Printing with 1 additional column every time resultSet is given

Question

I have a resultSet that will return an extra column everytime around. I want to my Printing loop(code below) to be able to print an extra column everytime the resultSet is brought back with new data. How can this be done?
do{     
               String column1 = rs.getString(1);
               String column2 = rs.getString(2);
          System.out.println (column1 + column2);
}while (rs.next());

Answer 1

It's weird that the number of columns would grow each time you run it. It sounds like you have an oddly-arranged schema.
Anyway, what you want is the java.sql.ResultSetMetaData. Read the API docs about it. It'll tell you how many columns there are, what types they are, etc., so you can then change what you read from the results. You'll probably end up with a new nested loop inside the existing one, rather than hardcoding as you have now.