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Document level JavaScript

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();   } }