write the result into excelsheet

package reader;

import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.util.ArrayList; import java.util.Iterator; import java.util.List; import java.util.Vector;

import org.apache.poi.hssf.usermodel.HSSFCell; import org.apache.poi.hssf.usermodel.HSSFRow; import org.apache.poi.hssf.usermodel.HSSFSheet; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.poifs.filesystem.POIFSFileSystem; import org.apache.poi.ss.usermodel.Cell; import org.openqa.selenium.By; import org.openqa.selenium.WebDriver; import org.openqa.selenium.ie.InternetExplorerDriver;

public class ReadExcel { static String homeurl="http://192.168.5.19:79/Home.aspx";

public static void main( String [] args ) throws InterruptedException, IOException {

    String fileName="E:\\excellogin.xls";;
    //Read an Excel File and Store in a Vector
    Vector dataHolder=readExcelFile(fileName);
    //Print the data read
    printToConsole(dataHolder);

  //  writeDataToExcelFile(fileName);   
}
public static Vector readExcelFile(String fileName)

{

    /** --Define a Vector
        --Holds Vectors Of Cells
     */
    Vector cellVectorHolder = new Vector();
    List cellDataList = new ArrayList();

    try{
    /** Creating Input Stream**/
    //InputStream myInput= ReadExcelFile.class.getResourceAsStream( fileName );
    FileInputStream myInput = new FileInputStream(fileName);

    /** Create a POIFSFileSystem object**/
    POIFSFileSystem myFileSystem = new POIFSFileSystem(myInput);

    /** Create a workbook using the File System**/
     HSSFWorkbook myWorkBook = new HSSFWorkbook(myFileSystem);

     /** Get the first sheet from workbook**/
    HSSFSheet mySheet = myWorkBook.getSheetAt(0);

    /** We now need something to iterate through the cells.**/
      Iterator rowIter = mySheet.rowIterator();


      while(rowIter.hasNext()){
          HSSFRow myRow = (HSSFRow) rowIter.next();
          Iterator cellIter = myRow.cellIterator();
          Vector cellStoreVector=new Vector();
          while(cellIter.hasNext()){
              HSSFCell myCell = (HSSFCell) cellIter.next();
              cellStoreVector.addElement(myCell);
          }
          cellVectorHolder.addElement(cellStoreVector);
      }

    }catch (Exception e){e.printStackTrace(); }

    return cellVectorHolder;
}

private static void printToConsole(List cellDataList) throws InterruptedException, IOException

{

for (int i = 1; i < cellDataList.size()+1; i++)

{

List cellTempList = (List) cellDataList.get(i);

//System.out.print(cellTempList + "\t");
final String sUrl = "http://192.168.5.19:79/ExATLogin.aspx?";
 WebDriver d1 = new InternetExplorerDriver();
 d1.get(sUrl);
HSSFCell hssfCell1 = (HSSFCell) cellTempList.get(0);
String stringCellValue1 = hssfCell1.toString();
System.out.print("UserName:" + stringCellValue1 + "\t");

d1.findElement(By.id("txt_UserName")).clear();
d1.findElement(By.id("txt_UserName")).sendKeys(stringCellValue1);

HSSFCell hssfCell = (HSSFCell) cellTempList.get(1);
String stringCellValue = hssfCell.toString();
System.out.print("Password:" + stringCellValue + "\t");
d1.findElement(By.id("txt_Password")).clear();
 d1.findElement(By.id("txt_Password")).sendKeys(stringCellValue);
 Thread.sleep(3000);
 d1.findElement(By.name("btn_Login")).click();  


 String  curUrl=d1.getCurrentUrl();
 System.out.println("\n");
       System.out.println(curUrl);

    if(homeurl.equals(curUrl)){
   System.out.println("Login successful");

       }
   else
          System.out.println("Login not successful");

    Thread.sleep(3000); 

}

}

private static void write1() throws IOException{

  FileInputStream file = new FileInputStream(new File("E:\\excellogin.xls"));

    HSSFWorkbook workbook = new HSSFWorkbook(file);
    HSSFSheet sheet = workbook.getSheetAt(0);
    Cell cell = null;
    Cell cell1 = null;
    Cell cell2 = null;
   int row=1;
   for(;row<5;row++){
       cell=sheet.getRow(row).getCell(0);
       cell1=sheet.getRow(row).getCell(1);
       if(cell.equals("superadmin") && cell1.equals("Exdion")){
            cell2 = sheet.getRow(row).getCell(2);
            cell2.setCellValue(cell.getStringCellValue().concat("pass"));
           }
       else{
            cell2 = sheet.getRow(row).getCell(2);
            cell2.setCellValue(cell.getStringCellValue().concat("fail"));  
       }
       }


    file.close();

    FileOutputStream outFile =new FileOutputStream(new File("E:\\excellogin.xls"));
    workbook.write(outFile);
    outFile.close();

}

}

my question is i want to wite the result in to the same excel file....... please help me. if username is superadmin and password is Exdion. then the status is pass othewise fail.