Java/PDF RTF/Form Fill

Fill in a simple registration form

import java.io.FileOutputStream;
import com.lowagie.text.pdf.AcroFields;
import com.lowagie.text.pdf.PdfReader;
import com.lowagie.text.pdf.PdfStamper;
// SimpleRegistrationForm.pdf is from http://itextdocs.lowagie.ru/tutorial/ 
/**
 * Fill in a simple registration form.
 */
public class FormFillPDF {
  public static void main(String[] args) {
    try {
      PdfReader reader = new PdfReader("SimpleRegistrationForm.pdf");
      // filling in the form
      PdfStamper stamp1 = new PdfStamper(reader, new FileOutputStream("FormFillPDF.pdf"));
      AcroFields form1 = stamp1.getAcroFields();
      form1.setField("name", "your name");
      form1.setField("address", "Your Address");
      form1.setField("postal_code", "1111");
      form1.setField("email", "email");
      stamp1.close();
    } catch (Exception de) {
      de.printStackTrace();
    }
  }
}

Form Fill and Make it Flatten

import java.io.FileOutputStream;
import com.lowagie.text.pdf.AcroFields;
import com.lowagie.text.pdf.PdfReader;
import com.lowagie.text.pdf.PdfStamper;
public class FormFillAndMakeItFlattenPDF {
    public static void main(String[] args) {
        try {
            PdfReader reader = new PdfReader("SimpleRegistrationForm.pdf");
            PdfStamper stamp2 = new PdfStamper(reader, new FileOutputStream("FormFillAndMakeItFlattenPDF.pdf"));
            AcroFields form2 = stamp2.getAcroFields();
            form2.setField("name", "your name");
            form2.setField("address", "address");
            form2.setField("postal_code", "code");
            form2.setField("email", "youremail");
            stamp2.setFormFlattening(true);
            stamp2.close();
        }
        catch (Exception de) {
            de.printStackTrace();
        }
    }
}

Form Signature

import java.io.FileOutputStream;
import java.io.IOException;
import com.lowagie.text.Document;
import com.lowagie.text.DocumentException;
import com.lowagie.text.PageSize;
import com.lowagie.text.Paragraph;
import com.lowagie.text.pdf.PdfAcroForm;
import com.lowagie.text.pdf.PdfWriter;
public class FormSignaturePDF {
  public static void main(String[] args) {
    Document document = new Document(PageSize.A4);
    try {
      PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("FormSignaturePDF.pdf"));
      document.open();
      PdfAcroForm acroForm = writer.getAcroForm();
      document.add(new Paragraph("Hello World"));
      acroForm.addSignature("sig", 73, 705, 149, 759);
    } catch (Exception e) {
      System.err.println(e.getMessage());
    }
    document.close();
  }
}