How to get column name of Excel sheets using Java? I am using jexcel package for reading from and writing into excel sheet. And also how to change a column name of an Excel sheet?
Which version of Java and Excel are you talking about?
For all versions of Excel till Excel 2003 you can use http://jexcelapi.sourceforge.net/.
For 2007, you can use http://poi.apache.org/index.html
I do not know of any Java APIs for Excel 2010. Sorry about that!
POI supports Excel 2010 as well. Using the XSSF library is suggested as the xlsx files tend to be slower to parse:
http://poi.apache.org/spreadsheet/index.html
Related
I'm learning about data driven testing using Selenium and Excel. I'm taking an online course that has asked used to add the Apache poi and poi-ooxml dependencies in Maven.
I'm struggling to understand what the differences between the two are. Are both required in order to retrieve data in Excel and pass these to our tests?
Thanks
Excel files has long history
Excel 97-2003 workbook:
This is a legacy Excel file that follows a binary file format. The file extension of the format is .xls.
Excel 97-2003 in terms of apache poi is called - Horrible Spreadsheet Format As the Excel file format is complex and contains a number of tricky characteristics,
apache-poi jar has code to handle these file
Excel 2007+ workbook:
This is the default XML-based file format for Excel 2007 and later versions. It follows the Office Open XML (OOXML) format, which is a zipped, XML-based file format developed by Microsoft for representing office documents. The file extension of the format is .xlsx. ( DOCX,PPTX are other OOXML based examples).
Excel 2007+ workbook in terms of apache poi is called - XML Spreadsheet Format -these file format are advanced version of HSSF and has additional features, code to handle these files are written in apache-poi-ooxml jar
More reading
As .xls is almost dead but still some applications use it, so for backward compatibility both dependencies are required.
here is what Apache have to say -
HSSF Excel XLS poi For HSSF only, if common SS is needed see below
Common SS Excel XLS and XLSX poi-ooxml WorkbookFactory and friends
all require poi-ooxml, not just core poi
you can read more at their official website http://poi.apache.org/components/index.html#components
HSSF is the POI Project's pure Java implementation of the Excel '97(-2007) file format. XSSF is the POI Project's pure Java implementation of the Excel 2007 OOXML (.xlsx) file format.
Are there any export limitations when using HSSF?
I've once read somewhere that Excel '97 just supported <65.000 Entries.
Is it safe to use HSSF to export excel sheets with more than 65.000 Entries, or why would I use XSSF?
As you can see here Excel 97 to 2003 supports a maximum of 65,536 rows. So no, with HSSF you won't be able to store more than 65536 entries. However you can do it with XLSX (Excel 2007+) which can handle up to 1,048,576 rows and can be saved using XSSF. It won't be compatible with Excel 97/2003 though.
HOw do we input data in excel sheet using java code , the excel sheet format is shown in the photo below.
The Total days and Hrs are calculated automatically here in sheet as soon as i enter in the above columns, Please tell me how do start . Also these input are associated to the other sheet(sheet2) . so please tell me the way so that it also flexible and i can modify the data in the sheet2.
![Excel sheet that needs to be automated][2]
Use a third party library like apache poi for reading Excel data in Java.
You might want to try the jexcelapi found on sourceforge: JExcelApi
Very easy to use to read & write excel files from java.
You use Java Excel API. This is an excellent article that demonstrates reading from and writing to Excel with Java.
Here is the Java Excel API download.
I have 200,000 or more records in an Excel file. If I tried to read records row by row and create a CSV file it's very costly as well as time consuming. Is there any API that can help me with that?
There are several frameworks out there, if you have a look.
For example, you can try:
Apache POI (example)
JExcel (example)
This seems to be the same question as How to import an Excel file into MySQL using ODBC in Java?
What has changed? If you want to write to a CSV file you should use a CSV library such as OpenCSV: http://opencsv.sourceforge.net/
I want to open an Excel file in browser using java 1.6. If I have changed excel sheet cell value then it will reflect on original excel file...
How to do this?
I have used the POI libary from Apache (http://poi.apache.org/) to create/manipulate .xls in the past quite successfully.
I shall recommend to use JExcel API. I guess it is more convenient to use.
Probably this post will help you to decide between POI and JExcel: http://java.itags.org/java-tools/122717/