Errors that occur with Mysql-connector-java

If you're using the mysql-connector-java6.* version, because you're using MAVEN to build a project recently, try to replace it with the latest version, which is a mysql-connector-java6 version. A warning warning message was found (this does not belong to an error, but looks uncomfortable):

can be used but it is recommended to use "Com.mysql.cj.jdbc.Driver" as the new driver name

However, with the use of C3P0 connection pool when there is an error, first look at the error message:

I use C3P0 version is 0.9.5.2, currently I have not found the updated version, this version of the use of mysql-connector-java6.* will appear this error, do not know how to solve, may be c3p0 not supported, Finally, I'll change back to the mysql-connector-java5.* version.

Errors that occur with Mysql-connector-java