Data Driven Approach - Using HashMap/Dictionary for Selenium automation

In this article, we will discuss how to create data dictionary or hash map in Java for data driven tests and read the data from the excel/csv file similar to dictionary object. Please go through below code example to read data from the external source using hashmap/dictionary or data driven approach. Please suggest or comment for better approach for data driven testing in java for Selenium.

package testingtest;

import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import jxl.Cell;
import jxl.Sheet;
import jxl.Workbook;
import jxl.read.biff.BiffException;

class testclass {

 static String[][] getexceldatainArray;
 static HashMap<String, String> dictionary;

 public static void main(String[] args) throws IOException, BiffException {
  // Create an array based on data in excel file
  excelarrayclass tc = new excelarrayclass();
  getexceldatainArray = tc.CreateArrayfromExcel("D:\\Testing.xls",
    "testing");
  for (int i = 0; i < getexceldatainArray.length; i++) {
   dictionary = DataDictionaryFromArray(getexceldatainArray, i);
   // the keys will be value in the header column
   String username = dictionary.get("UserName");
   /*
    * Perform the required operation using the dictionary values
    */
   System.out.println("UserName " + username);
  }
 }

 public String[][] CreateArrayfromExcel(String WorkbookName, String SheetName)
   throws BiffException, IOException {
  String[][] arrTestDta;

  Workbook workbk = Workbook.getWorkbook(new File(WorkbookName));
  Sheet wrkSheet = workbk.getSheet(SheetName);
  arrTestDta = new String[wrkSheet.getRows()][wrkSheet.getColumns()];

  // Loop to get data from excel file into an array

  for (int i = 0; i < wrkSheet.getRows(); i++) {
   for (int j = 0; j < wrkSheet.getColumns(); j++) {
    Cell cell = wrkSheet.getCell(j, i);
    if (cell.getContents() != null) {
     arrTestDta[i][j] = cell.getContents();
    }
   }
  }
  return arrTestDta;
 }

 public static HashMap<String, String> DataDictionaryFromArray(
  String[][] arrayforDictionary, int iRow) {
  // Create a hashmap to store the data as dictionary in key value form
  HashMap<String, String> dictionary = new HashMap<String, String>();
  // get the size of the array, assuming being used in data driven test,
  // get the number of columns in the data file
  int iColCnt = arrayforDictionary[0].length;
  for (int i = 0; i < iColCnt; i++) {
   // mark the header column values as key and current column value as
   // key value pair
   dictionary.put(arrayforDictionary[0][i],
     arrayforDictionary[iRow][i]);
  }
  return dictionary;
 }
}