Java Message Service Pdf

Java Message Service (JMS) Mock Exams

Evaluation and Implementation of the Java Messaging Service (JMS)

Diploma Thesis from the year 2000 in the subject Computer Science - Technical Computer Science, grade: 1.3 (A), University of Applied Sciences Augsburg, language: English, abstract: Messaging is playing an increasingly important role in enterprise computing. Its advantages are a natural result of several factors: the trend towards peer-to-peer computing, greater platform heterogeneity, and greater modularity, coupled with the trend away from synchronous communication between processes. In its effort to stay on top of important industry trends, Sun announced April 1998 (at the JavaOne Developer Conference) its plans to publish the Java Message Service (JMS) API, an interface for using existing enterprise messaging systems in a uniform manner. The version 1.0 specification, which was released in July, provides a set of interfaces and associated semantics that define how a JMS client accesses the facilities of an enterprise messaging product. Since its release, almost twenty vendors have stepped up to endorse the specification (including companies like IBM, Oracle, and BEA) and many companies have produced implementations.

Java Message Service

This book is a thorough introduction to Java Message Service (JMS), the standard Java application program interface (API) from Sun Microsystems that supports the formal communication known as "messaging" between computers in a network. JMS provides a common interface to standard messaging protocols and to special messaging services in support of Java programs. The messages exchange crucial data between computers, rather than between users--information such as event notification and service requests. Messaging is often used to coordinate programs in dissimilar systems or written in different programming languages.Using the JMS interface, a programmer can invoke the messaging services of IBM's MQSeries, Progress Software's SonicMQ, and other popular messaging product vendors. In addition, JMS supports messages that contain serialized Java objects and messages that contain Extensible Markup Language (XML) pages.Messaging is a powerful new paradigm that makes it easier to uncouple different parts of an enterprise application. Messaging clients work by sending messages to a message server, which is responsible for delivering the messages to their destination. Message delivery is asynchronous, meaning that the client can continue working without waiting for the message to be delivered. The contents of the message can be anything from a simple text string to a serialized Java object or an XML document.Java Message Service shows how to build applications using the point-to-point and publish-and-subscribe models; how to use features like transactions and durable subscriptions to make an application reliable; and how to use messaging within Enterprise JavaBeans. It also introduces a new EJB type, the MessageDrivenBean, that is part of EJB 2.0, and discusses integration of messaging into J2EE.