package com.aspose.pdf.examples.AsposePdfExamples.Attachments; import com.aspose.pdf.Document; import com.aspose.pdf.FileSpecification; public class AddAttachmentToPDF { public static void main(String[] args) { // Open a document Document pdfDocument = new Document("input.pdf"); // Set up a new file to be added as attachment FileSpecification fileSpecification = new FileSpecification("sample.txt", "Sample text file"); // Add an attachment to document's attachment collection pdfDocument.getEmbeddedFiles().add(fileSpecification); // Save the updated document pdfDocument.save("output.pdf"); } }