Selecting the J2EE level for your project

Choose the J2EE (Java 2 Platform, Enterprise Edition) specification level for your WebFacing application. If you are using WebSphere Application Server 5, you can choose J2EE level 1.3 or 1.2. If you are using WebSphere Application Server 3.5.6 or 4.x, choose J2EE level 1.2.

J2EE 1.3 is recommended for WebSphere Application Server 5. J2EE 1.3 offers advantages such as:
  • Automatic handling of UTF-8 datastreams: In previous versions of WebFacing or when using J2EE 1.2, UTF-8 support must be set manually.
  • Data compression: Data compression improves WebFacing performance by reducing the bandwidth required to transfer data to the end-user's browser.
Note:
  • J2EE 1.2 uses servlet specification 2.2 and JSP specification 1.1
  • J2EE 1.3 uses servlet specification 2.3 and JSP specification 1.2
  • Features such as Servlet Filters and Life Cycle Listeners are not available with J2EE 1.2

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