document level JavaScript : Action « PDF « Java Tutorial

1. Java Tutorial
2. PDF
3. 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.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();
    writer.addJavaScript("function saySomething(s) {app.alert(s)}", false);
    writer.setAdditionalAction(PdfWriter.DOCUMENT_CLOSE, PdfAction.javaScript(
        "saySomething('hi');\r", writer));
    document.add(new Paragraph("PDF document with a JavaScript function."));
    document.close();
  }
}