Auto size height for rows in Apache POI

Question

I am inputting values into a spreadsheet using Apache POI. These values have newlines, and I was able to use this code successfully:

CellStyle style = cell.g         


        

Answer 1

//we can use column width for sheet

Ex: sheet.setColumnWidth(0, 2000);

Answer 2

Workaround for “LibreOffice Calc“ and “WPS Spreadsheet” with auto height for merged sells.

I add a column out to the right of a main document (In my case it was 32 column) Set width as all merged cells with same text. Set style WrapText to true Set style to Align Top Copy content which will be displayed in the merged cells Set that column to be hidden Set a row height = -1

A sample of code:

   private void applyRowHightWorkaroundForMergedCells(HSSFCell cell0) {
       HSSFSheet sheet = cell0.getSheet();
       HSSFRow row = cell0.getRow();
    
       String value = cell0.getStringCellValue();
       HSSFCell cell = row.createCell(32);
       sheet.setColumnWidth(32, 32000);
       cell.getCellStyle().setWrapText(true);
       cell.getCellStyle().setVerticalAlignment(VerticalAlignment.TOP);
       cell.setCellValue(value);
       sheet.setColumnHidden(32, true);
       row.setHeight((short) -1);
   }

Answer 3

Row aitosize work for me:

cell.getRow().setHeight((short)0);

Here 0 for calculate autoheight.

Answer 4

You can't adjust cell height directly. But you can change the row's height

final HSSFSheet fs = wb.createSheet("sheet1");
final HSSFRow row0 = fs.createRow(0);
final HSSFCell cellA1 = row0.createCell(0);
row0.setHeight((short)700);

Answer 5

HSSFWorkbook workbook=new HSSFWorkbook();
HSSFSheet sheet =  workbook.createSheet("FirstSheet");  
HSSFRow rowhead=   sheet.createRow((short)0);
HSSFCellStyle style = workbook.createCellStyle();
style.setWrapText(true);
row.setRowStyle(style);
row.getCell(0).setCellStyle(style);

The above code will generate dynamic height of rows.

Answer 6

The only way I got this to work was write my own implementation to calculate the row height. The code is now released as the Taro project, so you could use that. It has numerous convenience methods to let you write an Excel file in far fewer lines of code.

If you prefer to put the implementation in your own code, you can find it in the SpreadsheetTab class. There is an autoSizeRow(int rowIndex) method half way down. It basically iterates down the row and for each cell finds the number of lines of text, then uses the font size to calculate the optimal cell height. It then sets the row height to the height of the tallest cell.