Code to Make a Fillable Form in Word using Java. Refer to this link for more information: https://kb.aspose.com/words/java/how-to-make-a-fillable-form-in-word-using-java/

How to Make a Fillable Form in Word using Java.java

import com.aspose.words.BreakType;
import com.aspose.words.Document;
import com.aspose.words.DocumentBuilder;
import com.aspose.words.License;
import com.aspose.words.TextFormFieldType;

public class MakeAFillableFormInWord {

	public static void main(String[] args) throws Exception {//main function for how to make a fillable form in Word using Java

	    // Load license
	    License lic = new License();
	    lic.setLicense("Aspose.Total.lic");		

	    // Create a document
	    Document formDoc = new Document();

	    // Create a DocumentBuilder object
	    DocumentBuilder formBuilder = new DocumentBuilder(formDoc);

	    // Insert text input
	    formBuilder.insertTextInput("TxtInputControl", TextFormFieldType.REGULAR, "", "The Text Input Control", 0);
	    formBuilder.insertBreak(BreakType.LINE_BREAK);

	    // Insert checkbox
	    formBuilder.insertCheckBox("CheckBoxControl", true, true, 0);

	    // Save the document
	    formDoc.save("outputJava.docx");

	    System.out.println("Done");
	}
}