Is it possible to modify PDF Form Field Names?

Question

Here\'s the situation. I have a PDF with automatically generated pdf form field names. The problem is that these names are not very user friendly. They look something like :

Answer 1

Here is a java example found in the book, "iText in Action"

This is taken from their example source code for the book and helped me immensely with this same issue. part2.chapter06.ConcatenateForms2

public static void main(String[] args)
    throws IOException, DocumentException {
    // Create a PdfCopyFields object
    PdfCopyFields copy
        = new PdfCopyFields(new FileOutputStream(RESULT));
    // add a document
    PdfReader reader1 = new PdfReader(renameFieldsIn(DATASHEET, 1));
    copy.addDocument(reader1);
    // add a document
    PdfReader reader2 = new PdfReader(renameFieldsIn(DATASHEET, 2));
    copy.addDocument(reader2);
    // Close the PdfCopyFields object
    copy.close();
    reader1.close();
    reader2.close();
}


private static byte[] renameFieldsIn(String datasheet, int i)
    throws IOException, DocumentException {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    // Create the stamper
    PdfStamper stamper = new PdfStamper(new PdfReader(datasheet), baos);
    // Get the fields
    AcroFields form = stamper.getAcroFields();
    // Loop over the fields
    Set keys = new HashSet(form.getFields().keySet());
    for (String key : keys) {
        // rename the fields
        form.renameField(key, String.format("%s_%d", key, i));
    }
    // close the stamper
    stamper.close();
    return baos.toByteArray();
}