How to convert html (thymeleaf) form to Angular JS?

I have a simple web form in thymeleaf(which works) and I want to convert it to Angular js. What I should do ? All website backend written on java

<html xmlns:th="http://www.thymeleaf.org" xmlns:score="http://www.w3.org/1999/xhtml">
    <body>
       <div th:if="${message}">
        <h2 th:text="${message}"/>
    </div>
    <div>
        <form method="POST" enctype="multipart/form-data" action="/upload">
            <table>
                <tr><td>File to upload:</td><td><input type="file" name="file" /></td></tr>
                <tr><td></td><td><input type="submit" value="Upload" /></td></tr>
            </table>
        </form>
    </div>

    <div>
        <ul>
            <li th:each="file : ${files}" th:text="${file}"></li>
        </ul>
    </div>

    <div>
        <ul>
            <li th:each="file : ${destination}" th:text="${file}"></li>
        </ul>
    </div>
        <div>
        <ul>
            <li th:each="file : ${name}" th:text="${file}"></li>
        </ul>
    </div>
    </body>
    </html>