Add XMP metadata automatically, based on the PDF metadata : Metadata « PDF « Java Tutorial

1. Java Tutorial
2. PDF
3. Metadata

import java.io.FileOutputStream;

import com.lowagie.text.Document;
import com.lowagie.text.Paragraph;
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.addTitle("title");
    document.addSubject("subject");
    document.addKeywords("keywords");
    document.addCreator("creator");
    document.addAuthor("author");
    writer.createXmpMetadata();
    document.open();
    document.add(new Paragraph("Hello World"));
    document.close();
  }
}