849/article/details/132111346</link><guid>https://blog.youkuaiyun.com/qq_65743849/article/details/132111346</guid><author>qq_65743849</author><pubDate>Fri, 04 Aug 2023 19:48:38 +0800</pubDate><description><![CDATA[System.out:标准的输出流（print—不换行,println—换行进行字符串拼接,printf—可以进行格式化输出）System.in:标准的输入流（从控制台输出）]]></description><category></category></item><item><title><![CDATA[一、安装JAVA]]></title><link>https://blog.youkuaiyun.com/qq_65743849/article/details/132053081</link><guid>https://blog.youkuaiyun.com/qq_65743849/article/details/132053081</guid><author>qq_65743849</author><pubDate>Tue, 01 Aug 2023 23:53:49 +0800</pubDate><description><![CDATA[常量：在程序运行中不可以改变的量变量：在程序运行中可以改变的量（1）格式：变量类型   变量名（2）在使用变量时必须对变量进行赋值注意：变量的数据类型一经声明就不能改变。]]></description><category></category></item><item><title><![CDATA[MYSQL约束]]></title><link>https://blog.youkuaiyun.com/qq_65743849/article/details/132001065</link><guid>https://blog.youkuaiyun.com/qq_65743849/article/details/132001065</guid><author>qq_65743849</author><pubDate>Sat, 29 Jul 2023 22:37:51 +0800</pubDate><description><![CDATA[2023.7.27。]]></description><category></category></item><item><title><![CDATA[二、多表查询]]></title><link>https://blog.youkuaiyun.com/qq_65743849/article/details/131905608</link><guid>https://blog.youkuaiyun.com/qq_65743849/article/details/131905608</guid><author>qq_65743849</author><pubDate>Mon, 24 Jul 2023 21:42:56 +0800</pubDate><description><![CDATA[2023.07.24。]]></description><category></category></item><item><title><![CDATA[一、windows安装MYSQL]]></title><link>https://blog.youkuaiyun.com/qq_65743849/article/details/131887024</link><guid>https://blog.youkuaiyun.com/qq_65743849/article/details/131887024</guid><author>qq_65743849</author><pubDate>Mon, 24 Jul 2023 00:44:08 +0800</pubDate><description><![CDATA[一、windows安装MYSQL1.使用cmd 命令在管理员方式打开命令提示窗口2.使用命令将目录调整到目录下3.依次执行脚本4.验证安装为什么一定要在`bin`文件夹下才能进入到 `mysql`目录呢？输入mysql命令实际上是要执行mysql.exe这个程序在bin文件夹中若想在其他地方使用mysql命令，则需要配置环境变量（修改环境变量path的值，添加二、数据库三、将mysql添加到环境变量1.将mysql的bin目录地址添加到系统环境变量–>PATH中（**容易混淆多记**]]></description><category></category></item></channel></rss>