public class MySQL {

    private static Connection connection;

    public static Connection getConnection() throws SQLException {
        if (connection != null) if (connection.isValid(1)) return connection; else connection.close();

        try {
            Class.forName("com.mysql.jdbc.Driver");
        } catch (ClassNotFoundException ex) {
            ex.printStackTrace();
        }
        connection = DriverManager.getConnection("jdbc:mysql://<db server ip>:3306/<db name>", "<user>", "<pass>");

        return connection;
    }

}