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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii" /><meta http-equiv="Content-Type" content="text/html; charset=us-ascii" /><title>Java Management Extensions (JMX)</title><link rel="shortcut icon" href="../../images/nanoduke.ico" /><link rel="stylesheet" type="text/css" href="../../page.css" /><script type="text/javascript" src="../../page.js"><noscript></noscript></script><script src="https://cdn.usefathom.com/script.js" data-site="KCYJJPZX" defer="yes"></script></head><body><div id="main"> <h1>The Java<font size="-2">TM</font>Management Extensions (JMX) API</h1> <p>This <a href="/groups/index.html">group</a> is dedicated to the Java<sup><font size="-2">TM</font></sup> Management Extensions (JMX<sup><font size="-2">TM</font></sup>) API in project <a href="/index.html">OpenJDK</a>.</p> <h2>Introduction</h2> <p>The JMX API is a standard API for management and monitoring of resources such as applications, devices, services, and the Java virtual machine.</p> <p>Typical uses of the JMX technology include:</p> <ul> <li>Consulting and changing application configuration.</li> <li>Accumulating and publishing statistics about application behavior.</li> <li>Notifying users or applications of state changes and erroneous conditions.</li> </ul> <p>The JMX API includes remote access, so a remote management program can interact with a running application for the above purposes.</p> <h2><a name="Specifications" id="Specifications">Specifications</a></h2> <p>The JMX technology is developed through the Java Community Process (JCP). In JDK versions 5.0 and 6, the JMX technology was developed as <a href="https://www.jcp.org/en/jsr/detail?id=3">Java Specification Request (JSR) 3</a>, Java Management Extensions, and <a href="https://www.jcp.org/en/jsr/detail?id=160">JSR 160</a>, JMX Remote API. Evolutions of the JMX API and JMX Remote API in JDK version 7 are covered by <a href="https://www.jcp.org/en/jsr/detail?id=255">JSR 255</a>, JMX API 2.0.</p> <h2>JMX Implementation Sources</h2> <p>The JMX implementation is composed of the following packages :</p> <ul> <li><b><tt>javax.management</tt> and sub-packages</b>: The public JMX API packages. The evolution of these APIs is governed by the JMX <a href="#Specifications">Specifications</a>.</li> <li><b><tt>com.sun.jmx</tt> and sub-packages</b>: The private Sun implementation packages. These packages constitute a private API which is subject to changes. Only JDK software library classes should call these APIs.</li> </ul> <h2><a name="Contribute" id="Contribute">Contributing</a> to the JMX API</h2> <p>To contribute to the JMX API, make sure you read the page explaining <a href="/contribute.html">how to contribute</a> to OpenJDK, and follow the rules and guidelines described there. You will find out that there can be many ways to contribute: one of them is to contribute to the <a href="/groups/quality/">quality</a>.</p> <p>The JMX API is a pure Java class library. It does not contain any native code.</p> <p>You might be also interested in contributing to <a href="/tools/svc/jconsole/index.html">JConsole</a>. The jconsole tool is a JMX-compliant graphical tool for monitoring a Java virtual machine.</p> <h2>Debugging and Troubleshooting Tips</h2> <p>The JMX technology uses the <tt>java.util.logging</tt> API to print debug traces. You can activate these traces by providing a <tt>logging.properties</tt> file on the command line when you run your Java application.</p> <h2>Documentation</h2> <ul> <li>The specialized <a href="http://java.sun.com/docs/books/tutorial/jmx/">JMX Trail</a> from the online <a href="http://java.sun.com/docs/books/tutorial/">Java Tutorials</a>.</li> <li>The <a href="http://java.sun.com/javase/technologies/core/mntr-mgmt/JavaManagement/index.jsp"> JMX Technology's Home Page</a> - The page for news, downloads, blogs and other information about the JMX specification.</li> <li>The JDK version 6 <a href="http://java.sun.com/javase/6/docs/technotes/guides/jmx/index.html"> JMX Technology Guides</a> - The page for tutorials, API documentation, and links.</li> </ul> <h2>Community</h2> <ul> <li><strong>Mailing lists</strong> <ul> <li><a href="https://mail.openjdk.org/mailman/listinfo/jmx-dev">jmx-dev</a></li> </ul> </li> </ul> </div><div id="sidebar"><div id="openjdk-sidebar-logo"><a href="/"><img 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