BlogJava-xmatthew-随笔分类-Best Practise(JDK API)http://www.blogjava.net/xmatthew/category/35677.html孤独键盘手zh-cnThu, 21 Feb 2013 04:16:53 GMTThu, 21 Feb 2013 04:16:53 GMT60源码实现实时获取Java堆内存信息http://www.blogjava.net/xmatthew/archive/2013/02/20/395471.htmlx.matthewx.matthewWed, 20 Feb 2013 08:30:00 GMThttp://www.blogjava.net/xmatthew/archive/2013/02/20/395471.htmlhttp://www.blogjava.net/xmatthew/comments/395471.htmlhttp://www.blogjava.net/xmatthew/archive/2013/02/20/395471.html#Feedback0http://www.blogjava.net/xmatthew/comments/commentRss/395471.htmlhttp://www.blogjava.net/xmatthew/services/trackbacks/395471.html 但由于传统的分析过程比较麻烦，需要使用Jdk的jmap(Java Memory Map)命令把heap内存dump到一个文件，然后用MAT进行分析。所以本文介绍一种方法可以实现在线查看heap内存的使用情况，并附上源码实现，希望对大家有帮助。由于目前调研中只找到了Sun JDK6以及以上版本的实现，所以目前该方案只支持Sun JDK6或以上。如果其他同学有其它版本的JDK实现分享，欢迎一起交流。  阅读全文

x.matthew 2013-02-20 16:30 发表评论
]]>JDK 并发API学习笔记之CyclicBarrier同步器http://www.blogjava.net/xmatthew/archive/2012/06/28/380707.htmlx.matthewx.matthewThu, 28 Jun 2012 05:34:00 GMThttp://www.blogjava.net/xmatthew/archive/2012/06/28/380707.htmlhttp://www.blogjava.net/xmatthew/comments/380707.htmlhttp://www.blogjava.net/xmatthew/archive/2012/06/28/380707.html#Feedback1http://www.blogjava.net/xmatthew/comments/commentRss/380707.htmlhttp://www.blogjava.net/xmatthew/services/trackbacks/380707.html阅读全文

x.matthew 2012-06-28 13:34 发表评论
]]>LRUMap 源代码实现解读http://www.blogjava.net/xmatthew/archive/2012/06/28/380150.htmlx.matthewx.matthewThu, 28 Jun 2012 05:34:00 GMThttp://www.blogjava.net/xmatthew/archive/2012/06/28/380150.htmlhttp://www.blogjava.net/xmatthew/comments/380150.htmlhttp://www.blogjava.net/xmatthew/archive/2012/06/28/380150.html#Feedback0http://www.blogjava.net/xmatthew/comments/commentRss/380150.htmlhttp://www.blogjava.net/xmatthew/services/trackbacks/380150.html首先介绍一下LRU算法. LRU是由Least Recently Used的首字母组成，表示最近最少使用的含义，一般使用在对象淘汰算法上。也是比较常见的一种淘汰算法。  阅读全文

x.matthew 2012-06-28 13:34 发表评论
]]>Thrift学习笔记(原创)http://www.blogjava.net/xmatthew/archive/2011/11/12/347908.htmlx.matthewx.matthewSat, 12 Nov 2011 10:57:00 GMThttp://www.blogjava.net/xmatthew/archive/2011/11/12/347908.htmlhttp://www.blogjava.net/xmatthew/comments/347908.htmlhttp://www.blogjava.net/xmatthew/archive/2011/11/12/347908.html#Feedback2http://www.blogjava.net/xmatthew/comments/commentRss/347908.htmlhttp://www.blogjava.net/xmatthew/services/trackbacks/347908.html本文通过一个实例来介绍一下Thrift最基本的应用。  阅读全文

x.matthew 2011-11-12 18:57 发表评论
]]>如何做到API兼容(转载)http://www.blogjava.net/xmatthew/archive/2011/07/29/355360.htmlx.matthewx.matthewFri, 29 Jul 2011 11:35:00 GMThttp://www.blogjava.net/xmatthew/archive/2011/07/29/355360.htmlhttp://www.blogjava.net/xmatthew/comments/355360.htmlhttp://www.blogjava.net/xmatthew/archive/2011/07/29/355360.html#Feedback0http://www.blogjava.net/xmatthew/comments/commentRss/355360.htmlhttp://www.blogjava.net/xmatthew/services/trackbacks/355360.html阅读全文

x.matthew 2011-07-29 19:35 发表评论
]]>Tomcat7 StuckThreadDetectionValve 功能分析http://www.blogjava.net/xmatthew/archive/2011/05/25/350822.htmlx.matthewx.matthewWed, 25 May 2011 13:51:00 GMThttp://www.blogjava.net/xmatthew/archive/2011/05/25/350822.htmlhttp://www.blogjava.net/xmatthew/comments/350822.htmlhttp://www.blogjava.net/xmatthew/archive/2011/05/25/350822.html#Feedback4http://www.blogjava.net/xmatthew/comments/commentRss/350822.htmlhttp://www.blogjava.net/xmatthew/services/trackbacks/350822.html阅读全文

x.matthew 2011-05-25 21:51 发表评论
]]>通JMX连接glassfish服务器http://www.blogjava.net/xmatthew/archive/2010/03/29/300070.htmlx.matthewx.matthewMon, 29 Mar 2010 07:42:00 GMThttp://www.blogjava.net/xmatthew/archive/2010/03/29/300070.htmlhttp://www.blogjava.net/xmatthew/comments/300070.htmlhttp://www.blogjava.net/xmatthew/archive/2010/03/29/300070.html#Feedback0http://www.blogjava.net/xmatthew/comments/commentRss/300070.htmlhttp://www.blogjava.net/xmatthew/services/trackbacks/300070.html
 通过jmx rmi 连接：
          HashMap env = new HashMap(1); 
        final String[]    credentials    = new String[] { "admin", "adminadmin" };
        env.put( JMXConnector.CREDENTIALS, credentials );
        // so our JMXConnectorProvider may be found
        //env.put( JMXConnectorFactory.PROTOCOL_PROVIDER_PACKAGES, "com.sun.enterprise.admin.jmx.remote.protocol" );
        JMXServiceURL serviceURL = new JMXServiceURL( "service:jmx:rmi:///jndi/rmi://localhost:8686/management/rmi-jmx-connector");
        JMXConnector connector = JMXConnectorFactory.connect(serviceURL , env); 
        MBeanServerConnection connection = connector.getMBeanServerConnection(); 
            
        Object o = connection.invoke(new ObjectName("com.sun.appserv:type=domain,category=config"), "getName", new Object[]{}, new String[]{});
        System.out.println(o);
 通过jmx http连接
        HashMap env = new HashMap(4);
        env.put( "com.sun.enterprise.as.http.auth", "BASIC" );
        env.put( "USER", "admin" );
        env.put( "PASSWORD", "adminadmin" );
        env.put( JMXConnectorFactory.PROTOCOL_PROVIDER_PACKAGES, "com.sun.enterprise.admin.jmx.remote.protocol" );
        JMXServiceURL serviceURL = new JMXServiceURL("s1ashttp", "localhost", 4848);
        final JMXConnector conn    = JMXConnectorFactory.connect( serviceURL, env );
        MBeanServerConnection connection = conn.getMBeanServerConnection(); 
        
        Object o = connection.invoke(new ObjectName("com.sun.appserv:type=domain,category=config"), "getName", new Object[]{}, new String[]{});
        System.out.println(o);


Good Luck!
Yours Matthew!



x.matthew 2010-03-29 15:42 发表评论
]]>Java IO部分的学习笔记http://www.blogjava.net/xmatthew/archive/2009/06/13/281986.htmlx.matthewx.matthewSat, 13 Jun 2009 02:38:00 GMThttp://www.blogjava.net/xmatthew/archive/2009/06/13/281986.htmlhttp://www.blogjava.net/xmatthew/comments/281986.htmlhttp://www.blogjava.net/xmatthew/archive/2009/06/13/281986.html#Feedback6http://www.blogjava.net/xmatthew/comments/commentRss/281986.htmlhttp://www.blogjava.net/xmatthew/services/trackbacks/281986.html  阅读全文

x.matthew 2009-06-13 10:38 发表评论
]]>svenson, 一个用于生成和解析JSON数据格式的Java5开源类库http://www.blogjava.net/xmatthew/archive/2008/12/29/248998.htmlx.matthewx.matthewMon, 29 Dec 2008 13:35:00 GMThttp://www.blogjava.net/xmatthew/archive/2008/12/29/248998.htmlhttp://www.blogjava.net/xmatthew/comments/248998.htmlhttp://www.blogjava.net/xmatthew/archive/2008/12/29/248998.html#Feedback0http://www.blogjava.net/xmatthew/comments/commentRss/248998.htmlhttp://www.blogjava.net/xmatthew/services/trackbacks/248998.html阅读全文

x.matthew 2008-12-29 21:35 发表评论
]]>Java对象XML序列化框架－Simple2.0http://www.blogjava.net/xmatthew/archive/2008/12/10/245558.htmlx.matthewx.matthewWed, 10 Dec 2008 12:16:00 GMThttp://www.blogjava.net/xmatthew/archive/2008/12/10/245558.htmlhttp://www.blogjava.net/xmatthew/comments/245558.htmlhttp://www.blogjava.net/xmatthew/archive/2008/12/10/245558.html#Feedback1http://www.blogjava.net/xmatthew/comments/commentRss/245558.htmlhttp://www.blogjava.net/xmatthew/services/trackbacks/245558.html阅读全文

x.matthew 2008-12-10 20:16 发表评论
]]>使用ftp4j类来实现FTP操作http://www.blogjava.net/xmatthew/archive/2008/12/01/243346.htmlx.matthewx.matthewMon, 01 Dec 2008 00:13:00 GMThttp://www.blogjava.net/xmatthew/archive/2008/12/01/243346.htmlhttp://www.blogjava.net/xmatthew/comments/243346.htmlhttp://www.blogjava.net/xmatthew/archive/2008/12/01/243346.html#Feedback8http://www.blogjava.net/xmatthew/comments/commentRss/243346.htmlhttp://www.blogjava.net/xmatthew/services/trackbacks/243346.html阅读全文

x.matthew 2008-12-01 08:13 发表评论
]]>使用cobertura来测量单元测试的代码覆盖情况http://www.blogjava.net/xmatthew/archive/2008/11/25/242658.htmlx.matthewx.matthewTue, 25 Nov 2008 14:47:00 GMThttp://www.blogjava.net/xmatthew/archive/2008/11/25/242658.htmlhttp://www.blogjava.net/xmatthew/comments/242658.htmlhttp://www.blogjava.net/xmatthew/archive/2008/11/25/242658.html#Feedback2http://www.blogjava.net/xmatthew/comments/commentRss/242658.htmlhttp://www.blogjava.net/xmatthew/services/trackbacks/242658.html阅读全文

x.matthew 2008-11-25 22:47 发表评论
]]>Java Base64类库学习笔记http://www.blogjava.net/xmatthew/archive/2008/11/25/242124.htmlx.matthewx.matthewTue, 25 Nov 2008 12:23:00 GMThttp://www.blogjava.net/xmatthew/archive/2008/11/25/242124.htmlhttp://www.blogjava.net/xmatthew/comments/242124.htmlhttp://www.blogjava.net/xmatthew/archive/2008/11/25/242124.html#Feedback0http://www.blogjava.net/xmatthew/comments/commentRss/242124.htmlhttp://www.blogjava.net/xmatthew/services/trackbacks/242124.html阅读全文

x.matthew 2008-11-25 20:23 发表评论
]]>JSON taglib学习笔记http://www.blogjava.net/xmatthew/archive/2008/11/03/238216.htmlx.matthewx.matthewMon, 03 Nov 2008 11:30:00 GMThttp://www.blogjava.net/xmatthew/archive/2008/11/03/238216.htmlhttp://www.blogjava.net/xmatthew/comments/238216.htmlhttp://www.blogjava.net/xmatthew/archive/2008/11/03/238216.html#Feedback0http://www.blogjava.net/xmatthew/comments/commentRss/238216.htmlhttp://www.blogjava.net/xmatthew/services/trackbacks/238216.html阅读全文

x.matthew 2008-11-03 19:30 发表评论
]]>Java工具类学习笔记http://www.blogjava.net/xmatthew/archive/2008/10/25/236581.htmlx.matthewx.matthewSat, 25 Oct 2008 12:21:00 GMThttp://www.blogjava.net/xmatthew/archive/2008/10/25/236581.htmlhttp://www.blogjava.net/xmatthew/comments/236581.htmlhttp://www.blogjava.net/xmatthew/archive/2008/10/25/236581.html#Feedback5http://www.blogjava.net/xmatthew/comments/commentRss/236581.htmlhttp://www.blogjava.net/xmatthew/services/trackbacks/236581.html阅读全文

x.matthew 2008-10-25 20:21 发表评论
]]>(原创)Java实现一个读取Properties配置文件的实现类http://www.blogjava.net/xmatthew/archive/2008/04/13/192534.htmlx.matthewx.matthewSun, 13 Apr 2008 04:18:00 GMThttp://www.blogjava.net/xmatthew/archive/2008/04/13/192534.htmlhttp://www.blogjava.net/xmatthew/comments/192534.htmlhttp://www.blogjava.net/xmatthew/archive/2008/04/13/192534.html#Feedback4http://www.blogjava.net/xmatthew/comments/commentRss/192534.htmlhttp://www.blogjava.net/xmatthew/services/trackbacks/192534.html阅读全文

x.matthew 2008-04-13 12:18 发表评论
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