Leander Van Rooijen

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In 1998 Sun introduced their distributed server-side component architecture under the name of Enterprise JavaBeans (EJB). Since then, the EJB technology has seen a widespread acceptance throughout the industry. The "write once, run anywhere" philosophy embraced by the EJB specification is undoubtedly a major factor in its success. An EJB component can be built once and then deployed on different platforms without recompiling or altering the source code. The concept behind the EJB API is simple: let the application programmer concentrate on writing business logic and shield him or her from complex system-level services. To achieve this the EJB components must operate within a controlled runtime environment called the container. This container is responsible for all the system-level services, such as instance pooling, transaction handling, security, exception handlin... (more)