J2EE™ Tutorial, The

Application Client

Sometimes, enterprise applications use a stand-alone client application for handling tasks such as system or application administration. For example, the Duke’s Bank application uses a J2EE application client to manually administer customers and accounts. This capability is useful in the event the site becomes inaccessible for any reason or a customer prefers to communicate things such as changes to account information by phone.

A J2EE application client is a standalone program launched from the command line or desktop; it accesses enterprise beans running on the J2EE application server.

The application client shown in Figure 18-4 handles basic customer and account administration for the banking application through a Swing ...