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	<title>jdk - 四号程序员</title>
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		<title>Ubuntu安装JDK8官方版本</title>
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		<pubDate>Thu, 10 Jan 2019 07:29:05 +0000</pubDate>
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		<category><![CDATA[Java && J2EE]]></category>
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					<description><![CDATA[sudo add-apt-repository ppa:webupd8team/java sudo apt update sudo apt install oracle-java8-installer sudo apt install oracle-java8-set-default &#160;[......] 继续阅读]]></description>
		
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		<title>升级到JDK 7后，Sort出现兼容性问题的解法。</title>
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		<dc:creator><![CDATA[coder4]]></dc:creator>
		<pubDate>Wed, 22 Jan 2014 01:52:07 +0000</pubDate>
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					<description><![CDATA[在昨天的文章 TimSort in Java 7 中，我们讨论了升级到JDK 7后，Collection的sort方法，出现兼容性问题的原因。 究其根本，还是我们写的compare函数不够严谨。 本文主要针对Hadoop、Hive，从系统的部署、配置层面提出一些解法。 1、Hive 在执行前，指定JVM选项。 set mapreduce.map.java.opts=-Xmx2000m -Djava.util.Arrays.useLegacyMergeSort=true[......] 继续阅读]]></description>
		
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		<title>[转载]TimSort in Java 7</title>
		<link>https://www.coder4.com/archives/4092</link>
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		<pubDate>Tue, 21 Jan 2014 01:58:13 +0000</pubDate>
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		<category><![CDATA[自定义排序]]></category>
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					<description><![CDATA[转载自：TimSort in Java 7 1. 为什么写这篇文章 这篇文章的根源是在产品中发现了一个诡异的bug：只能在产品环境下重现，在我的本地开发环境无法重现，而双方的代码没有任何区别。最后用remote debug的方法找到异常所在： Exception in thread &#34;main&#34; java.lang.IllegalArgumentException: Comparison method violates its general contrac[......] 继续阅读]]></description>
		
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		<title>Linux下安装JDK 1.6(解压缩方式)</title>
		<link>https://www.coder4.com/archives/1495</link>
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		<dc:creator><![CDATA[coder4]]></dc:creator>
		<pubDate>Wed, 20 Apr 2011 02:48:14 +0000</pubDate>
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					<description><![CDATA[由于服务器是共用的，不给root权限，所以只能用解压缩，安装到自己home的方式来安装jdk。 1、下载最新JDK #下载 wget http://cds-esd.sun.com/ESD6/JSCDL/jdk/6u24-b07/jdk-6u24-linux-x64.bin?AuthParam=1303266937_f832ac172b27d2af47ebec23c9a3fae1&#38;TicketId=nod2BlEYQ3d%2BnusqlEOZWZiZcg%3D%3D&#38;Gr[......] 继续阅读]]></description>
		
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		<title>Ubuntu 10.04安装JDK6</title>
		<link>https://www.coder4.com/archives/835</link>
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		<dc:creator><![CDATA[coder4]]></dc:creator>
		<pubDate>Thu, 29 Jul 2010 13:25:46 +0000</pubDate>
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		<category><![CDATA[10.04]]></category>
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					<description><![CDATA[在10.04之后，貌似sun-java-jdk就不是默认的源中的了，被作为第三方的了。 [shell] add-apt-repository &#34;deb http://archive.canonical.com/ lucid partner&#34; apt-get update apt-get install sun-java6-jdk sun-java6-plugin [/shell][......] 继续阅读]]></description>
		
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		<title>[转载]Jdk1.6+Tomcat6+Apache2+MySql5 安装(Windows版)</title>
		<link>https://www.coder4.com/archives/428</link>
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		<dc:creator><![CDATA[coder4]]></dc:creator>
		<pubDate>Thu, 18 Feb 2010 16:20:20 +0000</pubDate>
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					<description><![CDATA[前言: Apache和Tomcat是非常好的开源网页服务器，而MySql则是最好的开源数据库，用来学习Java和部署Java服务，使用JDK+Tomcat也非常不错。当前最新的版本是Apache2.5.x、Tomcat6、JDK1.6和MySql5.0.3.x是当前最新的版本，本篇详细介绍了在windows下服务环境安装过程，对于Tomcat，jdbc配置和Apache+Tomcat整合进行了详尽描述，相信看完本篇之后，新手可以很方便地搭建出JSP服务器来。而且，我觉得对与曾安装过JSP环境的[......] 继续阅读]]></description>
		
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