Unable to write into excel sheet however no error is thrown

Hi Ashish/ Guys,

I have a requirement where i need to update specific rows of excel sheet only. I have created below function for writing back into excel sheet. Interesting part is code runs without any error but its not writing inside excel. Can anyone please let me know what I am doing wrong. Please note that i am using XLS_Reader file for interacting with excels designed by Ashish.

Appreaciate your help.

Thanks
Ahmed
//************************Code****************************

public void setData(String TestName, String application, String browser, String emailId ){
init();// initialize the Property file
Xls_Reader xls = new Xls_Reader(System.getProperty("user.dir")+"\\src\\com\\Digicomm\\datatables\\"+application+".xlsx");

int rows = xls.getRowCount("Data");
System.out.println("There are "+rows+" rows");

//Calculating row number for test case
int TestRowNum;
for(TestRowNum= 1; TestRowNum<= rows; TestRowNum++){
String TestNameXls = xls.getCellData(Constants.DATA_SHEET, 0, TestRowNum);//Constants.DATA_SHEET=data
if(TestNameXls.equalsIgnoreCase(TestName))
break;
}
System.out.println("Test starts from row number "+TestRowNum);

int colStartRowNum = TestRowNum +1;
int dataStartRowNum = TestRowNum +2;

//Number of data rows
int testrows =1;
while((!xls.getCellData(Constants.DATA_SHEET, 0, dataStartRowNum+testrows).equals(""))){
testrows++;
}
System.out.println("Total rows of data are "+testrows);

//Number of data cols
int testcols = 0;
while(!(xls.getCellData(Constants.DATA_SHEET, testcols, colStartRowNum)).equals("")){
testcols++;
}
System.out.println("Total cols of data are "+testcols);

for(int j=0;j<testcols;j++){
String CellData = xls.getCellData(Constants.DATA_SHEET, j, colStartRowNum);
System.out.println(CellData);
if(CellData.equalsIgnoreCase("Email")&& browser.equalsIgnoreCase("IE"))
xls.setCellData(Constants.DATA_SHEET, Constants.EMAIL_COL, dataStartRowNum, emailId);
else if (CellData.equalsIgnoreCase("Email")&& browser.equalsIgnoreCase("Chrome"))
xls.setCellData(Constants.DATA_SHEET, Constants.EMAIL_COL, dataStartRowNum +1,emailId);
else if(CellData.equalsIgnoreCase("Email")&& browser.equalsIgnoreCase("Mozilla"))
xls.setCellData(Constants.DATA_SHEET, Constants.EMAIL_COL, dataStartRowNum+2,emailId);
}

}
//*************************End of Code****************************