Mbean technology in Java allows for real-time monitoring and manipulation of computer processes. MBeans provide a way to embed custom management code into an application, allowing for effective resource management and remote access through JMX technology. JConsole is a monitoring and management console using JMX and Mbeans.
All software requires management of IT services and hardware devices. These services are responsible for network connectivity, database support, and computer hardware devices. Mbean technology provides a method for Java applications to manage a computer’s resources within a software application. An MBean is the Java virtual representation of a device or resource within a computer. MBeans expose a management interface that allows for manipulation of resource attributes and functional operations, which allow for real-time monitoring and manipulation of computer processes.
Java is a software programming language that uses object-oriented design for software development. Within Java, each component is considered an object that has specific relevance to real word concepts, similar to nouns in the English language. An Mbean is a special java object which is a manageable resource or service within an application.
MBeans provide the plumbing for embedding custom management code into an application. Multiple functions can be exposed within one application as an MBean. Through the use of MBeans, a system administrator can invoke operations on monitored applications, as well as receive notifications about events in the application.
A good example of practical use of Mbeans is through effective resource management. A typical system administrator will monitor the health and well-being of a software application by monitoring vital signs, which include memory, CPU, and server connections. Using Mbeans in an application, the system administrator can get alerts when a system starts approaching a memory threshold. This proactive approach to monitoring gives the system administrator sufficient time to mitigate problems.
Within java, the Java Management Extension (JMX) allows remote access to software application using Mbeans as a technique to manage available resources. The MBean creates controllable endpoints of an application, where remote clients can manipulate the internal workings of the software. The use of JMX technology helps system administrators optimize and monitor business applications.
Mbeans were first introduced in JMX technology with the java 2 platform, standard edition 5.0. Java version 6 includes support for JConsole, which is a monitoring and management console using JMX and Mbeans. This tool allows monitoring of various resources during system runtime. It is typically used to detect symptoms of an application’s deadlocks and memory leaks. As with any Mbean, it can connect to a local or remote Java application.
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