Java/PDF RTF/Watermark

Add Watermark Image to an Existing PDF File

   <source lang="java">

import java.io.FileOutputStream; import java.util.HashMap; import com.lowagie.text.Element; import com.lowagie.text.Image; import com.lowagie.text.PageSize; import com.lowagie.text.pdf.BaseFont; import com.lowagie.text.pdf.PdfContentByte; import com.lowagie.text.pdf.PdfReader; import com.lowagie.text.pdf.PdfStamper; public class AddWatermarkImageToAnExistingPDFFile {

   public static void main(String[] args) {
       try {
           PdfReader reader = new PdfReader("YourOwnPDF.pdf");
           int n = reader.getNumberOfPages();
           PdfStamper stamp = new PdfStamper(reader, new FileOutputStream("NewPDFWithWatermarkImage.pdf"));
           int i = 0;
           PdfContentByte under;
           Image img = Image.getInstance("logo.png");
           img.setAbsolutePosition(200, 400);
           while (i < n) {
             i++;
             under = stamp.getUnderContent(i);
             under.addImage(img);
           }
           stamp.close();
       }
       catch (Exception de) {
           de.printStackTrace();
       }
   }

}

      </source>