When I try overwrite existing excel file, I get this error message: By the way, there is no problem if I try write a new excel file.So Its working correctly but I can’t update existing file. What am I doing wrong? There is my code: Answer Multiple issues in your code. If you are creating an OPCPackage o…
Tag: excel
Reading Excel File Column in Java
I have a sample of Excel data that needs to be read and store in the database. Example: I have tried to use Apache POI in reading data by row. But how do I get the Name and the amount from the column at the same time? Something like this Any help would be appreciated. Thanks Answer Result:
Apache POI – Is there a way to count occurrence of a string in a pivot table?
I am using version 4.1.2 of Apache Poi and I have this dataset: I’m trying to create a pivot table using Apache POI that groups and counts the occurrence of strings from the 2nd column. I’ve tried: But it somehow still counts the occurrences from the first column. The pivot table I’m trying …
How to convert a PDF to a JSON/EXCEL/WORD file?
I need to get data from the pdf file with its header for further comparing with DB data I tried to use the pdfbox , google vision ocr , itext, but all libraries gave me a row without structure and headers. Example: DatenNumbernStatusn12122020n442334delivered I will trying convert pdf to excel/word and get dat…
How to download an excel file in Spring RestController
I am using Apache POI to generate .xlsx file. I would like to return that file from Spring controller. Here’s what I’ve done so far: Controller: Is it possible to return actual excel file from rest controller so user can download it to his computer ? As for now controller returning byte[] but I wo…
Apache POI – Conditional formatting – need to set different cell range for rule and formatting
I am trying to create an empty excel template using apache poi java. I need to add a rule – when column no. 3 is populated then columns from 7 to 12 need to be highlighted in some color (as a mandatory indicator for the user). I could find below code which colors the cell when the condition is met
Apache POI java.lang.NoSuchMethodError
My code is below: And the error code I get is: The dependencies for Apache that I have added to my netbeans library are: And from here I pretty much have no idea what to do. Can anyone tell me if my code is wrong or what other dependencies I need? Answer Ok, so as rgettman explained, I had to
Apache POI Excel row color is only black and doesn’t change
I am trying to make excel files background one row white and other aqua color. But for some reason whatever I do the color always changes to black. It doesn’t change whatever I do, even if I try GREY_25_PERCENT its completely black. Here’s picture of my excel file Answer It may seem counterintuiti…
Not able to set custom color in XSSFCell Apache POI
I am trying to set some custom(from hexcode or rgb value) color to a xssfcell.But the color of the cell is becoming black even though I am giving some other color.I have tried doing this by the following ways : //END of the program I tried many other ways mentioned in answers to related questions but none of …
insert data stored in array list in excel using java
Its been a while i m trying to create a excel sheet to store the crawled data in a table format in a excel , the data is fetched from a url and stored in a array list , this data is needed to be stored in a array list ` Answer Your code is globally correct it has only