How to read XLSX file in J#.NET

package Tutorial36;

/* -----------------------------------------------------------------------------
 * Tutorial 36
 * 
 * This tutorial shows how to read an Excel XLSX file in J# (the
 * XLSX file generated by Tutorial 04 as base template), modify
 * some data and save it to another XLSX file (Tutorial36 - read XLSX file.xlsx).
 * --------------------------------------------------------------------------- */

import System.*;
import System.IO.*;
import System.Data.*;
import EasyXLS.*;

public class Tutorial36
{

    public Tutorial36()
    {
    }

    /** @attribute System.STAThread() */
    public static void main(String[] args)
    {
        Console.WriteLine("Tutorial 36\n-----------\n");

        // Create an instance of the class that reads Excel files
        ExcelDocument workbook = new ExcelDocument();

        // Read XLSX file
        Console.WriteLine("Reading file C:\\Samples\\Tutorial04.xlsx");

        if (workbook.easy_LoadXLSXFile("C:\\Samples\\Tutorial04.xlsx"))
        {
            // Get the table of data for the second worksheet
            ExcelTable xlsSecondTable = 
                    ((ExcelWorksheet)workbook.easy_getSheet("Second tab")).easy_getExcelTable();

            // Write some data to the second sheet
            xlsSecondTable.easy_getCell("A1").setValue("Data added by Tutorial36");

            for (int column=0; column<5; column++)
            {
                xlsSecondTable.easy_getCell(1, column).setValue("Data " + (column + 1));
            }

            // Export the new XLSX file
            Console.WriteLine("\nWriting file C:\\Samples\\Tutorial36 - read XLSX file.xlsx.");
            workbook.easy_WriteXLSXFile("C:\\Samples\\Tutorial36 - read XLSX file.xlsx");

            // Confirm export of Excel file
            String sError = workbook.easy_getError();
            if (sError.Equals(""))
                Console.Write("\nFile successfully created.");
            else
                Console.Write("\nError encountered: " + sError);
        }
        else
        {
            Console.WriteLine("\nError reading file C:\\Samples\\Tutorial04.xlsx \n" + 
                              workbook.easy_getError());
        }

        Console.WriteLine("\nPress Enter to exit ...");

        // Dispose memory
        workbook.Dispose();

        Console.ReadLine();
    }
}