Summary

For many scenarios that you will encounter you should be able to build good, robust applications with the richness of the standard J2EE programming model and services. Doing so goes a long way to ensure that your application will be portable to different application server environments. However, as you progress to deal with increasingly sophisticated and difficult application problems you will likely encounter the need for services that J2EE has not addressed yet. WebSphere provides support for these situations, in part with the services described in this chapter. You should now have a good understanding of:

• How to pass internationalization context and arbitrary application-defined context between your EJBs

• How to get notified when your application is started and stopped

• How to spin asynchronous threads of work from within your application