getting NullPointerException, but not sure how or why

[jrthor2]

I have the below code, with System.out.println for debugging, and when the code runs, it is only getting to #2 of my System.out.println statements, then gets a NullPointerException on the line in bold (the finally clause). How can it be getting this nullpointer when it only got to #2 of my debugging statements? It didn't even try to make a connection to my database yet. Could someone help me work this out?

private static void compareNexgenData(String args[]) throws InstantiationException, IllegalAccessException, ClassNotFoundException, SQLException{
        Class.forName(databaseDriver).newInstance();
        
        String spreadsheetNexgenLastName = null;
        int spreadsheetCustomerNumber = 0;
        String spreadsheetNameMatch = null;
        String databaseNameValue = null;
        String databaseLastName = null;
        Connection connection = null;
        PreparedStatement preparedStatement = null;
        
        try {
            File file = new File(args[3]);
            System.out.println("1");
            InputStream inputStream = new FileInputStream(file);            
            System.out.println("2: " + file.toString());
            Workbook wb = WorkbookFactory.create(inputStream);
            System.out.println("3");
            Sheet sheet = wb.getSheetAt(0);     
            System.out.println("4");
                        
            connection = DriverManager.getConnection(databaseConnectionString, args[1], args[2]);
            System.out.println("5");
            preparedStatement = connection.prepareStatement("select VALUE from xxx where CUSTOMER_NBR = ? and ATTRIBUTE_CODE = 'NAME'");
            System.out.println("6");
            
            for (Row row : sheet) {
                System.out.println("7");
                Cell spreadsheetNameMatchCell = row.getCell(8);
                System.out.println("8");
                spreadsheetNameMatch = spreadsheetNameMatchCell.getRichStringCellValue().getString().toLowerCase().trim();
                System.out.println("spreadsheetNameMatch: " + spreadsheetNameMatch);
                
                if (spreadsheetNameMatch.contains("no")) {
                    Cell spreadsheetCustomerNumberCell = row.getCell(0);
                    spreadsheetCustomerNumber = Integer.valueOf(spreadsheetCustomerNumberCell.getRichStringCellValue().getString());
                    System.out.println("*****spreadsheetCustomerNumber: " + spreadsheetCustomerNumber + "*****");
                    
                    Cell spreadsheetNexgenLastNameCell = row.getCell(6);
                    spreadsheetNexgenLastName = spreadsheetNexgenLastNameCell.getRichStringCellValue().getString().toLowerCase().trim();
                    System.out.println("*****spreadsheetNexgenLastName: " + spreadsheetNexgenLastName + "*****");
                    
                    preparedStatement.setInt(1,spreadsheetCustomerNumber);
                    
                    ResultSet resultSet = preparedStatement.executeQuery();
                    
                    if (resultSet != null) {
                        while (resultSet.next()) {
                            databaseNameValue = resultSet.getString("VALUE").toLowerCase();
                            System.out.println("*****databaseValue: " + databaseNameValue + "*****");
                            
                            //get the last name from the returned database column value
                            if (databaseNameValue.indexOf("lastname") > 0) {
                                int lastNameStartIndex = databaseNameValue.lastIndexOf("lastname");
                                databaseLastName = databaseNameValue.substring(lastNameStartIndex + 9).toLowerCase().trim();                    
                            }
                            System.out.println("*****databaseLastName: " + databaseLastName + "*****");
                        }                        
                        //Compare databaseNameValue last name to spreadsheetLastName
                        if (spreadsheetNexgenLastName.equalsIgnoreCase(databaseLastName)) {
                            System.out.println("Customer Number " + spreadsheetCustomerNumber + ": Data entered matches Nexgen");
                            System.out.println("\n");
                            Cell newCell = row.getCell(9);
                            newCell.setCellValue("Data entered matches Nexgen");
                        } else {
                            System.out.println("Customer Number " + spreadsheetCustomerNumber + ": Data entered DOES NOT matches Nexgen");
                            System.out.println("\n");
                            Cell newCell = row.getCell(9);
                            newCell.setCellValue("Data entered DOES NOT matches Nexgen");
                        }                        
                    } else {
                        System.out.println("resultSet is null");
                    }    
                }                
            }
            inputStream.close();
            // Write the output to a file
            FileOutputStream fileOut = new FileOutputStream(file + ".new");
            wb.write(fileOut);
            fileOut.close();
        } catch (FileNotFoundException fnfe) {
            System.out.println("FileNotFoundException");
            fnfe.printStackTrace();
        } catch (SQLException sqle) {
            System.out.println("SQLException selecting row for customer number: " + spreadsheetCustomerNumber);
            sqle.printStackTrace();
        } catch (InvalidFormatException ife) {
            System.out.println("InvalidFormatException");
            ife.printStackTrace();
        } catch (IOException ioe) {
            System.out.println("IOException");
            ioe.printStackTrace();
        } finally {            
            connection.close();            
        }
    }

Thanks

[jrthor2]

I think i got this fixed. I was missing a .jar file in my project.