Java tutorial
import java.io.FileOutputStream; import com.lowagie.text.Chunk; import com.lowagie.text.Document; import com.lowagie.text.Image; import com.lowagie.text.PageSize; import com.lowagie.text.Phrase; import com.lowagie.text.pdf.Barcode39; import com.lowagie.text.pdf.BarcodePostnet; import com.lowagie.text.pdf.PdfContentByte; import com.lowagie.text.pdf.PdfWriter; public class BarcodesPostnet { public static void main(String[] args) { Document document = new Document(PageSize.A4, 50, 50, 50, 50); try { PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("BarcodesPostnet.pdf")); document.open(); PdfContentByte cb = writer.getDirectContent(); BarcodePostnet codePost = new BarcodePostnet(); codePost.setCode("123451234"); Image imagePost = codePost.createImageWithBarcode(cb, null, null); document.add(new Phrase(new Chunk(imagePost, 0, 0))); } catch (Exception de) { de.printStackTrace(); } document.close(); } }