Communicating with JMX agents - JMX in Action - page 226

Be sure to invoke the new method from the agent's constructor. In addition, you
will need to import the jmxbook.ch9 package. It is like all the other connectivity
methods of the agent—it creates the MBean, registers it on the MBean server,
and invokes its start() method. Use the HTML adapter (via a web browser) if you
need to change the port value of the adapter.

9.5.2 Testing the TCP adapter

With everything else completed, it is time to write a simple test program for the
TCP adapter (see listing 9.11). The test program is defined by the class TCPTester ,
and it performs all four tasks available to the adapter.

Listing 9.11 TCPTester.java

package jmxbook.ch9;

import java.net.*;
import javax.management.*;
import java.io.*;

public class TCPTester
{

public TCPTester( String port ) throws Exception
{
Socket s = new Socket( "localhost", Integer.parseInt( port ) );
PrintWriter print = new PrintWriter( s.getOutputStream() );

//create a Hello World MBean

print.println( TCPAdapter.CREATE_MBEAN );
print.flush();
print.println( "jmxbook.ch2.HelloWorld" );
print.flush();
print.println( "JMXBookAgent:name=TCPCreatedHW" );
print.flush();
print.println( TCPAdapter.ARGS );
print.flush();
print.println( "This is my greeting" );
print.flush();
print.println( "java.lang.String" );
print.flush();

BufferedReader in = new BufferedReader(
new InputStreamReader(
s.getInputStream() ) );

System.out.println( in.readLine() );
Thread.sleep(10000);

//reset the greeting