contentStream.drawString( "Go to Document->File Attachments to View Embedded Files" );
contentStream.endText();
contentStream.close();
//embedded files are stored in a named tree
PDEmbeddedFilesNameTreeNode efTree = new PDEmbeddedFilesNameTreeNode();
//first create the file specification, which holds the embedded file
PDComplexFileSpecification fs = new PDComplexFileSpecification();
fs.setFile( "Test.txt" );
//create a dummy file stream, this would probably normally be a FileInputStream
byte[] data = "This is the contents of the embedded file".getBytes("ISO-8859-1");
ByteArrayInputStream fakeFile =
new ByteArrayInputStream( data );
PDEmbeddedFile ef = new PDEmbeddedFile(doc, fakeFile );
//now lets some of the optional parameters
ef.setSubtype( "test/plain" );
ef.setSize( data.length );
ef.setCreationDate( new GregorianCalendar() );
fs.setEmbeddedFile( ef );
// create a new tree node and add the embedded file
PDEmbeddedFilesNameTreeNode treeNode = new PDEmbeddedFilesNameTreeNode();
treeNode.setNames( Collections.singletonMap( "My first attachment", fs ) );
// add the new node as kid to the root node
List<PDEmbeddedFilesNameTreeNode> kids = new ArrayList<PDEmbeddedFilesNameTreeNode>();
kids.add(treeNode);
efTree.setKids(kids);
// add the tree to the document catalog