<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[wangyanming123的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/wangyanming123</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; wangyanming123]]></copyright><item><title><![CDATA[java.nio.Files使用]]></title><link>https://blog.youkuaiyun.com/wangyanming123/article/details/124262540</link><guid>https://blog.youkuaiyun.com/wangyanming123/article/details/124262540</guid><author>wangyanming123</author><pubDate>Mon, 18 Apr 2022 23:29:56 +0800</pubDate><description><![CDATA[java nio Files类使用]]></description><category></category></item><item><title><![CDATA[LeetCode刷题计划]]></title><link>https://blog.youkuaiyun.com/wangyanming123/article/details/117968260</link><guid>https://blog.youkuaiyun.com/wangyanming123/article/details/117968260</guid><author>wangyanming123</author><pubDate>Wed, 16 Jun 2021 22:04:32 +0800</pubDate><description><![CDATA[数组
字符串
深度优先搜索
广度优先搜索
栈
哈希表
递归
滑动窗口
链表
堆
队列
动态规划
贪心算法
并查集
分治算法
数学
二分查找
排序
图
字典树
极小化极大
回溯算法

]]></description><category></category></item><item><title><![CDATA[Apache POI学习总结]]></title><link>https://blog.youkuaiyun.com/wangyanming123/article/details/90349670</link><guid>https://blog.youkuaiyun.com/wangyanming123/article/details/90349670</guid><author>wangyanming123</author><pubDate>Sun, 19 May 2019 23:10:15 +0800</pubDate><description><![CDATA[Apache POI学习总结

简介

Java语言对Microsoft Office（Excel、WORD、PowerPoint、Visio等）格式读和写操作。
2.官方文档
2.1.官方主页
http://poi.apache.org/
2.2.JavaDoc链接
http://poi.apache.org/apidocs/4.1/
2.3.各组件的作用


...]]></description><category></category></item><item><title><![CDATA[采用clone()方法创建对象而不是new对象]]></title><link>https://blog.youkuaiyun.com/wangyanming123/article/details/88322460</link><guid>https://blog.youkuaiyun.com/wangyanming123/article/details/88322460</guid><author>wangyanming123</author><pubDate>Thu, 07 Mar 2019 22:10:45 +0800</pubDate><description><![CDATA[clone()方法拷贝对象返回的是一个新对象，而不是对象的引用地址，每次拷贝动作不是一个全新对象的创建；
new关键字创建对象时所用构造方法都会自动调用。而clone不会调用任何构造方法；
``


...]]></description><category></category></item><item><title><![CDATA[Java性能概述]]></title><link>https://blog.youkuaiyun.com/wangyanming123/article/details/88322128</link><guid>https://blog.youkuaiyun.com/wangyanming123/article/details/88322128</guid><author>wangyanming123</author><pubDate>Thu, 07 Mar 2019 21:56:21 +0800</pubDate><description><![CDATA[导致系统瓶颈的计算资源
cpu、内存、IO、网络、数据库、锁竞争、异常。



程序性能衡量指标
响应时间；启动时间、执行时间、执行速度、计算资源分配、内存分配、磁盘吞吐量、网络吞吐量、负载承受能力；



性能优化目标
编写更有效率的代码、使用更高效的算法、减少锁竞争。



性能优化策略
用空间换时间、用时间换空间、简化代码、并行处理。




...]]></description><category></category></item><item><title><![CDATA[中文字符串判断]]></title><link>https://blog.youkuaiyun.com/wangyanming123/article/details/81105986</link><guid>https://blog.youkuaiyun.com/wangyanming123/article/details/81105986</guid><author>wangyanming123</author><pubDate>Wed, 18 Jul 2018 21:49:24 +0800</pubDate><description><![CDATA[
public class EnZhDistinguish {

    public static void main(String[] args) {
        String s = &quot;aa中囯bb&quot;;
        System.out.println(s.length() == s.getBytes().length);
    }

}
]]></description><category></category></item><item><title><![CDATA[字符串与ASCII的转换]]></title><link>https://blog.youkuaiyun.com/wangyanming123/article/details/81105840</link><guid>https://blog.youkuaiyun.com/wangyanming123/article/details/81105840</guid><author>wangyanming123</author><pubDate>Wed, 18 Jul 2018 21:39:48 +0800</pubDate><description><![CDATA[
public class ASCIIUtil {

    public static void main(String[] args) {
        System.out.println(stringToAscii(&quot;hello嗨喽&quot;));
        System.out.println(asciiToString(&quot;104,101,108,108,111,21992,21949&quot;...]]></description><category></category></item><item><title><![CDATA[Apache commons-io简介]]></title><link>https://blog.youkuaiyun.com/wangyanming123/article/details/80217747</link><guid>https://blog.youkuaiyun.com/wangyanming123/article/details/80217747</guid><author>wangyanming123</author><pubDate>Sun, 06 May 2018 20:06:45 +0800</pubDate><description><![CDATA[Apache commons-io简介

]]></description><category></category></item><item><title><![CDATA[Apache commons lang简介]]></title><link>https://blog.youkuaiyun.com/wangyanming123/article/details/80213461</link><guid>https://blog.youkuaiyun.com/wangyanming123/article/details/80213461</guid><author>wangyanming123</author><pubDate>Sun, 06 May 2018 12:47:21 +0800</pubDate><description><![CDATA[Apache commons lang简介

]]></description><category></category></item><item><title><![CDATA[Apache commons 类库简介]]></title><link>https://blog.youkuaiyun.com/wangyanming123/article/details/80213411</link><guid>https://blog.youkuaiyun.com/wangyanming123/article/details/80213411</guid><author>wangyanming123</author><pubDate>Sun, 06 May 2018 12:39:20 +0800</pubDate><description><![CDATA[Apache commons 类库简介

]]></description><category></category></item><item><title><![CDATA[java8新特性]]></title><link>https://blog.youkuaiyun.com/wangyanming123/article/details/79782358</link><guid>https://blog.youkuaiyun.com/wangyanming123/article/details/79782358</guid><author>wangyanming123</author><pubDate>Sun, 01 Apr 2018 21:58:47 +0800</pubDate><description><![CDATA[Java8新特性（十大） 
Java8新特性包含语言、编译器、库、工具和JVM等方面的十多个新特性。 
1.新特性 
1.1.Java语言的新特性 
1.1.1.Lambda表达式和函数式接口 
1.1.2.接口的默认方法和静态方法 
1.1.3.方法引用 
1.1.4.重复注解 
1.2.Java编译器的新特性 
1.2.1.参数名称 
1.3.Java官方库的新特性 
1.3.1.Option...]]></description><category></category></item><item><title><![CDATA[使用Collections.emptyList()方法返回可能为空的集合]]></title><link>https://blog.youkuaiyun.com/wangyanming123/article/details/78941180</link><guid>https://blog.youkuaiyun.com/wangyanming123/article/details/78941180</guid><author>wangyanming123</author><pubDate>Sun, 31 Dec 2017 11:47:33 +0800</pubDate><description><![CDATA[如果某个函数中的返回结果为集合，且结果可能为空时，使用该方法需要判断返回结果为null和empty;如果使用Collections.emptyList()返回为空的结果，使用时不用判断；]]></description><category></category></item><item><title><![CDATA[使用工厂方法替换switch语句]]></title><link>https://blog.youkuaiyun.com/wangyanming123/article/details/78941076</link><guid>https://blog.youkuaiyun.com/wangyanming123/article/details/78941076</guid><author>wangyanming123</author><pubDate>Sun, 31 Dec 2017 11:25:43 +0800</pubDate><description><![CDATA[如果switch语句中的分支固定，且不可变（例如，星期中只有7天）不用使用工厂方法替换；如果分支不固定，或将来有可能改，可以采用工厂方法来替换switch语句，这样就符合开发闭合原则。]]></description><category></category></item><item><title><![CDATA[JavaScript入门]]></title><link>https://blog.youkuaiyun.com/wangyanming123/article/details/70548466</link><guid>https://blog.youkuaiyun.com/wangyanming123/article/details/70548466</guid><author>wangyanming123</author><pubDate>Sun, 23 Apr 2017 21:28:22 +0800</pubDate><description><![CDATA[1.Javascript代码在html中的使用： 
（1）.在HTML文件中直接写（可以在head或body，建议声明在head,使用在body）。 
（2）直接引用其他*.js文件。<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transi]]></description><category></category></item><item><title><![CDATA[MySQL数据库连接测试程序]]></title><link>https://blog.youkuaiyun.com/wangyanming123/article/details/70185161</link><guid>https://blog.youkuaiyun.com/wangyanming123/article/details/70185161</guid><author>wangyanming123</author><pubDate>Sat, 15 Apr 2017 16:22:08 +0800</pubDate><description><![CDATA[MySQL数据库连接测试程序：import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;public class MySQLConnTest {
    public static final String DBDRIVER =]]></description><category></category></item><item><title><![CDATA[报账系统相关信息]]></title><link>https://blog.youkuaiyun.com/wangyanming123/article/details/68916189</link><guid>https://blog.youkuaiyun.com/wangyanming123/article/details/68916189</guid><author>wangyanming123</author><pubDate>Fri, 31 Mar 2017 07:20:51 +0800</pubDate><description><![CDATA[相关配置信息]]></description><category></category></item><item><title><![CDATA[抽奖]]></title><link>https://blog.youkuaiyun.com/wangyanming123/article/details/66491220</link><guid>https://blog.youkuaiyun.com/wangyanming123/article/details/66491220</guid><author>wangyanming123</author><pubDate>Sun, 26 Mar 2017 21:42:23 +0800</pubDate><description><![CDATA[1、模型：package com.huawei.model;
/**
 * 模型
 * @author wym
 *
 */
public class Person {    private String memberNum;
    private String name;
    public Person() {
        super();
    }    public Person(]]></description><category></category></item><item><title><![CDATA[Struts2中的拦截器入门]]></title><link>https://blog.youkuaiyun.com/wangyanming123/article/details/52915875</link><guid>https://blog.youkuaiyun.com/wangyanming123/article/details/52915875</guid><author>wangyanming123</author><pubDate>Mon, 24 Oct 2016 21:27:32 +0800</pubDate><description><![CDATA[1。Struts.xml文件：<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
    "http://struts.apache.org/dtds/struts-2.3.dtd"><]]></description><category></category></item><item><title><![CDATA[实现日期的增加]]></title><link>https://blog.youkuaiyun.com/wangyanming123/article/details/52901791</link><guid>https://blog.youkuaiyun.com/wangyanming123/article/details/52901791</guid><author>wangyanming123</author><pubDate>Sun, 23 Oct 2016 15:01:30 +0800</pubDate><description><![CDATA[import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;import javax.xml.crypto.Data;
public class Test{    public static void main(Strin]]></description><category></category></item><item><title><![CDATA[程序员的自我修养]]></title><link>https://blog.youkuaiyun.com/wangyanming123/article/details/52876820</link><guid>https://blog.youkuaiyun.com/wangyanming123/article/details/52876820</guid><author>wangyanming123</author><pubDate>Thu, 20 Oct 2016 20:54:41 +0800</pubDate><description><![CDATA[转自：http://www.cnblogs.com/printhelloworld/p/5698984.html?spm=5176.8217306.rtdmain.34.kNsoS3 
    今天逛博客园，看到了一篇推荐的文章《浅谈程序员的英语学习》，就点进去看了一下，对于文章中的观点我非常认同，英语是非常重要的，但文章站的高度还是太高，具体表述的学习方法我不是很认同，也认为不太实际，恰好之前有一]]></description><category></category></item></channel></rss>