What is HSSF in Apache POI?

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. HSSF and XSSF provides ways to read spreadsheets create, modify, read and write XLS spreadsheets.

What is the difference between XSSFWorkbook and HSSFWorkbook?

HSSFWorkbook − This class has methods to read and write Microsoft Excel files in . xls format. It is compatible with MS-Office versions 97-2003. XSSFWorkbook − This class has methods to read and write Microsoft Excel and OpenOffice xml files in .

What is XSSFWorkbook?

XSSFWorkbook. It is a class that is used to represent both high and low level Excel file formats. It belongs to the org.

What is the use of POI jar?

Apache POI is a popular API that allows programmers to create, modify, and display MS Office files using Java programs. It is an open source library developed and distributed by Apache Software Foundation to design or modify Microsoft Office files using Java program.

What does HSSF stand for?

Horrible SpreadSheet Format
HSSF (Horrible SpreadSheet Format) – reads and writes Microsoft Excel (XLS) format files. It can read files written by Excel 97 onwards; this file format is known as the BIFF 8 format.

What is the difference between xlsx and XLS?

XLS vs XLSX: File Format XLS is the default file format from Excel 97 to Excel 2003 while XLSX is the default file format for Excel 2007 and later. Tip: . xls is also the file extension for Microsoft Excel 5.0/95 Wordbook. .xlsx is also the file extension for Script Open XML Spreadsheet.

Is Apache POI free to use?

The POI project is OpenSource and developed/distributed under the Apache Software License v2. Unlike some other licenses, the Apache license allows free open source development.

What is POI ooxml?

Apache POI provides Java API for manipulating various file formats based on the Office Open XML (OOXML) standard and OLE2 standard from Microsoft. Apache POI releases are available under the Apache License (V2. 0).

What is Apache POI?

Apache POI, a project run by the Apache Software Foundation, and previously a sub-project of the Jakarta Project, provides pure Java libraries for reading and writing files in Microsoft Office formats, such as Word, PowerPoint and Excel .

Can I change charts in poi using HSSF?

HSSF (largely) doesn’t support changing Charts. You can however create a chart in Excel using Named ranges, modify the chart data values using HSSF and write a new spreadsheet out. This is possible because POI attempts to keep existing records intact as far as possible.

What is companion to hssfworkbook (poifsfilesystem)?

Companion to HSSFWorkbook (POIFSFileSystem), this constructs the POI filesystem around your InputStream. Given a POI POIFSFileSystem object, read in its Workbook along with all related nodes, and populate the high and low level models.

What is sxssf API in poi?

Since 3.8-beta3, POI provides a low-memory footprint SXSSF API built on top of XSSF. SXSSF is an API-compatible streaming extension of XSSF to be used when very large spreadsheets have to be produced, and heap space is limited.