You can create an RDC client with B4J in the same way as done with B4A:
Remote Database Connector - Connect to any remote DB
The slightly modified DBRequestManager is included in the example.
It also includes a new utility method named FillTableView which fills a TableView with the data retrieved from the server.
Note that this project depends on Agraham's ByteConverter library. This library is compatible with B4J.