title: apache poi apply one style to different workbooks
body: <p>I'm trying to apply one cell style to defferent woekbooks. It works well, when I apply it to first workbook, but when I'm trying to do this with second and next workbooks - no style is applied and the following exception is thrown. </p>
  
  <pre><code>Exception in thread "Thread-3" java.lang.IllegalArgumentException: This Style does not belong to the supplied Workbook Stlyes Source. Are you trying to assign a style from one workbook to the cell of a differnt workbook?
      at org.apache.poi.xssf.usermodel.XSSFCellStyle.verifyBelongsToStylesSource(XSSFCellStyle.java:118)
      at org.apache.poi.xssf.usermodel.XSSFCell.setCellStyle(XSSFCell.java:500)
      at CoreLayer.ExportManager.ExcelExproter.applyStyle(ExcelExproter.java:224)
      at CoreLayer.ExportManager.ExcelExproter.groupSchedule(ExcelExproter.java:47)
      at UILayer.ExportDialog$ExportWorker.run(ExportDialog.java:111)
      at java.lang.Thread.run(Thread.java:722)
  </code></pre>
  
  <p>The following code is used:</p>
  
  <pre><code>public void professorSchedule(Professor professor) {
          Workbook wb = new XSSFWorkbook();
          Sheet sheet = wb.createSheet(TextConstants.SCHEDULE);
          String safeName = WorkbookUtil.createSafeSheetName(professor.toString() + ".xlsx");
  
          LinkedHashMap&lt;ScheduleSlot, Lesson&gt; professorSchedule = data.getSchedule().getProfessorSchedule(professor);
          fillProfessorSchedule(sheet, professorSchedule);
  
          applyStyle(wb, sheet);
          try {
              FileOutputStream fileOutputStream = new FileOutputStream(settings.getSchedulesPath() + safeName);
              wb.write(fileOutputStream);
              fileOutputStream.close();
          } catch (IOException e) {
              e.printStackTrace();
          }
      }
  
      private void applyStyle(Workbook wb, Sheet sheet) {
          CellStyle style = wb.createCellStyle();
          style.setWrapText(true);
  
          int columnNumber = 0;
          sheet.autoSizeColumn(columnNumber);
          for (Row row : rows) {
              for (Cell cell : row) {
                  cell.setCellStyle(style);
                  sheet.setColumnWidth(columnNumber++, 5000);
              }
          }
      }  
  </code></pre>
  
  <p>Thanks everybody in advance!</p>