Setting Excel cell value in Numeric format using POI

Question

I want to store numeric data in excel sheet.
The numeric data is represented by String type in my java code.
Is it possible to set it as numeric without casting it?

I've tried the following code, but it wasn't converted to numeric type (I get a warning in excel saying that number is stored as text...)

HSSFCell dCell =...
dCell.setCellType(Cell.CELL_TYPE_NUMERIC);
dCell.setCellValue("112.45")

Isn't the setCellValue method overloaded to support other types, i.e. can't you pass a float or something into that method? You are currently passing a string. — mydoghasworms, Jan 23 '12 at 06:31
Yes, I can pass any type. I asked if its possible to pass value AS String and auto-convert it to the needed type. — omrid, Jan 23 '12 at 06:40
see this: [enter link description here][1] [1]: http://stackoverflow.com/questions/5335285/write-number-in-excel-cell-with-poi — John Ding, Jun 10 '14 at 13:57

score 26 · Accepted Answer · edited Jan 12 '14 at 10:54

26

You have to provide the value as a double. As the doc says:

setCellValue

public void setCellValue(double value)

set a numeric value for the cell

Parameters:

value - the numeric value to set this cell to. For formulas we'll set the precalculated value, for numerics we'll set its value. For other types we will change the cell to a numeric cell and set its value.

So, it should be

dCell.setCellValue(new Double("123"));

OR

dCell.setCellValue(123);  //Remember, the way you did was, you actually passed a string (no quotes)

edited Jan 12 '14 at 10:54

Shadow The GPT Wizard

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answered Jan 23 '12 at 06:36

shadyabhi

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1

so I must set value in the needed type? it can't be "auto-converted" from String? – omrid Jan 23 '12 at 06:39
2

No, simply use what I said or dCell.setCellValue(123). Remember, no quotes or it will make it a string. (which you actually did) – shadyabhi Jan 23 '12 at 06:40

score 8 · Answer 2 · answered Jan 23 '12 at 06:34

8

I used Big Decimal for this,

dCell.setCellValue(new BigDecimal("112.45").doubleValue());

answered Jan 23 '12 at 06:34

Kushan

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Thank you. I was looking for Big decimal conversion too. – ram Jun 29 '17 at 02:02

score 2 · Answer 3 · answered Jan 23 '12 at 06:34

2

Try to use wrapper classes:

dCell.setCellValue(new Double(112.45));

BTW, it will work if you simply give the value instead of the double cotes as follows:

dCell.setCellValue(112.45);

answered Jan 23 '12 at 06:34

Arun

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score 1 · Answer 4 · answered Jun 05 '14 at 09:09

Old one But Still it This will help Some one from .NET who use NPOI

dCell.setCellValue(Convert.ToDouble(112.45));

We do have

cell.SetCellType(NPOI.SS.UserModel.CellType.NUMERIC);

which doesn't remove the warning but the 1st code did worked after converting to Double for All integers and Double values in .net

Setting Excel cell value in Numeric format using POI

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