iText concatenation et remplissage de formulaire

J'ai trouvé comment faire :
il faut utiliser la version itext-2.2.4.jar

puis voici le code de test :
Code:
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import java.io.ByteArrayOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.Writer;
import java.util.ArrayList;
import java.util.Iterator;
 
import com.lowagie.text.Document;
import com.lowagie.text.DocumentException;
import com.lowagie.text.List;
import com.lowagie.text.pdf.AcroFields;
import com.lowagie.text.pdf.PdfCopy;
import com.lowagie.text.pdf.PdfReader;
import com.lowagie.text.pdf.PdfSmartCopy;
import com.lowagie.text.pdf.PdfStamper;
import com.lowagie.text.pdf.PdfWriter;
 
 
public class testForm {
 
	private static String PATH = "C://";
	private static String FILENAME = "formulaireSource.pdf";
 
	public static void main(String[] args) {
		Document document = new Document();
		  try {
		          ArrayList agreements = new ArrayList(); 			               agreements.add("A");
			  agreements.add("B");
			  agreements.add("C");
 
		    ByteArrayOutputStream baos;
		    PdfReader reader;
		    String data = null;
 
		    PdfSmartCopy copy = new PdfSmartCopy(document,
		      new FileOutputStream(PATH + "resultat.pdf"));
		    document.open();
		    for (Iterator it = agreements.iterator(); it.hasNext(); ) {
		      data = (String)it.next();
		      baos = new ByteArrayOutputStream();
		      remplirForm(baos, data);
		      reader = new PdfReader(baos.toByteArray());
		      copy.addPage(copy.getImportedPage(reader, 1));
		    }
		  } catch (IOException e) {
		    e.printStackTrace();
		  } catch (DocumentException e) {
		    e.printStackTrace();
		  }
		  document.close();
		}
 
	public static void remplirForm(OutputStream stream, String data)
	  throws IOException, DocumentException {
	  PdfReader reader = new PdfReader(PATH+FILENAME);
	  PdfStamper stamper = new PdfStamper(reader, stream);
 
	  AcroFields champs = stamper.getAcroFields();
	  champs.setField("champ1", data);
	  stamper.setFormFlattening(true);
	  stamper.close();
	}
}