Java/PDF RTF/Chapter Bookmarks

Chapter Section Set Bookmark Open

import java.awt.Color;
import java.io.FileOutputStream;
import com.lowagie.text.Chapter;
import com.lowagie.text.Chunk;
import com.lowagie.text.Document;
import com.lowagie.text.Element;
import com.lowagie.text.Font;
import com.lowagie.text.FontFactory;
import com.lowagie.text.PageSize;
import com.lowagie.text.Paragraph;
import com.lowagie.text.Section;
import com.lowagie.text.pdf.PdfWriter;
public class ChapterSectionSetBookmarkOpenPDF {
  public static void main(String[] args) {
    Document document = new Document(PageSize.A4, 50, 50, 50, 50);
    try {
      PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("ChapterSectionSetBookmarkOpenPDF.pdf"));
      writer.setViewerPreferences(PdfWriter.PageModeUseOutlines);
      document.open();
      Font chapterFont = FontFactory.getFont(FontFactory.HELVETICA, 24, Font.NORMAL, new Color(255, 0, 0));
      Font sectionFont = FontFactory.getFont(FontFactory.HELVETICA, 20, Font.NORMAL, new Color(0, 0, 255));
      Font subsectionFont = FontFactory.getFont(FontFactory.HELVETICA, 18, Font.BOLD, new Color(0, 64, 64));
      Paragraph paragraph1 = new Paragraph("text 1");
      Paragraph paragraph2 = new Paragraph("text 2");
      Paragraph cTitle = new Paragraph("This is a chapter ", chapterFont);
      Chapter chapter = new Chapter(cTitle, 1);
      paragraph2.setAlignment(Element.ALIGN_JUSTIFIED);
      paragraph1.setAlignment(Element.ALIGN_JUSTIFIED);
      chapter.add(paragraph1);
      
      Paragraph sTitle = new Paragraph("This is section 1 in chapter 1" , sectionFont);
      Section section = chapter.addSection(sTitle, 1);
      section.add(paragraph1);
      section.setBookmarkOpen(false);
      
      Paragraph subTitle = new Paragraph("This is subsection 1 of section 1", subsectionFont);
      Section subsection = section.addSection(subTitle, 3);
      
      document.add(chapter);
    } catch (Exception de) {
      de.printStackTrace();
    }
    document.close();
  }
}