Error in .jfindClass(as.character(driverClass)[1]) : class not found

Question

> cassdrv <- JDBC(\"org.apache.cassandra.cql.jdbc.CassandraDriver\",
+                 list.files(\"C://Users//VRavimurugan.GSIN//AppData//Roaming//RazorSQL//cassa         


        

Answer 1

As highlighted in this apparently related issue, a solution may be to remove the package, restart, and install it again.

In your case:

1. Restart R
2. In a clean session run the following command: remove.packages("RJDBC")
3. Restart R again
4. Re-install again the package with install.packages("RJDBC")

This should fix it. A similar procedure should work for other packages giving the same error message.