Re: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

[Ar 3,14]

the solution for me was, to check the connection url.
I`v fount two mistakes in that:
String url = "jdbc:mysql :// " + server + "/" + database;
The first one, the blank space after "mysql". It caused an : "No suitable driver found for jdbc:mysql :// ... " error,
and the second mistake was, another blank space, after "://". That caused the "com.mysql.jdbc.exceptions.jdbc4.CommunicationsException" error for me.
So, check the connection url, for unnecessary characters(blank spaces).
Helped to anybody ? :)