Binary Compatibility

In this Application Server 9 release, the included Java SDK is The Java Platform, Enterprise Edition version 5 SDK (Java EE 5). This version of the Java EE is upwards binary-compatible with J2EE SDK 1.3, 1.4, and 1.5, except for the incompatibilities listed below. This means that, except for the noted incompatibilities, applications built for version 1.4 run correctly in the Sun Java System Application Server 9 release.