file open library

“Table 2.13. Common file formats

File format. MIME type. Open source library. Remarks

Text plain/text Built-in

Microsoft Office (Word, PowerPoint, Excel)application/msword, application/vnd.ms-excel.

Apache POI Open Office textmining.org

textmining.org is for MS Word only.

Adobe Portable Document Format (PDF) application/pdf PDFBox

Text can’t be extracted from image-based PDFs without first using optical character recognition.

Rich Text Format (RTF) application/rtf Built-in to Java using RTFEditorKit  

HTML text/html JTidy  CyberNeko.   Many others

 

XML text/xml Many XML libraries available (Apache Xerces is popular)

Most applications should use SAX-based parsing instead of DOM-based to avoid creating duplicate data structures.”

this. article is from Grant S. Ingersoll, Thomas S. Morton, Andrew L. Farris. “Taming Text.” iBooks.