<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[ChengWeiUser的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/ChengWeiUser</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; ChengWeiUser]]></copyright><item><title><![CDATA[05 线程源码]]></title><link>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108992985</link><guid>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108992985</guid><author>ChengWeiUser</author><pubDate>Wed, 14 Oct 2020 17:17:42 +0800</pubDate><description><![CDATA[百度云盘: https://pan.baidu.com/s/1Mf3J7TkVtPQykEMoEfc5QQ 提取码: gtwj




]]></description><category></category></item><item><title><![CDATA[04 队列源码]]></title><link>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108992916</link><guid>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108992916</guid><author>ChengWeiUser</author><pubDate>Wed, 14 Oct 2020 17:17:32 +0800</pubDate><description><![CDATA[百度云盘: https://pan.baidu.com/s/1Mf3J7TkVtPQykEMoEfc5QQ 提取码: gtwj




]]></description><category></category></item><item><title><![CDATA[03 并发集合源码]]></title><link>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108992874</link><guid>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108992874</guid><author>ChengWeiUser</author><pubDate>Wed, 14 Oct 2020 17:17:18 +0800</pubDate><description><![CDATA[百度云盘: https://pan.baidu.com/s/1Mf3J7TkVtPQykEMoEfc5QQ 提取码: gtwj




]]></description><category></category></item><item><title><![CDATA[02 集合源码]]></title><link>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108992729</link><guid>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108992729</guid><author>ChengWeiUser</author><pubDate>Wed, 14 Oct 2020 17:17:11 +0800</pubDate><description><![CDATA[百度云盘: https://pan.baidu.com/s/1Mf3J7TkVtPQykEMoEfc5QQ 提取码: gtwj




]]></description><category></category></item><item><title><![CDATA[01 String及八种包装类源码]]></title><link>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108992706</link><guid>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108992706</guid><author>ChengWeiUser</author><pubDate>Wed, 14 Oct 2020 17:17:05 +0800</pubDate><description><![CDATA[百度云盘: https://pan.baidu.com/s/1Mf3J7TkVtPQykEMoEfc5QQ 提取码: gtwj




]]></description><category></category></item><item><title><![CDATA[Guava使用教程]]></title><link>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108993106</link><guid>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108993106</guid><author>ChengWeiUser</author><pubDate>Wed, 14 Oct 2020 17:16:57 +0800</pubDate><description><![CDATA[百度云盘: https://pan.baidu.com/s/1MmaRV5j-hGwvdjchZ87P-A 提取码: mr93




]]></description><category></category></item><item><title><![CDATA[Zookeeper使用教程]]></title><link>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108993167</link><guid>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108993167</guid><author>ChengWeiUser</author><pubDate>Wed, 14 Oct 2020 17:16:49 +0800</pubDate><description><![CDATA[百度云盘: https://pan.baidu.com/s/1UWdlVm6hPZSaKxGSzRnl3g 提取码: sdz8




]]></description><category></category></item><item><title><![CDATA[06 IO]]></title><link>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108992248</link><guid>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108992248</guid><author>ChengWeiUser</author><pubDate>Sat, 10 Oct 2020 10:30:24 +0800</pubDate><description><![CDATA[百度云盘: https://pan.baidu.com/s/1YafajFt-N2S40AO9TMetEQ 提取码: 8h8b








]]></description><category></category></item><item><title><![CDATA[Shell 编程]]></title><link>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108991756</link><guid>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108991756</guid><author>ChengWeiUser</author><pubDate>Sat, 10 Oct 2020 10:10:28 +0800</pubDate><description><![CDATA[百度云盘: https://pan.baidu.com/s/1xDbPAb4ZpWGEDoCQAjo59A 提取码: akic




]]></description><category></category></item><item><title><![CDATA[10 状态模式]]></title><link>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108991598</link><guid>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108991598</guid><author>ChengWeiUser</author><pubDate>Sat, 10 Oct 2020 10:04:18 +0800</pubDate><description><![CDATA[百度云盘:https://pan.baidu.com/s/1mK0Sl3vPc5qoIlXNs4Nt3Q提取码: yacb

代码地址:https://gitee.com/powerCheng/learn_designmode.git




]]></description><category></category></item><item><title><![CDATA[09 模板模式]]></title><link>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108991297</link><guid>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108991297</guid><author>ChengWeiUser</author><pubDate>Sat, 10 Oct 2020 09:51:32 +0800</pubDate><description><![CDATA[百度云盘:https://pan.baidu.com/s/1mK0Sl3vPc5qoIlXNs4Nt3Q提取码: yacb

代码地址:https://gitee.com/powerCheng/learn_designmode.git




]]></description><category></category></item><item><title><![CDATA[08 命令模式]]></title><link>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108991205</link><guid>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108991205</guid><author>ChengWeiUser</author><pubDate>Sat, 10 Oct 2020 09:47:52 +0800</pubDate><description><![CDATA[百度云盘:https://pan.baidu.com/s/1mK0Sl3vPc5qoIlXNs4Nt3Q提取码: yacb

代码地址:https://gitee.com/powerCheng/learn_designmode.git




]]></description><category></category></item><item><title><![CDATA[07 观察者模式]]></title><link>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108990954</link><guid>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108990954</guid><author>ChengWeiUser</author><pubDate>Sat, 10 Oct 2020 09:36:12 +0800</pubDate><description><![CDATA[百度云盘:https://pan.baidu.com/s/1mK0Sl3vPc5qoIlXNs4Nt3Q提取码: yacb

代码地址:https://gitee.com/powerCheng/learn_designmode.git




]]></description><category></category></item><item><title><![CDATA[10 策略模式]]></title><link>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108990804</link><guid>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108990804</guid><author>ChengWeiUser</author><pubDate>Sat, 10 Oct 2020 09:28:22 +0800</pubDate><description><![CDATA[百度云盘:https://pan.baidu.com/s/1mK0Sl3vPc5qoIlXNs4Nt3Q提取码: yacb

代码地址:https://gitee.com/powerCheng/learn_designmode.git




]]></description><category></category></item><item><title><![CDATA[06 代理模式]]></title><link>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108990345</link><guid>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108990345</guid><author>ChengWeiUser</author><pubDate>Sat, 10 Oct 2020 09:01:45 +0800</pubDate><description><![CDATA[百度云盘:https://pan.baidu.com/s/1mK0Sl3vPc5qoIlXNs4Nt3Q提取码: yacb

代码地址:https://gitee.com/powerCheng/learn_designmode.git




]]></description><category></category></item><item><title><![CDATA[05 装饰器模式]]></title><link>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108989911</link><guid>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108989911</guid><author>ChengWeiUser</author><pubDate>Sat, 10 Oct 2020 08:17:09 +0800</pubDate><description><![CDATA[百度云盘:https://pan.baidu.com/s/1mK0Sl3vPc5qoIlXNs4Nt3Q提取码: yacb

代码地址:https://gitee.com/powerCheng/learn_designmode.git




]]></description><category></category></item><item><title><![CDATA[04 外观模式]]></title><link>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108982511</link><guid>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108982511</guid><author>ChengWeiUser</author><pubDate>Sat, 10 Oct 2020 08:03:50 +0800</pubDate><description><![CDATA[百度云盘:https://pan.baidu.com/s/1mK0Sl3vPc5qoIlXNs4Nt3Q提取码: yacb




]]></description><category></category></item><item><title><![CDATA[03 适配器模式]]></title><link>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108982421</link><guid>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108982421</guid><author>ChengWeiUser</author><pubDate>Fri, 09 Oct 2020 17:11:37 +0800</pubDate><description><![CDATA[百度云盘:https://pan.baidu.com/s/1mK0Sl3vPc5qoIlXNs4Nt3Q提取码: yacb




]]></description><category></category></item><item><title><![CDATA[02 工厂模式]]></title><link>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108982323</link><guid>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108982323</guid><author>ChengWeiUser</author><pubDate>Fri, 09 Oct 2020 17:08:18 +0800</pubDate><description><![CDATA[百度云盘:https://pan.baidu.com/s/1mK0Sl3vPc5qoIlXNs4Nt3Q提取码: yacb




]]></description><category></category></item><item><title><![CDATA[01 单例模式]]></title><link>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108975463</link><guid>https://blog.youkuaiyun.com/ChengWeiUser/article/details/108975463</guid><author>ChengWeiUser</author><pubDate>Fri, 09 Oct 2020 11:24:58 +0800</pubDate><description><![CDATA[饿汉模式
	

/**
 * 单例的饿汉模式
 *
 * @author chengwei
 * @date 2019-06-06 10:01
 */
public class Singleton {
    /** 当加载Singleton.class时创建该对象 */
    private static Singleton singleton = new Singleton();

    /** 注意将构造器改为私有的 */
    private Singleton() {
    }

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