Add Fillable Forms to Word in Java

import com.spire.doc.*;
import com.spire.doc.documents.Paragraph;
import com.spire.doc.documents.ParagraphStyle;
import com.spire.doc.documents.VerticalAlignment;
import com.spire.doc.fields.CheckBoxFormField;
import com.spire.doc.fields.DropDownFormField;
import com.spire.doc.fields.TextFormField;

public class CreateFormFields {

    public static void main(String[] args) {

        //create a Word document and add a section
        Document doc = new Document();
        Section section = doc.addSection();

        //add a table
        Table table = section.addTable();
        table.resetCells(3,2);

        //add text to the cells of the first column
        Paragraph paragraph = table.getRows().get(0).getCells().get(0).addParagraph();
        paragraph.appendText("Text Form Field");
        paragraph = table.getRows().get(1).getCells().get(0).addParagraph();
        paragraph.appendText("Check Box Form Field");
        paragraph = table.getRows().get(2).getCells().get(0).addParagraph();
        paragraph.appendText("Drop Down Form Field");

        //add a text form to the specific cell
        paragraph = table.getRows().get(0).getCells().get(1).addParagraph();
        TextFormField textField = (TextFormField) paragraph.appendField("textbox", FieldType.Field_Form_Text_Input);
        textField.setTextFieldType(TextFormFieldType.Regular_Text);

        //add a checkbox form to the specific cell
        paragraph = table.getRows().get(1).getCells().get(1).addParagraph();
        CheckBoxFormField checkboxField = (CheckBoxFormField)paragraph.appendField("checkbox", FieldType.Field_Form_Check_Box);

        //add a dropdown-list form to the specific cell
        paragraph = table.getRows().get(2).getCells().get(1).addParagraph();
        DropDownFormField dropdownField = (DropDownFormField)paragraph.appendField("listbox",FieldType.Field_Form_Drop_Down);
        dropdownField.getDropDownItems().add("Canada");
        dropdownField.getDropDownItems().add("United States");
        dropdownField.getDropDownItems().add("Other");

        //create a ParagraphStyle object
        ParagraphStyle style = new ParagraphStyle(doc);
        style.setName("newFont");
        style.getCharacterFormat().setFontName("Calibri");
        style.getCharacterFormat().setFontSize(13);
        doc.getStyles().add(style);

        for (int i = 0; i < table.getRows().getCount(); i++) {

            //set row height
            table.getRows().get(i).setHeight(30f);
            for (Object cell:table.getRows().get(i).getCells()){
                if (cell instanceof TableCell)
                {
                    //set the vertical alignment of each cell to middle
                    ((TableCell) cell).getCellFormat().setVerticalAlignment(VerticalAlignment.Middle);

                    //apply paragraph style to each cell
                    ((TableCell) cell).getParagraphs().get(0).applyStyle(style.getName());
                }
            }
        }

        //save to file
        doc.saveToFile("output/AddFormFields.docx", FileFormat.Docx_2013);
    }
}