Elizabeth Blair

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Many J2EE 1.2-based applications and components are emerging in the marketplace as the J2EE platform matures. Application portability is one of the most important benefits offered by the J2EE platform. Through the J2EE Java Pet Store sample application, the J2EE Blueprints team has developed a set of best practices for ensuring application portability across J2EE-compatible application servers. This article is the first in a series of J2EE application and component portability recommendations for the J2EE development community. This series will focus J2EE application portability in light of maturing J2EE technologies, especially J2EE 1.3 and EJB 2.0. This first article presents several portability guidelines for the J2EE platform, version 1.2, but includes references to the upcoming version 1.3 where appropriate. This article assumes that the reader is familiar with... (more)

Build to Spec!

While J2EE technology is designed to support portability, it's always possible to write nonportable code. In Part 2 of this series, we (the BluePrints development team) offer recommendations on how to avoid specific design, implementation, and deployment pitfalls that can compromise portability. A comprehensive collection of the J2EE BluePrints application programming model can be found at http://java.sun.com/j2ee/blueprints. This month, our recommendations are: Deploy each Web application with a unique context root to avoid colliding with other applications. Use handles or rem... (more)