Question

This is the code I am working on:

if(connection.doDatabaseRead(findSQL))
  {
      ResultSet retRES = connection.getResultSet();

      int i = 0;

      // did we find anything
      while( retRES.next() )
      {        
          //read result from query
          suiteNum.add(retRES.getString(i)); // this is the problem 

          i++;

          //let other threads breathe
          Thread.yield();   
      }   
  }

suiteNum is a string vector

When I try to add the database results to the vector the code crashes with this error.

java.sql.SQLException: Column Index out of range, 0 > 1. 

I have the same piece of code working elsewhere in the program but I use real numbers like 0, 1 and 2 instead of i and it works fine.

As I do not know how many results the database request will have I need it to be dynamic but it will only work hard coded.
How can I make it work with i ?

Answer 1

The argument to getString is the column index, not the row index as you seem to think. The function returns the value of the given column in the current row, while next advances the cursor to the next row.

You probably mean:

suiteNum.add(retRES.getString(1));

in which case you can lose i altogether.