//创建工作簿

        HSSFWorkbook wb = new HSSFWorkbook();

        //创建工作表

        HSSFSheet sheet = wb.createSheet();

        //为工作表添加行

        HSSFRow row = sheet.createRow(0);

        //添加单元格

        HSSFCell cell = row.createCell(0);

        //创建字体

        HSSFFont ftRed = wb.createFont();

        ftRed.setStrikeout(true);

        ftRed.setColor(HSSFColor.RED.index);  

        HSSFFont ftBlue = wb.createFont();

        ftBlue.setColor(HSSFColor.BLUE.index);

        //往单元格中写入的内容,并使用ft格式化"second"单词

        String[] subStr = {

                "first", "second"

        };

        String sText = subStr[0] + "," + subStr[1];

        HSSFRichTextString textString = new HSSFRichTextString(sText);

        textString.applyFont(

                sText.indexOf(subStr[0]),

                sText.indexOf(subStr[0]) + subStr[0].length(),

                ftRed

                );

        textString.applyFont(

                sText.indexOf(subStr[1]),

                sText.indexOf(subStr[1]) + subStr[1].length(),

                ftBlue

                );

        cell.setCellValue(textString);