Java tutorial
/* * The MIT License * * Copyright 2014 Admin. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ package WeeklyOPD; import testpoi_.*; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.util.ArrayList; import java.util.HashMap; import java.util.Iterator; import org.apache.poi.ss.usermodel.Cell; import org.apache.poi.ss.usermodel.Row; import org.apache.poi.xssf.usermodel.XSSFSheet; import org.apache.poi.xssf.usermodel.XSSFWorkbook; /** * * @author Admin */ public class SplitOldDepartmentwise { /*************************** TO UPDATE ON EVERY RUN ******************************/ // final static String date = "4.2.14"; final static String date = "April2014"; /*********************************************************************************/ // final static String path = "C:\\Documents and Settings\\Chandni\\My Documents\\NetBeansProjects\\TestPOI\\Docs\\"+date+"\\"; // final static String path = "/home/chandni/NetBeansProjects/POI_POC/docs/"+date+"/"; final static String path = "/home/chandni/NetBeansProjects/TestPOI/Docs/Weekly Data/" + date + "/"; static XSSFWorkbook workbookOld; static XSSFSheet sheetAllOld; static XSSFSheet sheets[]; public static void main(String args[]) { FileInputStream fileOldIn = null; FileOutputStream fileOldOut = null; try { fileOldIn = new FileInputStream(new File(path + "old.xlsx")); workbookOld = new XSSFWorkbook(fileOldIn); sheetAllOld = workbookOld.getSheetAt(0); sheets = new XSSFSheet[9]; fileOldOut = new FileOutputStream(new File(path + "old.xlsx")); createDepartmentwiseSheets(); workbookOld.write(fileOldOut); System.out.println("old.xlsx split successfully.."); } catch (Exception e) { e.printStackTrace(); } finally { try { if (fileOldIn != null) fileOldIn.close(); if (fileOldOut != null) fileOldOut.close(); } catch (Exception e) { System.err.println("Error closing file streams!"); e.printStackTrace(); } } } private static void createDepartmentwiseSheets() { HashMap<String, Integer> depttMap = new HashMap<>(); depttMap.put("Medicine", 1); depttMap.put("Surgery", 2); depttMap.put("Obs & Gynae", 3); depttMap.put("Paediatrics", 4); depttMap.put("Orthopaedics", 5); depttMap.put("Ophthalmology", 6); depttMap.put("ENT", 7); depttMap.put("Dental", 8); depttMap.put("Casualty", 9); int depttSheetCreateFlag = 0; System.out.println("In createDepartmentwiseSheets"); Iterator<Row> rowIterator = sheetAllOld.rowIterator(); //Store the first row to be printed as it is. ArrayList<String> heading = new ArrayList<>(); Row row = rowIterator.next(); Iterator<Cell> cellIterator = row.cellIterator(); while (cellIterator.hasNext()) heading.add(cellIterator.next().getStringCellValue()); int rowNums[] = { 1, 1, 1, 1, 1, 1, 1, 1, 1 }; while (rowIterator.hasNext()) { row = rowIterator.next(); XSSFSheet sheetToWrite = null; System.out.println("Row: " + row.getRowNum()); Cell cell = row.getCell(0); if ((depttSheetCreateFlag & 1 << (depttMap.get(cell.getStringCellValue()))) == 0) { //that means this deptt came in this sheet for the first time in this row. XSSFSheet sheet = sheets[depttMap.get(cell.getStringCellValue()) - 1] = workbookOld .createSheet(cell.getStringCellValue()); //create heading row in this sheet Row headingRow = sheet.createRow(0); for (int i = 0; i < heading.size(); i++) { String cellString = heading.get(i); Cell headingCell = headingRow.createCell(i); headingCell.setCellValue(cellString);//sets cell type to string too } //mark this deptt. as seen depttSheetCreateFlag |= (1 << (depttMap.get(cell.getStringCellValue()))); } int sheetNum = depttMap.get(cell.getStringCellValue()) - 1; sheetToWrite = sheets[sheetNum]; assert (sheetToWrite != null); //write row to sheetToWrite Row rowNew = sheetToWrite.createRow(rowNums[sheetNum]++); cellIterator = row.cellIterator(); int cellNum = 0; while (cellIterator.hasNext()) { cell = cellIterator.next(); //write cell Cell cellNew = rowNew.createCell(cellNum++); String cellValue; if (cell.getCellType() == Cell.CELL_TYPE_NUMERIC) cellValue = (int) (cell.getNumericCellValue()) + ""; else cellValue = cell.getStringCellValue(); cellNew.setCellValue(cellValue); } } } }