Java tutorial
import java.io.FileOutputStream; import com.lowagie.text.Document; import com.lowagie.text.Paragraph; import com.lowagie.text.pdf.PdfAcroForm; import com.lowagie.text.pdf.PdfWriter; public class MainClass { public static void main(String[] args) throws Exception { Document document = new Document(); PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("2.pdf")); document.open(); document.add(new Paragraph("This is a message.")); PdfAcroForm acroForm = writer.getAcroForm(); acroForm.addSignature("yoursig", 73, 705, 149, 759); document.close(); } }