Java / JMX
1. What is JMX?
The Java Management Extensions (JMX) technology is a standard part of the Java Platform, Standard Edition (Java SE platform).Java Management Extensions (JMX) was introduced in J2SE 5.0 release. It provides an architecture to manage resources dynamically at runtime. JMX is used mostly in enterpris...
2. How JMX Monitoring works?
JMX Monitoring is done by querying data from Managed Beans (MBeans) that are exposed via a JVM port (JMX console). A MBean represents a resource running inside a JVM and provides data on the configuration and usage of that resource. MBeans are typically grouped into "domains" to denote where reso...
3. What is JMX Connector?
The JMX technology defines standard connectors known as JMX connectors that enable you to access JMX agents from remote management applications such as JConsole .
4. Explain JConsole tool in Java.
The JConsole graphical user interface is a monitoring tool that complies to the Java Management Extensions (JMX) specification. JConsole uses the extensive instrumentation of the Java Virtual Machine (Java VM) to provide information about the performance and resource consumption of applications r...
5. What is JPS tool in Java?
The Java Virtual Machine has the JPS (Java Process Status) tool which works like the ps command. JPS tool lists all Java Processes of a user. jps -l command outputs the full package name for the application's main class or the full path name to the application's JAR file. jps -m command outputs t...
6. Advantages of using JMX Technology.
The JMX technology provides developers the easier way to instrument Java applications, create smart agents, implement distributed management middleware and managers, and smoothly integrate these solutions into existing management and monitoring systems. The JMX technology, enables Java applicatio...
7. Define MBean in JMX.
A MBean is a managed Java object , similar to a JavaBeans, that follows the design patterns mentioned in the JMX specification. An MBean can represent a device, an application, or any resource that needs to be managed. The JMX specification defines 5 types of MBean: Standard MBeans, Dynamic MBean...
8. How do I create a Standard MBean in JMX?
A standard MBean is composed of an MBean interface and a class . The MBean interface lists the methods for all exposed attributes and operations. The class implements this interface and provides the functionality of the instrumented resource. A standard MBean is defined by writing a Java interfac...
9. What is MXBean in JMX?
A MXBean is a type of MBean that references only a predefined set of data types . In this way, you can be sure that your MBean will be usable by any client, including remote clients, without any requirement that the client have access to model-specific classes representing the types of your MBean...
