JMS provides a multitude of classes, but you need to extend or instantiate them before they're of any use. Although the complexity of this process can be daunting, applying the Facade design pattern makes JMS much simpler to use.
by Eric Bruno
January 24, 2003
he Java Messaging Service (JMS) API, a Sun Microsystems interface for connecting Java programs to enterprise messaging middleware, is composed of multiple object interfaces with a hierarchy of relationships. The JMS class hierarchy in particular is extensive and can seem confusing at first glance. (Figure 1 illustrates the relationships among the classes within JMS.) However, this complexity is necessary for JMS to:
Abstract the implementation details of the underlying messaging software
Interface with existing messaging systems such as IBM's MQSeries, using familiar JavaBean paradigms
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he Java Messaging Service (JMS) API, a Sun Microsystems interface for connecting Java programs to enterprise messaging middleware, is composed of multiple object interfaces with a hierarchy of relationships. The JMS class hierarchy in particular is extensive and can seem confusing at first glance. (
