![]() ![]() instead of using XSSFWorkbook and XSSFSheet, you need to use HSSFWorkbook and HSSFSheet classes from Apache POI library. Reading XLS file is no different than reading an XLSX format file, all you need to do is to use correct workbook implementation for XLS format e.g. Here is how our updated Excel file looks after adding three more rows open an OutputStream to save written data into XLSX file FileOutputStream os = new FileOutputStream(myFile) Creating a new Row in existing XLSX sheet Row row = mySheet. get the last row number to append new data int rownum = mySheet. Set to Iterate and add rows into XLS file Set newRows = data. Traversing over each row of XLSX file while (rowIterator. Get iterator to all the rows in current sheet Iterator rowIterator = mySheet. Return first sheet from the XLSX workbook XSSFSheet mySheet = myWorkBook. Finds the workbook instance for XLSX file XSSFWorkbook myWorkBook = new XSSFWorkbook (fis) You can see we have used two for loop, one to iterate over all rows and the inner loop is to go through each column.įile myFile = new File( "C://temp/Employee.xlsx") įileInputStream fis = new FileInputStream(myFile) This how exactly you read rows and columns from an Excel file in Java. Here is how our sample Excel 2013 File looks like, remember this has saved in. If you are not using Maven then add the following JAR files in your Java program's classpath For example, adding below XML snippet in pom.xml will download four JAR files When you add poi-ooxml JAR as dependency via Maven, it will also add other required dependencies by itself. You need to include the poi-ooxml jar in your project, along with the dependencies for it. xlsx format) are in a different Jar file. XSSFWorkBook and HSSFWorkBook.īy the way, as Norbert pointed out, The classes for OOXML format (such as XSSF for reading. If you are only concerned about reading Excel files then at-least remember XSSF and HSSF classes e.g. It's very important that you know full form of these acronyms, otherwise it would be difficult to keep track of which implementation is for which format. DDF (Dreadful Drawing Format) – Apache POI package for decoding the Microsoft Office Drawing format.HPBF (Horrible PuBlisher Format) – Apache's pure Java implementation for Microsoft Publisher files.HSLF (Horrible Slide Layout Format) – a pure Java implementation for Microsoft PowerPoint files.HPSF (Horrible Property Set Format) – For reading “Document Summary” information from Microsoft Office files.HDGF (Horrible DiaGram Format) – One of the first pure Java implementation for Microsoft Visio binary files.HSMF (Horrible Stupid Mail Format) – pure Java implementation for Microsoft Outlook MSG files.HWPF (Horrible Word Processor Format) – to read and write Microsoft Word 97 (DOC) format files.HSSF (Horrible SpreadSheet Format) – Use to read and write Microsoft Excel (XLS) format files.XSSF (XML SpreadSheet Format) – Used to reading and writing Open Office XML (XLSX) format files.One interesting thing with POI is that (I don't know whether it's intentional, accidentally or real) it has got some really funny names for its workbook implementations like Apache POI also provides different implementation classes to handle both XLS and XLSX file format. It uses terms like workbook, worksheet, cell, row to keep itself aligned with Microsoft Excel and that's why it is very easy to use. MS Office 20).įortunately Apache POI supports both format, and you can easily create, read, write and update Excel files using this library. XLSX (created by Microsoft Office 2007 onwards e.g. XLS (produced by Microsoft Officer version prior to 2007 e.g. In this article, we will learn how to read and write excel files in Java.Īs I said, Excel files has two popular format. You can find lot of examples of how to do with Excel using Apache POI online, which means you will never feel alone and has instant Google support if you stuck there. It is widely used, has strong community support and it is feature rich. Fortunately there are couple of open source library exists to read and write Microsoft Office XLS and XLSX file format, Apache POI is the best one. Since JDK doesn't provide direct API to read and write Microsoft Excel and Word document, you have to rely on third party library to do your job. If you are using JSP Servlet, display tag library automatically provides Excel, Word and PDF support. What this mean to a Java application developer? Because of huge popularity of MS office products you often need to support Microsoft office format such as word, Excel, PowerPoint and additionally Adobe PDF. Other alternatives like OpenOffice and LiberOffice have failed to take off to challenge MS Office. No matter how Microsoft is doing in comparison with Google, Microsoft Office is still the most used application in software world. ![]()
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