With the Java 9 on the horizon it is time to get Qpid's Java components ready.
- make sure component compile with JDK9
- make sure components run with JRE9
The task of modularization of broker-j is excluded from this JIRA, as it seems, that many existing modules need to export the same packages which is not permitted by Jigsaw module system. Some classes need to be moved into separate packages which requires more substantial refactoring.