PUBLIC MARKS from roulian with tags "web services" & j2ee

The Eclipse Web Tools Platform (WTP) project extends the Eclipse platform with tools for developing J2EE Web applications. The WTP project includes the following tools: source editors for HTML, Javascript, CSS, JSP, SQL, XML, DTD, XSD, and WSDL; graphical editors for XSD and WSDL; J2EE project natures, builders, and models and a J2EE navigator; a Web service wizard and explorer, and WS-I Test Tools; and database access and query tools and models.

This Howto describes how to create a Web Service Endpoint and a J2EE client that uses this web service. The endpoint will provide a method for computing the compound interest from an initial investment, an interest rate (percent) and a time quantity.

The evolution of Web-related technologies has changed the way applications in an organization communicate with customer and partner applications. Like every popular technology, Web services came like a wave and have assimilated deeply into IT organizations. Having revolutionized the IT world, Web services are here to stay. Thus, to compete in the market space, certain parts of your enterprise applications must be exposed as Web services.

Considering what they are, Enterprise JavaBeans are "easy". As of EJB 2.0 they became even easier. And as of EJB 2.1 you can generate Web services from EJBs. You could say EJBs are too easy. You can create EJBs using an IDE with just a few mouse clicks. What could be easier? A major value of EJBs is their contribution to a set of business standards. EJBs enable scalable distributed transactions and connection to a vast array of Internet services - a modern version of what mainframe transaction systems used to do. However, no matter how easy EJBs may look, you need to be discressionary and careful about usign them. Scalability and distributed services, the platform architecture for EJB and J2EE have been a complex undertaking. And to understand how to write, integrate, and deploy EJBs, you need to understand this platform architecture.