Java file won't connect to DB

Hi, when run the follwoing java file it doesn't update the database as desired... here's the code.........

import java.io.*;
import java.text.*;
import java.sql.*;
import java.util.*;

public class work {

 public static void main (String[] args) {


Connection con = null;
   
   
      try
    {
System.out.println("tries to connect");

      Class.forName("org.gjt.mm.mysql.Driver").newInstance();
     
      System.out.println("connected");

      con = DriverManager.getConnection("jdbc:mysql://localhost/traffic");
      Statement statement = con.createStatement();
System.out.println("connected");

 statement.executeUpdate("insert into x   values   ( 'ghjgjh')");


 
      }

    catch (Exception e)
    {
    e.toString();
    }
    finally
    {
      try
      {
        if (con != null)
          con.close();  //try to close the db connection
      }
      catch (SQLException sqle)
      {
       sqle.toString();
      }
    }

}


}



I get the ouput "tires to connect" but I don't get the output "connected so obviusly it's having a problem with the connection code. Btw when I use the same code in a servlet it worls perfectly. Any idea why it won't work as a normal java file?