Autowidth is not working for merged columns

Question

{
row=sheet.createRow(0);
cell=row.createCell(0);
cell.setCellValue(\"header\");
cell=row.createCell(1);
sheet.addMergedRegion(new CellRangeAddress(0,0,0,1));
row=sh         


        

Answer 1

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);