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Import form data into PDF
Merge Form Data File (FDF) to PDF Forms in Java
To import XFDF into FDF, then merge data from FDF into PDF
// Import annotations from XFDF to FDF
FDFDoc fdf_doc = FDFDoc.createFromXFDF(xfdf_filename);
// Optionally read XFDF from a string
FDFDoc fdf_doc = FDFDoc.createFromXFDF(xfdf_string);
// Merge FDF data into PDF doc
PDFDoc doc = new PDFDoc(filename);
doc.fdfMerge(fdf_doc);PDF Form fill and form data extraction
Full sample code which illustrates basic FDF merge/extract functionality and full support for FDF (Forms Data Format)
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