MBean Example in JBoss

A Hello World Service

package com.acme;



import org.jboss.system.ServiceMBean;



public interface HelloWorldServiceMBean extends ServiceMBean

{

// Configure getters and setters for the message attribute

String getMessage();

void setMessage(String message);



// The print message operation

void printMessage();

}







package com.acme;



import org.jboss.system.ServiceMBeanSupport;



public class HelloWorldService extends ServiceMBeanSupport implements HelloWorldServiceMBean

{

// Our message attribute

private String message = "Sorry no message today";



// Getters and Setters

public String getMessage()

{

return message;

}

public void setMessage(String message)

{

this.message = message;

}



// The printMessage operation

public void printMessage()

{

log.info(message);

}



// The lifecycle

protected void startService() throws Exception

{

log.info("Starting with message=" + message);

}

protected void stopService() throws Exception

{

log.info("Stopping with message=" + message);

}

}

jboss-service.xml

<?xml?>

<server>

<mbean code="com.acme.HelloWorldService" name="acme.com:service=HelloWorld">

<attribute name="Message">Hello World</attribute>

</mbean>

</server>

Sar File directory structure

hello-world.sar

hello-world.sar/META-INF/jboss-service.xml

hello-world.sar/com/acme/HelloWorldService.class

hello-world.sar/com/acme/HelloWorldServiceMBean.class