Busy Developers' Guide to HSSF Features

Want to use HSSF read and write spreadsheets in a hurry? This guide is for you. If you're after more in-depth coverage of the HSSF user-API please consult the HOWTO guide as it contains actual descriptions of how to use this stuff.

  • How to create a new workbook
  • How to create a sheet
  • How to create cells
  • How to create date cells
  • Working with different types of cells
  • Aligning cells
  • Working with borders
  • Fills and color
  • Merging cells
  • Working with fonts
  • Reading and writing
  • Use newlines in cells.
HSSFWorkbook wb = new HSSFWorkbook(); FileOutputStream fileOut = new FileOutputStream("workbook.xls"); wb.write(fileOut); fileOut.close();
HSSFWorkbook wb = new HSSFWorkbook(); HSSFSheet sheet1 = wb.createSheet("new sheet"); HSSFSheet sheet2 = wb.createSheet("second sheet"); FileOutputStream fileOut = new FileOutputStream("workbook.xls"); wb.write(fileOut); fileOut.close();
HSSFWorkbook wb = new HSSFWorkbook(); HSSFSheet sheet = wb.createSheet("new sheet"); // Create a row and put some cells in it. Rows are 0 based. HSSFRow row = sheet.createRow((short)0); // Create a cell and put a value in it. HSSFCell cell = row.createCell((short)0); cell.setCellValue(1); // Or do it on one line. row.createCell((short)1).setCellValue(1.2); row.createCell((short)2).setCellValue("This is a string"); row.createCell((short)3).setCellValue(true); // Write the output to a file FileOutputStream fileOut = new FileOutputStream("workbook.xls"); wb.write(fileOut); fileOut.close();
HSSFWorkbook wb = new HSSFWorkbook(); HSSFSheet sheet = wb.createSheet("new sheet"); // Create a row and put some cells in it. Rows are 0 based. HSSFRow row = sheet.createRow((short)0); // Create a cell and put a date value in it. The first cell is not styled // as a date. HSSFCell cell = row.createCell((short)0); cell.setCellValue(new Date()); // we style the second cell as a date (and time). It is important to // create a new cell style from the workbook otherwise you can end up // modifying the built in style and effecting not only this cell but other cells. HSSFCellStyle cellStyle = wb.createCellStyle(); cellStyle.setDataFormat(HSSFDataFormat.getFormat("m/d/yy h:mm")); cell = row.createCell((short)1); cell.setCellValue(new Date()); cell.setCellStyle(cellStyle); // Write the output to a file FileOutputStream fileOut = new FileOutputStream("workbook.xls"); wb.write(fileOut); fileOut.close();
HSSFWorkbook wb = new HSSFWorkbook(); HSSFSheet sheet = wb.createSheet("new sheet"); HSSFRow row = sheet.createRow((short)2); row.createCell((short) 0).setCellValue(1.1); row.createCell((short) 1).setCellValue(new Date()); row.createCell((short) 2).setCellValue("a string"); row.createCell((short) 3).setCellValue(true); row.createCell((short) 4).setCellType(HSSFCell.CELL_TYPE_ERROR); // Write the output to a file FileOutputStream fileOut = new FileOutputStream("workbook.xls"); wb.write(fileOut); fileOut.close();
public static void main(String[] args) throws IOException { HSSFWorkbook wb = new HSSFWorkbook(); HSSFSheet sheet = wb.createSheet("new sheet"); HSSFRow row = sheet.createRow((short) 2); createCell(wb, row, (short) 0, HSSFCellStyle.ALIGN_CENTER); createCell(wb, row, (short) 1, HSSFCellStyle.ALIGN_CENTER_SELECTION); createCell(wb, row, (short) 2, HSSFCellStyle.ALIGN_FILL); createCell(wb, row, (short) 3, HSSFCellStyle.ALIGN_GENERAL); createCell(wb, row, (short) 4, HSSFCellStyle.ALIGN_JUSTIFY); createCell(wb, row, (short) 5, HSSFCellStyle.ALIGN_LEFT); createCell(wb, row, (short) 6, HSSFCellStyle.ALIGN_RIGHT); // Write the output to a file FileOutputStream fileOut = new FileOutputStream("workbook.xls"); wb.write(fileOut); fileOut.close(); } /** * Creates a cell and aligns it a certain way. * * @param wb the workbook * @param row the row to create the cell in * @param column the column number to create the cell in * @param align the alignment for the cell. */ private static void createCell(HSSFWorkbook wb, HSSFRow row, short column, short align) { HSSFCell cell = row.createCell(column); cell.setCellValue("Align It"); HSSFCellStyle cellStyle = wb.createCellStyle(); cellStyle.setAlignment(align); cell.setCellStyle(cellStyle); }
HSSFWorkbook wb = new HSSFWorkbook(); HSSFSheet sheet = wb.createSheet("new sheet"); // Create a row and put some cells in it. Rows are 0 based. HSSFRow row = sheet.createRow((short) 1); // Create a cell and put a value in it. HSSFCell cell = row.createCell((short) 1); cell.setCellValue(4); // Style the cell with borders all around. HSSFCellStyle style = wb.createCellStyle(); style.setBorderBottom(HSSFCellStyle.BORDER_THIN); style.setBottomBorderColor(HSSFCellStyle.BLACK); style.setBorderLeft(HSSFCellStyle.BORDER_THIN); style.setLeftBorderColor(HSSFCellStyle.GREEN); style.setBorderRight(HSSFCellStyle.BORDER_THIN); style.setRightBorderColor(HSSFCellStyle.BLUE); style.setBorderTop(HSSFCellStyle.BORDER_MEDIUM_DASHED); style.setTopBorderColor(HSSFCellStyle.AUTOMATIC); cell.setCellStyle(style); // Write the output to a file FileOutputStream fileOut = new FileOutputStream("workbook.xls"); wb.write(fileOut); fileOut.close();
HSSFWorkbook wb = new HSSFWorkbook(); HSSFSheet sheet = wb.createSheet("new sheet"); // Create a row and put some cells in it. Rows are 0 based. HSSFRow row = sheet.createRow((short) 1); // Aqua background HSSFCellStyle style = wb.createCellStyle(); style.setFillBackgroundColor(HSSFCellStyle.AQUA); style.setFillPattern(HSSFCellStyle.BIG_SPOTS); HSSFCell cell = row.createCell((short) 1); cell.setCellValue("X"); cell.setCellStyle(style); // Orange "foreground", foreground being the fill foreground not the font color. style = wb.createCellStyle(); style.setFillForegroundColor(HSSFCellStyle.ORANGE); style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND); cell = row.createCell((short) 2); cell.setCellValue("X"); cell.setCellStyle(style); // Write the output to a file FileOutputStream fileOut = new FileOutputStream("workbook.xls"); wb.write(fileOut); fileOut.close();
HSSFWorkbook wb = new HSSFWorkbook(); HSSFSheet sheet = wb.createSheet("new sheet"); HSSFRow row = sheet.createRow((short) 1); HSSFCell cell = row.createCell((short) 1); cell.setCellValue("This is a test of merging"); sheet.addMergedRegion(new Region(1,(short)1,1,(short)2)); // Write the output to a file FileOutputStream fileOut = new FileOutputStream("workbook.xls"); wb.write(fileOut); fileOut.close();
HSSFWorkbook wb = new HSSFWorkbook(); HSSFSheet sheet = wb.createSheet("new sheet"); // Create a row and put some cells in it. Rows are 0 based. HSSFRow row = sheet.createRow((short) 1); // Create a new font and alter it. HSSFFont font = wb.createFont(); font.setFontHeightInPoints((short)24); font.setFontName("Courier New"); font.setItalic(true); font.setStrikeout(true); // Fonts are set into a style so create a new one to use. HSSFCellStyle style = wb.createCellStyle(); style.setFont(font); // Create a cell and put a value in it. HSSFCell cell = row.createCell((short) 1); cell.setCellValue("This is a test of fonts"); cell.setCellStyle(style); // Write the output to a file FileOutputStream fileOut = new FileOutputStream("workbook.xls"); wb.write(fileOut); fileOut.close();
POIFSFileSystem fs = new POIFSFileSystem(new FileInputStream("workbook.xls")); HSSFWorkbook wb = new HSSFWorkbook(fs); HSSFSheet sheet = wb.getSheetAt(0); HSSFRow row = sheet.getRow(2); HSSFCell cell = row.getCell((short)3); if (cell == null) cell = row.createCell((short)3); cell.setCellType(HSSFCell.CELL_TYPE_STRING); cell.setCellValue("a test"); // Write the output to a file FileOutputStream fileOut = new FileOutputStream("workbook.xls"); wb.write(fileOut); fileOut.close();
HSSFWorkbook wb = new HSSFWorkbook(); HSSFSheet s = wb.createSheet(); HSSFRow r = null; HSSFCell c = null; HSSFCellStyle cs = wb.createCellStyle(); HSSFFont f = wb.createFont(); HSSFFont f2 = wb.createFont(); cs = wb.createCellStyle(); cs.setFont( f2 ); //Word Wrap MUST be turned on cs.setWrapText( true ); r = s.createRow( (short) 2 ); r.setHeight( (short) 0x349 ); c = r.createCell( (short) 2 ); c.setCellType( HSSFCell.CELL_TYPE_STRING ); c.setCellValue( "Use \n with word wrap on to create a new line" ); c.setCellStyle( cs ); s.setColumnWidth( (short) 2, (short) ( ( 50 * 8 ) / ( (double) 1 / 20 ) ) ); FileOutputStream fileOut = new FileOutputStream( "workbook.xls" ); wb.write( fileOut ); fileOut.close();