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In Don Denoncourt's book titled "iSeries & AS400 - Java at Work", he states the following... "I see two alternatives when using Java for AS/400 applications: one is to use RPG/COBOL for your business logic, and the other is to use EJB. In either scenario, you'd use JSP and Servlets to handle the web interface." I am designing a server side app, that will reside completely on one single AS400 machine. This application may be accessed by up to 500 users. This is the first time I design a Java app for an AS400, so I am considering all the choices. Does anyone know what the pros & cons of the two alternatives (RPG/COBOL vs. EJB) that Don Denoncourt mentions are? My main concern is performance and speed of the app/system (I am not concerned about the cross-platform issue at all in this case). I hear that java on as400 is NOT exactly lightning fast. Will using RPG for the Business Logic improve performance? It sounds like using RPG alleviates the system level concerns that EJB is supposed to help with (db persistence, transactin control, scalability, etc.). It also sounds like using RPG "could be" faster since RPG does not incur the cost of all the java object creation & garbage collection. For sure, it would help with coding of the new system since we have several legacy RPG developers and no other Java types here but me. Thoughts anyone? Thanks, Ivan __________________________________ Do you Yahoo!? Yahoo! Search - Find what you?re looking for faster http://search.yahoo.com
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