The JDBC driver version 5.x is compatible with Hazelcast version 5.x. For Hazelcast 4.2, use the JDBC Driver 4.2. The open source one isn't able to connect to Hazelcast EE clusters, but has an open ...
To use JavaDowngrader as a library in your application, check out the Usage (As a library) section. If you just want to downgrade .jar files you can check out the Usage (Standalone) section. To ...