https://bz.apache.org/bugzilla/show_bug.cgi?id=60905

--- Comment #2 from Aman Garg <[email protected]> ---
 public  void compareExcels() {
        try {
            File currentDirectory = new File(new
File("exceldownloads").getAbsolutePath());
            // get input excel files
            FileInputStream excellFile1 = new FileInputStream(
                    new File(currentDirectory.getAbsoluteFile() + "/"+
"Production.xlsx"));
            FileInputStream excellFile2 = new FileInputStream(
                    new File(currentDirectory.getAbsoluteFile() +"/" +
"Testing.xlsx"));

            // Create Workbook instance holding reference to .xlsx file
            XSSFWorkbook workbook1 = new XSSFWorkbook(excellFile1);
            XSSFWorkbook workbook2 = new XSSFWorkbook(excellFile2);

            XSSFFont font1 = workbook1.createFont();
            font1.setColor(XSSFFont.COLOR_RED);
            font1.setBoldweight(XSSFFont.BOLDWEIGHT_BOLD);

            XSSFFont font2 = workbook2.createFont();
            font2.setColor(XSSFFont.COLOR_RED);
            font2.setBoldweight(XSSFFont.BOLDWEIGHT_BOLD);

            XSSFCellStyle style1 = workbook1.createCellStyle();
            style1.setFillBackgroundColor(IndexedColors.YELLOW.getIndex());
            style1.setFillPattern(XSSFCellStyle.SOLID_FOREGROUND);
            style1.setFont(font1);

            XSSFCellStyle style2 = workbook2.createCellStyle();
            style2.setFillBackgroundColor(IndexedColors.YELLOW.getIndex());
            style2.setFillPattern(XSSFCellStyle.SOLID_FOREGROUND);
            style2.setFont(font2);

            // Get first/desired sheet from the workbook
            XSSFSheet sheet1 = workbook1.getSheetAt(0);
            XSSFSheet sheet2 = workbook2.getSheetAt(0);

            // Compare sheets
            if (compareTwoSheets(sheet1, sheet2, style1, style2)) {
                Reporter.log("<li><font size='3' color='blueviolet'
face='arial'>"
                        + "\n\nBoth Excels are equal" + "</li></font size>");
            } else {
                Reporter.log("<li><font size='3' color='red' face='arial'>"
                        + "\n\n Both excels are not equal" + "</li></font
size>");
            }

            // close files
            excellFile1.close();
            excellFile2.close();
            workbook1.close();
            workbook2.close();

            FileOutputStream fileOut = new FileOutputStream(
                    new File(currentDirectory.getAbsoluteFile() + "/" +
"Production.xlsx"));
            workbook1.write(fileOut);
            fileOut.close();
            FileOutputStream fileOut1 = new FileOutputStream(
                    new File(currentDirectory.getAbsoluteFile() + "/" +
"Testing.xlsx"));
            workbook2.write(fileOut1);
            fileOut1.close();

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

    // Compare Two Sheets
    public static boolean compareTwoSheets(XSSFSheet sheet1, XSSFSheet sheet2,
XSSFCellStyle s1,
            XSSFCellStyle s2) {
        int firstRow1 = sheet1.getFirstRowNum();
        int lastRow1 = sheet1.getLastRowNum();
        boolean equalSheets = true;
        for (int i = firstRow1; i <= lastRow1; i++) {

            Reporter.log("\n\nComparing Row " + i);

            XSSFRow row1 = sheet1.getRow(i);
            XSSFRow row2 = sheet2.getRow(i);
            if (!compareTwoRows(row1, row2, s1, s2)) {
                equalSheets = false;
                Reporter.log("<li><font size='1' color='red' face='arial'>"
                        + "\nRow " + i + " - Not Equal" + "</li></font size>");

            } else {
                Reporter.log("<li><font size='1' color='bluevoilet'
face='arial'>"
                        + "\nRow " + i + " -  Equal" + "</li></font size>");
            }
        }
        return equalSheets;
    }

    // Compare Two Rows
    public static boolean compareTwoRows(XSSFRow row1, XSSFRow row2,
XSSFCellStyle s1,
            XSSFCellStyle s2) {
        if ((row1 == null) && (row2 == null)) {
            return true;
        } else if ((row1 == null) || (row2 == null)) {
            return false;
        }

        int firstCell1 = row1.getFirstCellNum();
        int lastCell1 = row1.getLastCellNum();
        boolean equalRows = true;

        // Compare all cells in a row
        for (int i = firstCell1; i <= lastCell1; i++) {
            XSSFCell cell1 = row1.getCell(i);
            XSSFCell cell2 = row2.getCell(i);
            if (!compareTwoCells(cell1, cell2)) {
                equalRows = false;
                cell1.setCellStyle(s1);
                cell2.setCellStyle(s2);
                Reporter.log("<li><font size='1' color='red' face='arial'>"
                        + "\nCell " + i + " - Not Equal" + "</li></font
size>");

            } else {

                Reporter.log("<li><font size='1' color='bluevoilet'
face='arial'>"
                        + "\nCell " + i + " - Equal" + "</li></font size>");
            }
        }
        return equalRows;
    }

    // Compare Two Cells
    public static boolean compareTwoCells(XSSFCell cell1, XSSFCell cell2) {
        if ((cell1 == null) && (cell2 == null)) {
            return true;
        } else if ((cell1 == null) || (cell2 == null)) {
            return false;
        }

        boolean equalCells = false;
        int type1 = cell1.getCellType();
        int type2 = cell2.getCellType();
        if (type1 == type2) {
            if (cell1.getCellStyle().equals(cell2.getCellStyle())) {
                // Compare cells based on its type
                switch (cell1.getCellType()) {
                case HSSFCell.CELL_TYPE_FORMULA:
                    if (cell1.getCellFormula().equals(cell2.getCellFormula()))
{
                        equalCells = true;

                    }
                    break;
                case HSSFCell.CELL_TYPE_NUMERIC:
                    if (cell1.getNumericCellValue() ==
cell2.getNumericCellValue()) {
                        equalCells = true;
                    }
                    break;
                case HSSFCell.CELL_TYPE_STRING:
                    if
(cell1.getStringCellValue().equals(cell2.getStringCellValue())) {
                        equalCells = true;
                    }
                    break;
                case HSSFCell.CELL_TYPE_BLANK:
                    if (cell2.getCellType() == HSSFCell.CELL_TYPE_BLANK) {
                        equalCells = true;
                    }
                    break;
                case HSSFCell.CELL_TYPE_BOOLEAN:
                    if (cell1.getBooleanCellValue() ==
cell2.getBooleanCellValue()) {
                        equalCells = true;
                    }
                    break;
                case HSSFCell.CELL_TYPE_ERROR:
                    if (cell1.getErrorCellValue() == cell2.getErrorCellValue())
{
                        equalCells = true;
                    }
                    break;
                default:
                    if
(cell1.getStringCellValue().equals(cell2.getStringCellValue())) {
                        equalCells = true;
                    }
                    break;
                }
            } else {
                return false;
            }
        } else {
            return false;
        }
        return equalCells;
    }

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