simple-jdbc-server
· An interface over JDBC providing interoperability with non-JVM languages and a simplified programming model targeting data transformation use-cases
Download JD-GUI to open JAR file and explore Java source code file (.class .java)
Click menu "File → Open File..." or just drag-and-drop the JAR file in the JD-GUI window simple-jdbc-server-0.0.7.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.