So, if you want to read huge number of test data from the excel sheet to feed to the application then we need to know how many rows and columns are there in the excel. If you know exact information about the test data then only we can get the information from the excel in proper way. For this we need to use some third party API which are available. In those one of the famous is Apache POI. In this blog we will use Apache POI to  get the row count and column count from the excel sheet. To interact with the excel, Apache POI given so many classes to interact with the excel and read and write the data. To read/write excel data we will use Java and Apache POI classes.

Below are the classes will use to read/write the data:

1. FileInputStream – A FileInputStream is an inputstream for reading data from a File.
2. XSSFWorkbook
3. XSSFSheet
4. XSSFRow
5. XSSFCell

Below are the methods will use to read/write the data which are available in the above classes:

1. getSheet(“sheetName”) – Get sheet with the given name
2. getLastCellNum() – Get the index of the last cell contained in the row Plus one as index starts from ZERO
3. getLastRowNum()

Below is the sample Excel File:

We can download the Apache POI Jar files from this link and can find the screenshots below for the same.

Points to Remember:

1. Row index starts from ZERO
2. Column index starts from ZERO
3. Extension of excel file is ‘.xlsx’ from Excel 2007

Now we will write a sample stand alone program that will give row count and column count from the excel:

import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import java.io.FileInputStream;

public class ExcelRowAndColumnCount
{
   public static void main(String args[]) throws Exception
   {
       FileInputStream fis = new FileInputStream("/Volumes/Krishna/Jar Files/poi-3.16-beta1/TestData.xlsx");
       XSSFWorkbook workbook = new XSSFWorkbook(fis);
       XSSFSheet sheet = workbook.getSheet("Sheet");
       XSSFRow row = sheet.getRow(0);
       int colNum = row.getLastCellNum();
       System.out.println("Total Number of Columns in the excel is : "+colNum);
       int rowNum = sheet.getLastRowNum()+1;
       System.out.println("Total Number of Rows in the excel is : "+rowNum);
   }
}

In the above program we have hard-coded the row number and sheet name in the program. But for the best practice we will create a util method and will call that method where ever we need. For this we will write 2 classes, one will have the actual logic to get the row count and column count from the excel and another class will call this method.




Below is the excel read/write data util class. In this we will write a method called “getRowCount()” and “getColumnCount()” both will accept single parameter called sheetName from the excel sheet.

import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import java.io.FileInputStream;

public class ExcelApiTest
{
   public FileInputStream fis = null;
   public XSSFWorkbook workbook = null;
   public XSSFSheet sheet = null;
   public XSSFRow row = null;
   public XSSFCell cell = null;
   String xlFilePath;

   public ExcelApiTest(String xlFilePath) throws Exception
   {
       this.xlFilePath = xlFilePath;
       fis = new FileInputStream(xlFilePath);
       workbook = new XSSFWorkbook(fis);
       fis.close();
   }

   public int getRowCount(String sheetName)
   {
       sheet = workbook.getSheet(sheetName);
       int rowCount = sheet.getLastRowNum()+1;
       return rowCount;
   }

   public int getColumnCount(String sheetName)
   {
       sheet = workbook.getSheet(sheetName);
       row = sheet.getRow(0);
       int colCount = row.getLastCellNum();
       return colCount;
   }
}

Below is a sample program which will call the methods from the above program to get the column number and row number from any excel sheet.

public class RowColumnCountFromExcelUsingUtilClass
{
   public static void main(String[] args) throws Exception
   {
       ExcelApiTest eat = new ExcelApiTest("/Volumes/Krishna/Jar Files/poi-3.16-beta1/TestData.xlsx");
       int colCount = eat.getColumnCount("Credentials");
       System.out.println("Total Columns in the Excel : "+colCount);
       int rowCount = eat.getRowCount("Credentials");
       System.out.println("Total Rows in the Excel : "+rowCount);
   }
}

This way we will read or get the row count and column count from the excel sheet.

Please watch youtube video for better and more understanding.

The post Row Count And Column Count in Excel appeared first on Selenium Webdriver Appium Complete Tutorial.

So, if you want to write data to excel; we need to use some third party API which are available. In those one of the famous is Apache POI. In this blog we will use Apache POI to write the data to the excel sheet. To interact with the excel, Apache POI given so many classes to interact with the excel and read and write the data. To read/write excel data we will use Java and Apache POI classes.

Below are the classes will use to read/write the data:

1. FileInputStream – A FileInputStream is an inputstream for reading data from a File.
2. FileOutputStream – A FileOutputStream is an outputstream for writing data to a File.
3. XSSFWorkbook
4. XSSFSheet
5. XSSFRow
6. XSSFCell
7. XSSFFont
8. XSSFCellStyle

Below are the methods will use to read/write the data which are available in the above classes:

1. getSheet(“sheetName”) – Get sheet with the given name
2. getLastCellNum() – Get the index of the last cell contained in the row Plus one as index starts from ZERO
3. setCellValue() – Set the value of the cell
4. getRow(int) – Returns the row.
5. getCell(int) – Get the cell representing a given column

Below is the sample Excel File:

We can download the Apache POI Jar files from this link and can find the screenshots below for the same.

Points to Remember:

1. Row index starts from ZERO
2. Column index starts from ZERO
3. Extension of excel file is ‘.xlsx’ from Excel 2007

Now we will write a sample stand alone program that will write the data to the excel:

import org.apache.poi.hssf.util.HSSFColor;
import org.apache.poi.ss.usermodel.FillPatternType;
import org.apache.poi.xssf.usermodel.*;
import java.io.FileInputStream;
import java.io.FileOutputStream;

public class WriteDataToExcel
{
    public static void main(String args[]) throws Exception
    {
        FileInputStream fis = new FileInputStream("/Volumes/Krishna/Jar Files/poi-3.16-beta1/TestData.xlsx");
        FileOutputStream fos = null;
        XSSFWorkbook workbook = new XSSFWorkbook(fis);
        XSSFSheet sheet = workbook.getSheet("Credentials");
        XSSFRow row = null;
        XSSFCell cell = null;
        XSSFFont font = workbook.createFont();
        XSSFCellStyle style = workbook.createCellStyle();

        int col_Num = -1;
        row = sheet.getRow(0);
        for(int i = 0; i < row.getLastCellNum(); i++)
        {
            if(row.getCell(i).getStringCellValue().trim().equals("Result"))
            {
                col_Num = i;
            }
        }

        row = sheet.getRow(1);
        if(row == null)
            row = sheet.createRow(1);

        cell = row.getCell(col_Num);
        if(cell == null)
            cell = row.createCell(col_Num);

        font.setFontName("Comic Sans MS");
        font.setFontHeight(14.0);
        font.setBold(true);
        font.setColor(HSSFColor.WHITE.index);

        style.setFont(font);
        style.setFillForegroundColor(HSSFColor.GREEN.index);
        style.setFillPattern(FillPatternType.SOLID_FOREGROUND);

        cell.setCellStyle(style);
        cell.setCellValue("PASS");

        fos = new FileOutputStream("/Volumes/Krishna/Jar Files/poi-3.16-beta1/TestData.xlsx");
        workbook.write(fos);
        fos.close();
    }
}

In the above program we have hard-coded the row number and column names in the program. But for the best practice we will create a util method and will call that method where ever we need. For this we will write 2 classes, one will have the actual logic to read/write the excel data and another class will call this method.




Below is the excel read/write data util class. In this we will write a method called “setCellData()” and it will accept 4 parameters called sheetName, columnName, rowNumber and value which is written to the excel.

import org.apache.poi.ss.usermodel.CellType;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import java.io.FileInputStream;
import java.io.FileOutputStream;

public class ExcelApiTest
{
    public FileInputStream fis = null;
    public FileOutputStream fos = null;
    public XSSFWorkbook workbook = null;
    public XSSFSheet sheet = null;
    public XSSFRow row = null;
    public XSSFCell cell = null;
    String xlFilePath;

    public ExcelApiTest(String xlFilePath) throws Exception
    {
        this.xlFilePath = xlFilePath;
        fis = new FileInputStream(xlFilePath);
        workbook = new XSSFWorkbook(fis);
        fis.close();
    }

    public boolean setCellData(String sheetName, String colName, int rowNum, String value)
    {
        try
        {
            int col_Num = -1;
            sheet = workbook.getSheet(sheetName);

            row = sheet.getRow(0);
            for (int i = 0; i < row.getLastCellNum(); i++) {
                if (row.getCell(i).getStringCellValue().trim().equals(colName))
                {
                    col_Num = i;
                }
            }

            sheet.autoSizeColumn(col_Num);
            row = sheet.getRow(rowNum - 1);
            if(row==null)
                row = sheet.createRow(rowNum - 1);

            cell = row.getCell(col_Num);
            if(cell == null)
                cell = row.createCell(col_Num);

            cell.setCellValue(value);

            fos = new FileOutputStream(xlFilePath);
            workbook.write(fos);
            fos.close();
        }
        catch (Exception ex)
        {
            ex.printStackTrace();
            return  false;
        }
        return true;
    }
}

Below is a sample program which will call the method from the above program to write data to excel using column number:

public class WriteDataToExcelUsingUtilClass
{
    public static void main(String args[]) throws Exception
    {
        ExcelApiTest eat = new ExcelApiTest("/Volumes/Krishna/Jar Files/poi-3.16-beta1/TestData.xlsx");
        eat.setCellData("Credentials","Result",2,"PASS");
    }
}

This way we will write data to the excel using column number.

Please watch youtube video for better and more understanding.

The post Write Data To Excel Using Column Name appeared first on Selenium Webdriver Appium Complete Tutorial.

Write data to excel using column number will discuss about how we can write test data/test results to the excel sheet while automating any application using selenium web driver. We might get doubt that why we need to put the test results in excel. If an application need so much of data to be feed to test; then we will manage those data using external sources like text file, XML file and excel file etc… . Among these; Excel is very user friendly that we can organize the data very easily and we can read and write the data how we want. So, we mostly use excel to maintain the test data and results. In order to create a data driven framework then it is easy with using excel.

So, if you want to write data to excel; we need to use some third party API which are available. In those one of the famous is Apache POI. In this blog we will use Apache POI to write the data to the excel sheet. To interact with the excel, Apache POI given so many classes to interact with the excel and read and write the data. To read/write excel data we will use Java and Apache POI classes.

Below are the classes will use to read/write the data:

1. FileInputStream – A FileInputStream is an inputstream for reading data from a File.
2. FileOutputStream – A FileOutputStream is an outputstream for writing data to a File.
3. XSSFWorkbook
4. XSSFSheet
5. XSSFRow
6. XSSFCell
7. XSSFFont
8. XSSFCellStyle

Below are the methods will use to read/write the data which are available in the above classes:

1. getSheet(“sheetName”) – Get sheet with the given name
2. getLastCellNum() – Get the index of the last cell contained in the row Plus one as index starts from ZERO
3. setCellValue() – Set the value of the cell
4. getRow(int) – Returns the row.
5. getCell(int) – Get the cell representing a given column

Below is the sample Excel File:

We can download the Apache POI Jar files from this link and can find the screenshots below for the same.

Points to Remember:

1. Row index starts from ZERO
2. Column index starts from ZERO
3. Extension of excel file is ‘.xlsx’ from Excel 2007

Now we will write a sample stand alone program that will write the data to the excel:

import org.apache.poi.hssf.util.HSSFColor;
import org.apache.poi.ss.usermodel.FillPatternType;
import org.apache.poi.xssf.usermodel.*;
import java.io.FileInputStream;
import java.io.FileOutputStream;

public class WriteDataToExcel
{
    public static void main(String args[]) throws Exception
    {
        FileInputStream fis = new FileInputStream("/Volumes/Krishna/Jar Files/poi-3.16-beta1/TestData.xlsx");
        FileOutputStream fos = null;
        XSSFWorkbook workbook = new XSSFWorkbook(fis);
        XSSFSheet sheet = workbook.getSheet("Credentials");
        XSSFRow row = null;
        XSSFCell cell = null;
        XSSFFont font = workbook.createFont();
        XSSFCellStyle style = workbook.createCellStyle();

        row = sheet.getRow(1);
        if(row == null)
            row = sheet.createRow(1);

        cell = row.getCell(4);
        if(cell == null)
            cell = row.createCell(4);

        font.setFontName("Comic Sans MS");
        font.setFontHeight(14.0);
        font.setBold(true);
        font.setColor(HSSFColor.WHITE.index);

        style.setFont(font);
        style.setFillForegroundColor(HSSFColor.GREEN.index);
        style.setFillPattern(FillPatternType.SOLID_FOREGROUND);

        cell.setCellStyle(style);
        cell.setCellValue("PASS");

        fos = new FileOutputStream("/Volumes/Krishna/Jar Files/poi-3.16-beta1/TestData.xlsx");
        workbook.write(fos);
        fos.close();
    }
}

In the above program we have hard-coded the row and column numbers in the program. But for the best practice we will create a util method and will call that method where ever we need. For this we will write 2 classes, one will have the actual logic to read/write the excel data and another class will call this method.




Below is the excel read/write data util class. In this we will write a method called “setCellData()” and it will accept 4 parameters called sheetName, columnNumber, rowNumber and value which is written to the excel.

import org.apache.poi.ss.usermodel.CellType;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import java.io.FileInputStream;
import java.io.FileOutputStream;

public class ExcelApiTest
{
    public FileInputStream fis = null;
    public FileOutputStream fos = null;
    public XSSFWorkbook workbook = null;
    public XSSFSheet sheet = null;
    public XSSFRow row = null;
    public XSSFCell cell = null;
    String xlFilePath;

    public ExcelApiTest(String xlFilePath) throws Exception
    {
        this.xlFilePath = xlFilePath;
        fis = new FileInputStream(xlFilePath);
        workbook = new XSSFWorkbook(fis);
        fis.close();
    }

    public boolean setCellData(String sheetName, int colNumber, int rowNum, String value)
    {
        try
        {
            sheet = workbook.getSheet(sheetName);
            row = sheet.getRow(rowNum);
            if(row==null)
                row = sheet.createRow(rowNum);

            cell = row.getCell(colNumber);
            if(cell == null)
                cell = row.createCell(colNumber);

            cell.setCellValue(value);

            fos = new FileOutputStream(xlFilePath);
            workbook.write(fos);
            fos.close();
        }
        catch (Exception ex)
        {
            ex.printStackTrace();
            return  false;
        }
        return true;
    }
}

Below is a sample program which will call the method from the above program to write data to excel using column number:

public class WriteDataToExcelUsingUtilClass
{
    public static void main(String args[]) throws Exception
    {
        ExcelApiTest eat = new ExcelApiTest("/Volumes/Krishna/Jar Files/poi-3.16-beta1/TestData.xlsx");
        eat.setCellData("Credentials",4,1,"PASS");
    }
}

This way we will write data to the excel using column number.

Please watch youtube video for better and more understanding.

The post Write Data To Excel Using Column Number appeared first on Selenium Webdriver Appium Complete Tutorial.

So, if you want to read data from excel; we need to use some third party API which are available. In those one of the famous is Apache POI. In this blog we will use Apache POI to read the data from the excel sheet. To interact with the excel, Apache POI given so many classes to interact with the excel and get the data. To read excel data we will use Java and Apache POI classes.

Below are the classes will use to read the data:

1. FileInputStream – A FileInputStream is an inputstream for reading data from a File.
2. XSSFWorkbook
3. XSSFSheet
4. XSSFRow
5. XSSFCell

Below are the methods will use to read the data which are available in the above classes:

1. getSheet(“sheetName”) – Get sheet with the given name
2. getLastCellNum() – Get the index of the last cell contained in the row Plus one as index starts from ZERO
3. getStringCellValue() – Get the value of the cell as a String
4. getRow(int) – Returns the row.
5. getCell(int) – Get the cell representing a given column
6. getNumericCellValue() – Get the value of the cell as a number.
7. getDateCellValue() – Get the value of the cell as a date.
8. getBooleanCellValue() – Get the value of the cell as a boolean.

Below is the sample Excel File:

We can download the Apache POI Jar files from this link and can find the screenshots below for the same.

Points to Remember:

1. Row index starts from ZERO
2. Column index starts from ZERO
3. Extension of excel file is ‘.xlsx’ from Excel 2007
4. If you want to read integer value then you have to use “‘”(i.e. apostrophe) value in front of that value.[Example : 10 → ‘10]
5. We need to use different kind of methods to read String, Integer and Date values from the excel.

Now we will write a sample stand alone program that will read the data from the excel:

import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import java.io.FileInputStream;

public class ReadExcelData
{
    public static void main(String args[]) throws Exception
    {
        FileInputStream fis = new FileInputStream("/Volumes/Krishna/Jar Files/poi-3.16-beta1/TestData.xlsx");
        XSSFWorkbook workbook = new XSSFWorkbook(fis);
        XSSFSheet sheet = workbook.getSheet("Credentials");
        XSSFRow row = sheet.getRow(0);

        int col_num = -1;

        for(int i=0; i < row.getLastCellNum(); i++)
        {
            if(row.getCell(i).getStringCellValue().trim().equals("UserName"))
                col_num = i;
        }

        row = sheet.getRow(1);
        XSSFCell cell = row.getCell(col_num);

        String value = cell.getStringCellValue();
        System.out.println("Value of the Excel Cell is - "+ value);
    }
}

In the above program we have hard-coded the row and column numbers in the program. But for the best practice we will create a util method and will call that method where ever we need. For this we will write 2 classes, one will have the actual logic to read the excel data and another class will call this method.

Below is the excel read data util class. In this we will write a method called “getCellData()” and it will accept 3 parameters called sheetName, columnName and rowNumber.

import org.apache.poi.hssf.usermodel.HSSFDateUtil;
import org.apache.poi.ss.usermodel.CellType;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import java.io.FileInputStream;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;

public class ExcelApiTest
{
    public FileInputStream fis = null;
    public XSSFWorkbook workbook = null;
    public XSSFSheet sheet = null;
    public XSSFRow row = null;
    public XSSFCell cell = null;

    public ExcelApiTest(String xlFilePath) throws Exception
    {
        fis = new FileInputStream(xlFilePath);
        workbook = new XSSFWorkbook(fis);
        fis.close();
    }

    public String getCellData(String sheetName, String colName, int rowNum)
    {
        try
        {
            int col_Num = -1;
            sheet = workbook.getSheet(sheetName);
            row = sheet.getRow(0);
            for(int i = 0; i < row.getLastCellNum(); i++)
            {
                if(row.getCell(i).getStringCellValue().trim().equals(colName.trim()))
                    col_Num = i;
            }

            row = sheet.getRow(rowNum - 1);
            cell = row.getCell(col_Num);

            if(cell.getCellTypeEnum() == CellType.STRING)
                return cell.getStringCellValue();
            else if(cell.getCellTypeEnum() == CellType.NUMERIC || cell.getCellTypeEnum() == CellType.FORMULA)
            {
                String cellValue = String.valueOf(cell.getNumericCellValue());
                if(HSSFDateUtil.isCellDateFormatted(cell))
                {
                    DateFormat df = new SimpleDateFormat("dd/MM/yy");
                    Date date = cell.getDateCellValue();
                    cellValue = df.format(date);
                }
                return cellValue;
            }else if(cell.getCellTypeEnum() == CellType.BLANK)
                return "";
            else
                return String.valueOf(cell.getBooleanCellValue());
        }
        catch(Exception e)
        {
            e.printStackTrace();
            return "row "+rowNum+" or column "+colNum +" does not exist  in Excel";
        }
    }
}

Below is a sample which will call the method from the above program to read the excel data using column number:

public class ReadExcelDataUsingUtilClass
{
    public static void main(String args[]) throws Exception
    {
        ExcelApiTest eat = new ExcelApiTest("/Volumes/Krishna/Jar Files/poi-3.16-beta1/TestData.xlsx");        
        System.out.println(eat.getCellData("Credentials","UserName",2));
        System.out.println(eat.getCellData("Credentials","PassWord",2));
        System.out.println(eat.getCellData("Credentials","DateCreated",2));
        System.out.println(eat.getCellData("Credentials","NoOfAttempts",2));
    }
}

This way we will read the excel data using column name.

Please watch youtube video for better and more understanding.

The post Read Data From Excel Using Column Name appeared first on Selenium Webdriver Appium Complete Tutorial.

Read data from excel using column number will discuss about how we can read test data from the excel sheet while automating any application using selenium webdriver. We might get doubt that why we need to put the test data in excel and why to read data from that. If an application need so much of data to be feed to test; then we will manage those data using external sources like text file, xml file and excel file etc… . Among these; Excel is very user friendly that we can organize the data very easily and we can read the data how we want. So, we mostly use excel to maintain the test data. In order to create a data driven framework then it is easy with using excel.

So, if you want to read data from excel; we need to use some third party API which are available. In those one of the famous is Apache POI. In this blog we will use Apache POI to read the data from the excel sheet. To interact with the excel, Apache POI given so many classes to interact with the excel and get the data. To read excel data we will use Java and Apache POI classes.

Below are the classes will use to read the data:

1. FileInputStream – A FileInputStream is an inputstream for reading data from a File.
2. XSSFWorkbook
3. XSSFSheet
4. XSSFRow
5. XSSFCell

Below are the methods will use to read the data which are available in the above classes:

1. getSheet(“sheetName”) – Get sheet with the given name
2. getLastCellNum() – Get the index of the last cell contained in the row Plus one as index starts from ZERO
3. getStringCellValue() – Get the value of the cell as a String
4. getRow(int) – Returns the row.
5. getCell(int) – Get the cell representing a given column
6. getNumericCellValue() – Get the value of the cell as a number.
7. getDateCellValue() – Get the value of the cell as a date.
8. getBooleanCellValue() – Get the value of the cell as a boolean.

Below is the sample Excel File:

We can download the Apache POI Jar files from this link and can find the screenshots below for the same.

Points to Remember:

1. Row index starts from ZERO
2. Column index starts from ZERO
3. Extension of excel file is ‘.xlsx’ from Excel 2007
4. If you want to read integer value then you have to use “‘”(i.e. apostrophe) value in front of that value.[Example : 10 → ‘10]
5. We need to use different kind of methods to read String, Integer and Date values from the excel.

Now we will write a sample stand alone program that will read the data from the excel:

import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import java.io.FileInputStream;

public class ReadExcelData
{
    public static void main(String args[]) throws Exception
    {
        FileInputStream fis = new FileInputStream("/Volumes/Krishna/Jar Files/poi-3.16-beta1/TestData.xlsx");
        XSSFWorkbook workbook = new XSSFWorkbook(fis);
        XSSFSheet sheet = workbook.getSheet("Credentials");
        XSSFRow row = sheet.getRow(1);
        XSSFCell cell = row.getCell(0);

        String userName = String.valueOf(cell.getNumericCellValue());
        System.out.println("Value from the Excel sheet :"+ userName);
    }
}

In the above program we have hard-coded the row and column numbers in the program. But for the best practice we will create a util method and will call that method where ever we need. For this we will write 2 classes, one will have the actual logic to read the excel data and another class will call this method.




Below is the excel read data util class. In this we will write a method called “getCellData()” and it will accept 3 parameters called sheetName, columnNumber and rowNumber.

import org.apache.poi.hssf.usermodel.HSSFDateUtil;
import org.apache.poi.ss.usermodel.CellType;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import java.io.FileInputStream;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;

public class ExcelApiTest
{
    public FileInputStream fis = null;
    public XSSFWorkbook workbook = null;
    public XSSFSheet sheet = null;
    public XSSFRow row = null;
    public XSSFCell cell = null;

    public ExcelApiTest(String xlFilePath) throws Exception
    {
        fis = new FileInputStream(xlFilePath);
        workbook = new XSSFWorkbook(fis);
        fis.close();
    }

    public String getCellData(String sheetName,int colNum,int rowNum)
    {
        try
        {
            sheet = workbook.getSheet(sheetName);
            row = sheet.getRow(rowNum);
            cell = row.getCell(colNum);
            if(cell.getCellTypeEnum() == CellType.STRING)
                return cell.getStringCellValue();
            else if(cell.getCellTypeEnum() == CellType.NUMERIC || cell.getCellTypeEnum() == CellType.FORMULA)
            {
                String cellValue  = String.valueOf(cell.getNumericCellValue());
                if (HSSFDateUtil.isCellDateFormatted(cell))
                {
                    DateFormat df = new SimpleDateFormat("dd/MM/yy");
                    Date date = cell.getDateCellValue();
                    cellValue = df.format(date);
                }
                return cellValue;
            }else if(cell.getCellTypeEnum() == CellType.BLANK)
                return "";
            else
                return String.valueOf(cell.getBooleanCellValue());
        }
        catch(Exception e)
        {
            e.printStackTrace();
            return "row "+rowNum+" or column "+colNum +" does not exist  in Excel";
        }
    }
}

Below is a sample which will call the method from the above program to read the excel data using column number:

public class ReadExcelDataUsingUtilClass
{
    public static void main(String args[]) throws Exception
    {
        ExcelApiTest eat = new ExcelApiTest("/Volumes/Krishna/Jar Files/poi-3.16-beta1/TestData.xlsx");
        System.out.println(eat.getCellData("Credentials",0,2));
        System.out.println(eat.getCellData("Credentials",1,2));
        System.out.println(eat.getCellData("Credentials",2,2));
        System.out.println(eat.getCellData("Credentials",3,2));
    }
}

This way we will read the excel data using column number.

Please watch youtube video for better and more understanding.

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