public static void clearExportExcel()

in shardingsphere-benchmark/src/main/java/org/apache/shardingsphere/benchmark/common/file/excel/BenchmarkExcelWriter.java [98:149]
50 lines of code
9 McCabe index (conditional complexity)

    public static void clearExportExcel(String excelPath){
        Workbook workbook = null;
        String sheetName = "";
        File exportFile = null;
        FileOutputStream fileOut = null;
        try {
            exportFile = new File(excelPath);
            if(exportFile.exists()){
                workbook = new HSSFWorkbook(new FileInputStream(excelPath));
                List<Long> timeStamps = new ArrayList<Long>();
                int sheetCount = workbook.getNumberOfSheets();
                if (sheetCount >= 9) {
                    for (int i = 0; i < sheetCount; i++) {
                        sheetName = workbook.getSheetName(i);
                        String[] nameSubs = sheetName.split("-");
                        long timeStamp = Long.valueOf(nameSubs[2]).longValue();
                        if (!timeStamps.contains(timeStamp)) {
                            timeStamps.add(timeStamp);
                        }
                    }
                    Collections.sort(timeStamps);
                    long minTimeStamp = timeStamps.get(0);
                    String removedSheetName = "full-routing-" + minTimeStamp;
                    int sheetIndex = workbook.getSheetIndex(removedSheetName);
                    workbook.removeSheetAt(sheetIndex);
                    removedSheetName = "single-routing-" + minTimeStamp;
                    sheetIndex = workbook.getSheetIndex(removedSheetName);
                    workbook.removeSheetAt(sheetIndex);
                    removedSheetName = "range-routing-" + minTimeStamp;
                    sheetIndex = workbook.getSheetIndex(removedSheetName);
                    workbook.removeSheetAt(sheetIndex);
                }
                fileOut = new FileOutputStream(excelPath);
                workbook.write(fileOut);
                workbook.close();
            }
            
            
        } catch (FileNotFoundException ex) {
            ex.printStackTrace();
        } catch (IOException ex) {
            ex.printStackTrace();
        } finally {
            try {
                if (fileOut != null) {
                    fileOut.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }