There are a lot things that could trigger an error. You could have use *
resp.getWriter().println(e.getMessage());* instead of *
resp.getWriter().println("SQLException, world");* * *to see the actual
error. A few things below might trigger an error.
1. DriverManager.getConnection("jdbc:google:rdbms://----------/guestbook");.
the --------- should be a valid cloud sql instance name. This could be
*Example:db1.
*where *Example* is the name of your cloud sql account and *db1* is the
name of your instance. On local host this is not required.
2. You must add the app id of this application to the authorized ids of
your cloud sql instance.
3. You must create a database guestbook in your instance and of course a
table called entries.
i hope this will help.
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