firstly describe the column name in a table using
describe <tablename>
Mysql does not accept short name and spaces between a
word like 'First name'. In fact every database should accept a word without any space.
after getting the column name, u can use that particular column name. or u can use integer value which specifies its position in a column.
e.g if first column is First_Name then u can retrieve value using rs.getString(1);
if it does not help u then post again.