How to auto adjust the column in excel in apache POI

Question

I am creating an excel file with apache poi the excel is generated but i can not adjust the column with according to the cell values i am posting the code what i have done so far This is how i have created the headers in excel ``` HSSFWorkbook wb = new HSSFWorkbook(); HSSFSheet sheet = wb.createSheet(); sheet.protectSheet("password"); sheet.autoSizeColumn(15); HSSFFont hSSFFont = wb.createFont(); hSSFFont.setFontName(HSSFFont.FONT_ARIAL); hSSFFont.setFontHeightInPoints((short) 8); CellStyle style = wb.createCellStyle(); /* cell style for locking */ CellStyle lockedCellStyle = wb.createCellStyle(); lockedCellStyle.setLocked(true); HSSFRow row = null; HSSFCell cell = null; row = sheet.createRow(0); int headercolumnNo = 0; //1st Column Header for Indicator cell = row.createCell(headercolumnNo); cell.setCellValue(new HSSFRichTextString(listOfActiveCarrierUserHeader.get(0))); style.setWrapText(true); style.setFillForegroundColor(IndexedColors.LIGHT_CORNFLOWER_BLUE.getIndex()); style.setFon…

Accepted Answer

You can use `HSSFSheet.autoSizeColumn(columnNumber)` method to align the columns perfectly.

This method adjusts the column width to fit the contents, read the doc.

After setting all cell values for all columns you can use this method, in your current code call this method after for loop.

Sample code

```
sheet.autoSizeColumn(1);
sheet.autoSizeColumn(2);
```

Note - You have to do this separately for all columns which you want to be aligned and the call to `sheet.autoSizeColumn(columnNumber)` should be made after populating the data into the excel. Calling before populating data will not have any effect.

How to auto adjust the column in excel in apache POI

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