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# ==============================================================================## JMX Tutorial Introductory Example : Instrumenting Your Own Applications.# Using MXBeans.## The aim of this introductory example is to show the basic features of# the JMX technology first by instrumenting a simple resource using the new# type of MBean, i.e. MXBeans, and second by performing operations on it using# the jconsole tool. This example shows the implementation of an MXBean, how to# register it in the Platform MBean Server and how to perform remote operations# on it by connecting to the RMI connector server using the jconsole tool. The# goal of this example is to show a simple MXBean that manages a resource of# type Queue<String>. The MXBean declares a getter getQueueSample that takes# a snapshot of the queue when invoked and returns a Java class QueueSample# that bundles the following values together: the time the snapshot was taken,# the queue size and the head of the queue at that given time. The MXBean also# declares an operation clearQueue that clears all the elements in the queue# being managed. The example also shows how to register this MXBean in the# Platform MBean Server alongside the MBeans you can already see in jconsole.# This examples also shows how the existing Platform MBean Server can be# shared between the JVM and the application itself to register the application# MBeans, thus avoiding the creation of multiple MBean Server instances on the# same JVM.## ==============================================================================## In order to compile and run the example, make a copy of this README file, and# then simply cut and paste all the commands as needed into a terminal window.## This README makes the assumption that you are running under Java SE 6 on Unix,# you are familiar with the JMX technology, and with the bourne shell or korn# shell syntax.## All the commands below are defined using Unix korn shell syntax.## If you are not running Unix and korn shell you are expected to be able to# adapt these commands to your favorite OS and shell environment.## Compile Java classes## The Java classes used in this example are contained in the com.example.mxbeans# Java package.## * Main.java: gets the Platform MBean Server, and creates# and registers the QueueSampler MXBean on it.## * QueueSampler.java: implements the QueueSampler MXBean.## * QueueSamplerMXBean.java: the management interface exposed# by the QueueSampler MXBean.## * QueueSample.java: the Java type returned by the getQueueSample()# method in the QueueSampler MXBean interface.#javac com/example/mxbeans/*.java# Start the Main application#java com.example.mxbeans.Main# Start jconsole on a different shell window on the same machine## JConsole is located in $(J2SE_HOME)/bin/jconsole#jconsole# ==============================================================================
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