POI--各种样式的XSSFCellStyle的生成

    //背景色、フォント色、枠線より各種XSSFCellStyleの作成して、cellStyleMapに保存する
    private HashMap<String, XSSFCellStyle> createXssfCellStyle() {
        HashMap<String, XSSFCellStyle> cellStyleMap = new HashMap<>();
 
        XSSFCellStyle xssfCellStyle;
        String mapKey = "";
        XSSFColor[] xssfColorArr = new XSSFColor[bgColorArr.length];
        XSSFFont[] xssfFontArr = new XSSFFont[fontColorArr.length];
        for(int bgColorIndex=0; bgColorIndex<bgColorArr.length; bgColorIndex++) {
            xssfColorArr[bgColorIndex] = createXssfColor(bgColorArr[bgColorIndex]);
        }
        for(int fontColorIndex=0; fontColorIndex<fontColorArr.length; fontColorIndex++) {
            xssfFontArr[fontColorIndex] = createXssfFont(fontColorArr[fontColorIndex]);
        }
 
        for (int bgColorIndex=0; bgColorIndex<bgColorArr.length; bgColorIndex++) {
            for(int fontColorIndex=0; fontColorIndex<fontColorArr.length; fontColorIndex++) {
                for(int rightBorderNameIndex=0; rightBorderNameIndex<borderNameArr.length; rightBorderNameIndex++ ) {
                    for (int bottomBorderNameIndex=0; bottomBorderNameIndex<borderNameArr.length; bottomBorderNameIndex++ ) {
                        for (int dataFormatIndex=0; dataFormatIndex<dataFormatArr.length; dataFormatIndex++) {
                            for (int wrapTextIndex=0; wrapTextIndex < wrapTextArr.length; wrapTextIndex++) {
                                xssfCellStyle = wb.createCellStyle();
                                xssfCellStyle.setFillForegroundColor(xssfColorArr[bgColorIndex]);
                                xssfCellStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND);
                                xssfCellStyle.setFont(xssfFontArr[fontColorIndex]);
                                xssfCellStyle.setBorderTop(BorderStyle.HAIR);
                                xssfCellStyle.setBorderLeft(BorderStyle.HAIR);
                                xssfCellStyle.setBorderRight(BorderStyle.valueOf(borderNameArr[rightBorderNameIndex]));
                                xssfCellStyle.setBorderBottom(BorderStyle.valueOf(borderNameArr[bottomBorderNameIndex]));
                                xssfCellStyle.setDataFormat(dataFormatArr[dataFormatIndex]);
                                xssfCellStyle.setWrapText(wrapTextArr[wrapTextIndex]);
 
                                //right border name(MEDIUMやHAIR) + bottom border name(MEDIUMやHAIR) + font color(000000など) + background color (ffffffなど)
                                mapKey = borderNameArr[rightBorderNameIndex]
                                        + borderNameArr[bottomBorderNameIndex]
                                        + fontColorArr[fontColorIndex]
                                        + bgColorArr[bgColorIndex]
                                        + dataFormatArr[dataFormatIndex]
                                        + wrapTextKeyArr[wrapTextIndex];
                                cellStyleMap.put(mapKey, xssfCellStyle);
                            }
 
                        }
 
                    }
                }
            }
        }
        return cellStyleMap;
    }
 
    //右枠線のNAME、下枠線のNAME、フォント色、背景色より、合っているXSSFCellStyleを取得
    private XSSFCellStyle getXssfCellStyle(String rightBorderName, String bottomBorderName, String fontColor, String bgColor, int dataFormat, boolean isWrapped ) {
        String wrapTextKey = WRAP_TEXT_KEY_FALSE;
        if (isWrapped) {
            wrapTextKey = WRAP_TEXT_KEY_TRUE;
        }
        String mapKey = rightBorderName + bottomBorderName + fontColor + bgColor + dataFormat + wrapTextKey;
        if (!xssfCellStyleMap.containsKey(mapKey)) {
        }
        return xssfCellStyleMap.get(mapKey);
    }