PicoXLSX4j is a small Java library to create XLSX files (Microsoft Excel 2007 or newer) in an easy and native way. It is a direct port of PicoXLSX for C#

• No need for an installation of Microsoft Office
• No need for Office interop/DCOM or other bridging libraries
• No need for 3rd party libraries
• Pure usage of standard JRE

Please have a look at the successor library NanoXLSX4j for reader support.

Project website: https://picoxlsx.rabanti.ch

See the Change Log for recent updates.

• Changed package structure to ch.rabanti.picoxlsx4j
• Added Maven support (available in Maven Central under ch.rabanti.picoxlsx4j)
• Complete replacement of the old style handling
• Added appending of styles for an easier composition of complex styles
• Added more options to assign styles to cells
• Added Shortener (property WS) to reduce the code overhead
• Added static methods for the most important formulas (round, floor, ceil, min, max, average, median, sum, vlookup)
• Added Save option to save the XLSX file as stream
• Added an option for sanitizing of worksheet names
• Replaced specific exception classes with general exceptions (e.g. StyleException, FormatException or WorksheetException)
• Added functions to retrieve stored data and the current cell address
• Many internal optimizations and additional documentation

PicoXLSX4j was initially created with Java 8 and currently build with OpenJDK 11 The only requirement for development is an up-to-date Java environment (OpenJDK 11 or higher recommended)

Simply place the PicoXLSX4j jar file (e.g. picoxlsx4j-2.6.0.jar) into the lib folder of your project and create a library reference to it in your IDE.

Place all .java files from the PicoXLSX4j source folder into your project. The folder structure defines the packages. Please use refactoring if you want to relocate the files.

Add the following information to your POM file within the <dependencies> tag:

<dependency>
    <groupId>ch.rabanti</groupId>
    <artifactId>picoxlsx4j</artifactId>
    <version>2.6.0</version>
</dependency>

Important: The version number may change. Please see the version number of Maven Central at the top of the README (maven-central badge) or check the Change Log for the most recent version. The keywords LATEST and RELEASE are only valid in Maven 2, not 3 and newer.

 Workbook workbook = new Workbook("myWorkbook.xlsx", "Sheet1");         // Create new workbook with a worksheet called Sheet1
 workbook.WS.value("Some Data");                                        // Add cell A1
 workbook.WS.formula("=A1");                                            // Add formula to cell B1
 workbook.WS.down();                                                    // Go to row 2
 workbook.WS.value(new Date(), BasicStyles.Bold());                     // Add formatted value to cell A2
 try{
   workbook.save();                                                     // Save the workbook as myWorkbook.xlsx
 } catch (Exception ex) {}

 Workbook workbook = new Workbook("myWorkbook.xlsx", "Sheet1");       // Create new workbook with a worksheet called Sheet1
 workbook.getCurrentWorksheet().addNextCell("Some Data");             // Add cell A1
 workbook.getCurrentWorksheet().addNextCell(42);                      // Add cell B1
 workbook.getCurrentWorksheet().goToNextRow();                        // Go to row 2
 workbook.getCurrentWorksheet().addNextCell(new Date());              // Add cell A2
 try {
   workbook.Save();                                                   // Save the workbook as myWorkbook.xlsx
 } catch (Exception ex) {}

See the full **API-Documentation at: https://rabanti-github.github.io/PicoXLSX4j/. The Demo class contains 13 simple use cases. You can also look at the full API documentation or the Javadoc annotations in the particular .java files.