CALL ml_add_java_connection_script(
    'ver1',
    'modify_user',
    'ExamplePackage.ExampleClass.modifyUser'
)

public String modifyUser(InOutString io_user_name) throws SQLException {
    Statement uid_select = curConn.createStatement();
    ResultSet uid_result = uid_select.executeQuery(
        "SELECT rep_id FROM SalesRep WHERE name = '"
            + io_user_name.getValue() + "' "
    );
    uid_result.next();
    io_user_name.setValue(java.lang.Integer.toString(uid_result.getInt(1));
    uid_result.close();
    uid_select.close();
    return (null);
}