With the BS2000 Environment for Java (JENV), Java programs created on any platform can be executed on BS2000 systems. This reflects the Java concept “write once, run everywhere”. In the same way, Java applications developed for BS2000 are also executable on other platforms.
The range of functions corresponds to the relevant basic Java2 Standard Edition SDK of JavaSoft. This is ensured by Sun validation and thus acquires the right to use the “Java Compatible Logo” for BS2000.
JENV is normally used inside the POSIX environment (POSIX shell), but it can also be controlled from the BS2000 environment using procedures.
When installing JENV with POSIX, it must be noted that a relatively large quantity of storage space is required in the POSIX file system. If possible, this should be taken into account when the POSIX file system is designed. For information on the required sizes, see the release notice.
JENV is a delivery component of the BS2000 basic configuration and is executable on all hardware platforms. Special high-performance variants exist for non-/390 platforms. These are then only executable on the appropriate hardware.
For further information, see the appropriate manual and the release notice.