Jdbc ResultSet.next() problem

Question

this function is part of a class the extends AbstractTableModel
the line of code that is causing all the problems is right below lines that are indented all the way to the right and are in all caps
public void setAResultSet(ResultSet results)
try
ResultSetMetaData metadata =
results.getMetaData();
int columns = metadata.getColumnCount();
//now we know how many columns there are, so
//initialize the String array
columnNames = new String[columns];
//get the column names
for(int i = 0; i < columns; i++)
//remember - columns start with the indice at 1
columnNames[i] = metadata.getColumnLabel(i+1);
//get all the rows
dataRows = new Vector();
//will store the whole row of data
String[] oneRow;
while(results.next());
//re-allocate memory each time, b/c its a whole
//new row of data
oneRow = new String[columns];
//get the data in the current row, from every
//column
for(int i = 0; i < columns; i++)
{   System.err.println("Indice: " + i);
PROBLEM ON LINE BELOW
EXCEPTION STATES "INVALID CURSOR STATE"
oneRow[i] = results.getString(i+1);
//all of the data is collected, so store
dataRows.addElement(oneRow);
fireTableChanged(null);
catch(SQLException sqle)
System.err.println("Error in ResultsModel.setResultSet()");
System.err.println(sqle.getMessage());
Anyone has an idea as to why the SQLException is being thrown? Why is the cursor state invalid???

Answer 1

Hmmmm, try setting the cursor to the first row in the
result set just before you wish to get the data. That led to some interesting results. Here's what I added:
while(results.next());
//re-allocate memory each time, b/c its a whole
//new row of data
oneRow = new String[columns];
boolean texe = results.first();
THE REST IS THE SAME AS BEFORE
This also threw a SQLException, with the message: "Result set type is TYPE_FORWARD_ONLY"
That's very interesting b/c I know that its doing this from iteration 1. I know this because I have an err.println() message in the for loop that's nested in the while loop. That message, which tells me what i equals, did NOT show up. So, going to the first column somehow went backwards causing an error (but I've never had a problem using previous() or any other "backwards" methods for ResultSet objects before!). And where the cursor so going to first() is backwards? Whoever can figure this out deserves Duke Dollars.