Provide the ability for the Java JZOS libraries to listen ENF48 system events.

Overview:
Provide the ability for the Java JZOS libraries to listen ENF48 system events.

Current Status:
Java support team stated that the JZOS API does not have any class for listening for z/OS system events from java code.

Issue:
Customer's application is written in Java, because it is running on IBM Integration Bus (IIB) Java Compute Nodes. It doesn’t issue IXGCONN macro directly, but the macro is issued through JZOS library, ZLogstream class.
When customer’s application issue IXGLOGER API, the API will success, but logger resources may be temporarily unavailable. For example, customer issue IXGBRWSE to read the log from log stream in CF Structure, but the structure is in rebuild at that time. In that case, IxgRsnCodeRebuildInProgress is returned for IXGBRWSE API.
We discussed this situation with IXGLOGER support team and were suggested to handle ENF 48 system event.
But, ZLogStream class does not have any support to work with customer code that listens for the ENF48 system event. So, customer code is not able to change the behaviour of the ZLogStream class by handling the ENF48 system event.
Currently, since Java cannot listen for ENF48 events, the application must wait a certain amount of time and retry. This can be a very wasteful waste of time. If Java can listen for events, it can retry at the appropriate time.

Solution:
It would solve this problem that providing a new class or method in the Java JZOS Zlogstream class library that handles ENF48 system events.

Benefits/effects:
If JZOS API has a capability to handles ENF48 system events, customer code could improve to handle