Trouble connect MySql database on cluster

Question

Dear Friends
I am trying to connect the MySql database on our cluster which have ROCKS cluster ebvironment on it. My code is just a test code to connect to the "test" database and i got fallowing exception
Exception: Data source rejected establishment of connection, message from server: "Host 'chemdynm.chem.ttu.edu' is not allowed to connect to this MySQL server"
Can anybody help me on this problem.My test code is as fallows
Thanks
Nav
import java.sql.*;
public class dbtest
     public static void main(String[] args)
     Connection con = null;
try {
Class.forName("com.mysql.jdbc.Driver").newInstance();
con = DriverManager.getConnection("jdbc:mysql://chemdynm.chem.ttu.edu/test",
"root", "secret");
if(!con.isClosed())
System.out.println("Successfully connected to " +
"MySQL server using TCP/IP...");
} catch(Exception e) {
System.err.println("Exception: " + e.getMessage());
} finally {
try {
if(con != null)
con.close();
} catch(SQLException e) {
          System.out.println("here is the problem " +e);

Answer 1

Read the MySQL documentation about how to set up permissions. Not only do you have to declare permissions for each user ID, you also have to declare permissions for the hosts they may connect from. This is nothing to do with Java or JDBC.