Анотирайте PDF от Java

// Create an instance of Reply class and add comments
Reply firstReply = new Reply();
firstReply.setComment("First comment");
firstReply.setRepliedOn(Calendar.getInstance().getTime());

Reply secondReply = new Reply();
secondReply.setComment("Second comment");
secondReply.setRepliedOn(Calendar.getInstance().getTime());

List<Reply> replies = new ArrayList<Reply>();
replies.add(firstReply);
replies.add(secondReply);

// Create an instance of AreaAnnotation class and set options
AreaAnnotation area = new AreaAnnotation();
area.setBackgroundColor(65535);
area.setBox(new Rectangle(100, 100, 100, 100));
area.setCreatedOn(Calendar.getInstance().getTime());
area.setMessage("This is area annotation");
area.setOpacity(0.7);
area.setPageNumber(0);
area.setPenColor(65535);
area.setPenStyle(PenStyle.Dot);
area.setPenWidth((byte) 3);
area.setReplies(replies);

// Create an instance of Annotator class
Annotator annotator = new Annotator("input.bmp");

// Add annotation
annotator.add(area);

// Save to file
annotator.save("output.bmp");
annotator.dispose();

// Create an instance of Annotator class 
Annotator annotator = new Annotator("C://input.bmp");

// Remove annotation by set type None 
SaveOptions saveOptions = new SaveOptions();
saveOptions.setAnnotationTypes(AnnotationType.None);

// Save annotation to output file
annotator.save("C://output.bmp", saveOptions);
annotator.dispose();

String outputPath = "UpdateAnnotation.bmp";

// Create an instance of Annotator class
Annotator annotator = new Annotator("input.bmp");

// Create an instance of Reply class for first example and add comments
Reply reply1 = new Reply();
reply1.setComment("Original first comment");
reply1.setRepliedOn(Calendar.getInstance().getTime());

Reply reply2 = new Reply();
reply2.setComment("Original second comment");
reply2.setRepliedOn(Calendar.getInstance().getTime());

java.util.List replies = new ArrayList();
replies.add(reply1);
replies.add(reply2);

// Create an instance of AreaAnnotation class and set options
AreaAnnotation original = new AreaAnnotation();
original.setId(1);
original.setBackgroundColor(65535);
original.setBox(new Rectangle(100, 100, 100, 100));
original.setCreatedOn(Calendar.getInstance().getTime());
original.setMessage("This is original annotation");
original.setReplies(replies);

// Add original annotation
annotator.add(original);
annotator.save(outputPath);
annotator.dispose();

LoadOptions loadOptions = new LoadOptions();

// Open annotated document
Annotator annotator1 = new Annotator(outputPath, loadOptions);

// Create an instance of Reply class for update first example
Reply reply3 = new Reply();
reply3.setComment("Updated first comment");
reply3.setRepliedOn(Calendar.getInstance().getTime());

Reply reply4 = new Reply();
reply4.setComment("Updated second comment");
reply4.setRepliedOn(Calendar.getInstance().getTime());

java.util.List replies1 = new ArrayList();
replies1.add(reply3);
replies1.add(reply4);

// Suggest we want change some properties of existed annotation
AreaAnnotation updated = new AreaAnnotation();
updated.setId(1);
updated.setBackgroundColor(255);
updated.setBox(new Rectangle(0, 0, 50, 200));
updated.setCreatedOn(Calendar.getInstance().getTime());
updated.setMessage("This is updated annotation");
updated.setReplies(replies1);

// Update and save annotation
annotator1.update(updated);
annotator1.save(outputPath);
annotator1.dispose();

// For using this example input file ("annotated.bmp") must be with annotations
LoadOptions loadOptions = new LoadOptions();

// Create an instance of Annotator class and get annotations
final Annotator annotator = new Annotator("annotated.bmp", loadOptions);
List annotations = annotator.get();