Updating an MS SQL table producing errors

Question

I'm encountering a strange problem.
I'm writing a Java application that updates the data in every row for a particular column in a table of a MS SQL Server database. There are about 9000 rows in these tables.
Each time I run the application, it would update the first hundred rows, and then the program would catch an error "String index out of range".
The strange thing is that I have about 9 tables, and each of them have that many or more rows, and every one of them update without any problem, so I know that there isn't any problem with the code that's generating the new data to be updated.
To troubleshoot this problem, I've reduced the application to be as simple as possible, but I still have the same problem. I've looked at the database, and the row where it stops doesn't seem to be any different from the rest.
Here's my simplified code:
String tableStr = "Table1";         ResultSet table;         int newData = 1000000;         int DataCol = 29;         try{             Statement stmt;             String sql = "select * from dbo."+tableStr;             String tempData;             stmt = Conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);             table = stmt.executeQuery(sql);             System.out.println("Table dbo."+tableStr+" populated");             while(table.next()){                 tempData = DataGen(newData,false,true);                 table.updateString(DataCol, tempData);                 table.updateRow();                 System.out.println(table.getRow()+" "+tempData);                 newData++;             }         }         catch (Exception e){             System.err.println(e.getMessage());         }
The error caught (Exception e) is "String index out of range: -10872"
What is the possible reason that is causing this?

Answer 1

To be honest, I never knew that function existed... Thanks for the tip. The error still doesn't help though. I changed the function to do nothing but write a string to the function, but now I got this instead. Appears to be either a problem with the server or the driver.
java.sql.SQLException: TDS Protocol error: Invalid packet type 0x0
        at net.sourceforge.jtds.jdbc.TdsCore.nextToken(TdsCore.java:2314)
        at net.sourceforge.jtds.jdbc.TdsCore.getNextRow(TdsCore.java:764)
        at net.sourceforge.jtds.jdbc.MSCursorResultSet.processOutput(MSCursorResultSet.java:959)
        at net.sourceforge.jtds.jdbc.MSCursorResultSet.cursorFetch(MSCursorResultSet.java:719)
        at net.sourceforge.jtds.jdbc.MSCursorResultSet.next(MSCursorResultSet.java:1137)I've tried a work around but I still don't know what may be causing it. Because I know if always stops at the 100th row, I got it to do 50 rows at a time and close and re-populate the resultset each time and now it works.
Thanks!