I am adding new metadata with stamper
PdfReader reader = new PdfReader("ped.pdf");
PdfStamper stamper =
new PdfStamper(reader, new FileOutputStream("ped.pdf"));
HashMap<String, String> info = reader.getInfo();
System.out.println(info.get("Keywords"));
System.out.println(info.get("Keywords"));
System.out.println(info.get("Keywords"));
info.put("Title", "Hello World stamped");
info.put("Subject", "Hello World with changed metadata");
info.put("Keywords", "iText nicolas conde");
info.put("Creator", "nicolas conde");
info.put("Author", "nicolas conde");
stamper.setMoreInfo(info);
stamper.close();
this code is full build
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