Connect to mysql remote database using JDBC?

I'm a java beginner and I'm working on a simple application which connects to a remote mysql database using JDBC. I've tested it locally and it works just fine, however I cannot get it to work on for my remote server. I don't think its of much use but heres the code:

Connection connection = null;
String dburl = "jdbc:mysql://314159265:3306/Db_Name";
String userName = "user";
String passWord = "password";

    try {
        Class.forName("com.mysql.jdbc.Driver");

        connection = DriverManager.getConnection(dburl, userName, passWord);
        Statement st = connection.createStatement();                                 

        String query = "INSERT INTO Example (`TestColumn`) VALUES('hello')";
        int rsI = st.executeUpdate(query);
        System.out.println("Hi");
        }catch (Exception e) {
        System.out.println(e);
    } finally {
        if (connection != null) {
            try {
                connection.close();
                System.out.println("Database connection terminated");
            } catch (Exception e) { /* ignore close errors */ }
        }
    }

When I run this, I get the following message:

com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago.The driver has not received any packets from the server.

I'm pretty sure it must be some kind of server configuration issue.

 Notes:
 Username, password, IP, database name, etc. are just examples.