Set meta data to pdf document : Metadata « PDF « Java Tutorial

1. Java Tutorial
2. PDF
3. Metadata

import java.io.ByteArrayOutputStream;
import java.io.FileOutputStream;
import java.util.HashMap;

import com.lowagie.text.Document;
import com.lowagie.text.Paragraph;
import com.lowagie.text.pdf.PdfReader;
import com.lowagie.text.pdf.PdfStamper;
import com.lowagie.text.pdf.PdfWriter;
import com.lowagie.text.xml.xmp.XmpWriter;

public class MainClass {

  public static void main(String[] args) throws Exception {
    Document document = new Document();
    PdfWriter.getInstance(document, new FileOutputStream("2.pdf"));
    document.open();
    document.add(new Paragraph("Hello World"));
    document.close();
    PdfReader reader = new PdfReader("2.pdf");
    System.out.println("Tampered? " + reader.isTampered());
    PdfStamper stamper = new PdfStamper(reader, new FileOutputStream("2.pdf"));
    HashMap info = reader.getInfo();
    info.put("Subject", "subject");
    info.put("Author", "author");
    info.put("Keywords", "keywords");
    info.put("Title", "title");
    info.put("Creator", "creator");
    stamper.setMoreInfo(info);
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    XmpWriter xmp = new XmpWriter(baos, info);
    xmp.close();
    stamper.setXmpMetadata(baos.toByteArray());
    stamper.close();
  }
}