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{ row=sheet.createRow(0); cell=row.createCell(0); cell.setCellValue("header"); cell=row.createCell(1); sheet.addMergedRegion(new CellRangeAddress(0,0,0,1)); row=sheet.createRow(1); cell=row.createCell(0); cell.setCellValue("Keys"); cell=row.createCell(1); cell=row.setCellValue("Values"); row=sheet.createRow(2); cell=row.createCell(0); cell.setCellValue("No data"); cell=row.createCell(1); sheet.addMergedRegion(new CellRangeAddress(1,1,0,1); sheet.autoSizeColumn(0); }

autosize is working when I merged two columns of row zero, but after merging two columns of second row autosize is not working.. thanks in advance...

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  • Can you define "not working"? Sizes too small? Too big? No change? Commented Jul 15, 2015 at 8:21
  • no change in columns Commented Jul 16, 2015 at 5:45

1 Answer 1

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I've spotted your problem, it's this line:

sheet.autoSizeColumn(0);

From the javadocs on autoSizeColumn(int) we see this key bit of information:

Default is to ignore merged cells.

You need to switch to instead call autoSizeColumn(int,boolean), and pass in a true value. This will tell POI to take account of merged cells during the sizing. So, your code should instead be:

sheet.autoSizeColumn(0, true);
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