event for closing : Document Action « PDF « Java Tutorial

1. Java Tutorial
2. PDF
3. Document Action

import java.io.FileOutputStream;

import com.lowagie.text.Document;
import com.lowagie.text.Paragraph;
import com.lowagie.text.pdf.PdfAction;
import com.lowagie.text.pdf.PdfContentByte;
import com.lowagie.text.pdf.PdfDestination;
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.open();

    document.add(new Paragraph("event for closing"));
    writer.setAdditionalAction(PdfWriter.DOCUMENT_CLOSE, PdfAction.javaScript(
        "app.alert('Thank you for reading this document.');\r", writer));


    
    document.close();
  }
}