OpenXLS is the open source version of ExtenXLS -- a best-in-class Java spreadsheet SDK that allows you to read, modify and create Excel-compatible spreadsheets from your Java applications.
Supports Excel 97-2012 file formats.
Features
- Reads and Writes Excel 97-2012 Spreadsheet Files
- High Performance, Easy to Use API
- All-Java Spreadsheet Engine
- 200+ Formulas Supported -- Accurate High Speed Calculation
- 20 Charts
- Supports PivotTables, Charts, Images, Tables, Row/Col Grouping, Sheet Hiding, Password Protection and much more!
License
GNU Library or Lesser General Public License version 3.0 (LGPLv3)
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User Reviews
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Give a sample program for pivot operation
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For a more recent build and active maintenance look at: github.com/vertex-github/openxls
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very strong spreadsheet sdk does everything you need. excellent support for formulas and complex excel files.