class MySQLDriver implements SQLDriver {

    public MySQLDriver() {
        try {
            Class.forName("com.mysql.jdbc.Driver");
        } catch (ClassNotFoundException ex) {
            Logger.getLogger(MySQLDriver.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    @Override
    public Connection getConnection(String connectionUrl, String username, String passwd) throws SQLException {
        return DriverManager.getConnection(connectionUrl, username, passwd);
    }

    @Override
    public String getPrefix() {
        return "mysql";
    }

    @Override
    public String toString() {
        return "MySQL";
    }

    @Override
    public boolean equals(Object obj) {<FILL_FUNCTION_BODY>}

    @Override
    public int hashCode() {
        return getPrefix().hashCode();
    }
}

        if (obj instanceof MySQLDriver) {
            return ((MySQLDriver) obj).getPrefix().equals(getPrefix());
        } else {
            return false;
        }
    
<no_super_class>