GroupDocs.Annotation for Java for Java 23.8

try(final Annotator annotator = new Annotator(Constants.INPUT_PDF)) {
    // Instantiate a ButtonComponent and set its properties
    ButtonComponent buttonComponent = new ButtonComponent();
    buttonComponent.setCreatedOn(new Date()); // Set the creation date
    buttonComponent.setStyle(BorderStyle.DASHED); // Set border style to dashed
    buttonComponent.setMessage("This is button component"); // Set the button's label text
    buttonComponent.setBorderColor(1422623); // Set the border color
    buttonComponent.setPenColor(14527697); // Set the pen (frame) color
    buttonComponent.setButtonColor(10832612); // Set the button's fill color
    buttonComponent.setPageNumber(0); // Specify the page number where the button will be placed
    buttonComponent.setBorderWidth(12); // Set the width of the button border
    buttonComponent.setBox(new Rectangle(100, 300, 90, 30)); // Set the position and size of the button

    // Add comments (replies) to the button
    Reply reply1 = new Reply();
    reply1.setComment("First comment");
    reply1.setRepliedOn(new Date());

    Reply reply2 = new Reply();
    reply2.setComment("Second comment");
    reply2.setRepliedOn(new Date());

    List<Reply> replies = new ArrayList<>();
    replies.add(reply1);
    replies.add(reply2);

    buttonComponent.setReplies(replies); // Attach the replies to the button

    // Add the button component to the document
    annotator.add(buttonComponent);

    // Save the modified document with the button component
    annotator.save("result_button_component.pdf");
}

try(final Annotator annotator = new Annotator(Constants.INPUT_PDF)) {
    // Instantiate a CheckBoxComponent and set its properties
    CheckBoxComponent checkbox = new CheckBoxComponent();
    checkbox.setChecked(true); // Set the checkbox as checked
    checkbox.setBox(new Rectangle(100, 100, 100, 100)); // Set the position and size of the checkbox
    checkbox.setPenColor(65535); // Set the pen (frame) color
    checkbox.setStyle(BoxStyle.STAR); // Set the checkbox style (e.g., star-shaped)

    // Add comments (replies) to the checkbox
    Reply reply1 = new Reply();
    reply1.setComment("First comment");
    reply1.setRepliedOn(new Date());

    Reply reply2 = new Reply();
    reply2.setComment("Second comment");
    reply2.setRepliedOn(new Date());

    List<Reply> replies = new ArrayList<>();
    replies.add(reply1);
    replies.add(reply2);

    checkbox.setReplies(replies); // Attach the replies to the checkbox

    // Add the checkbox component to the document
    annotator.add(checkbox);

    // Save the modified document with the checkbox component
    annotator.save("result_checkbox_component.pdf");
}

try(final Annotator annotator = new Annotator(Constants.INPUT_PDF)) {
    // Instantiate a DropdownComponent and set its properties
    DropdownComponent dropdownComponent = new DropdownComponent();
    dropdownComponent.setOptions(new ArrayList<>(Arrays.asList("Item1", "Item2", "Item3"))); // Set dropdown options
    dropdownComponent.setSelectedOption(null); // No option selected by default
    dropdownComponent.setPlaceholder("Choose option"); // Set placeholder text
    dropdownComponent.setBox(new Rectangle(100, 100, 100, 100)); // Set the position and size of the dropdown
    dropdownComponent.setCreatedOn(new Date()); // Set the creation date
    dropdownComponent.setMessage("This is dropdown component"); // Set the dropdown's label text
    dropdownComponent.setPageNumber(0); // Specify the page number
    dropdownComponent.setPenColor(65535); // Set the pen (frame) color
    dropdownComponent.setPenStyle(PenStyle.DOT); // Set the frame line style (dotted)
    dropdownComponent.setPenWidth((byte) 3); // Set the frame line width in pixels

    // Add comments (replies) to the dropdown
    List<Reply> replies = new ArrayList<>();
    Reply reply1 = new Reply();
    reply1.setComment("First comment");
    reply1.setRepliedOn(new Date());

    Reply reply2 = new Reply();
    reply2.setComment("Second comment");
    reply2.setRepliedOn(new Date());

    replies.add(reply1);
    replies.add(reply2);

    dropdownComponent.setReplies(replies); // Attach the replies to the dropdown

    // Add the dropdown component to the document
    annotator.add(dropdownComponent);

    // Save the modified document with the dropdown component
    annotator.save("result_dropdown_component.pdf");
}