thymeleaf check object property is if null or empty using combine chain code example

Example 1: thymeleaf is string empty

<p th:text="${#strings.isEmpty(string)}"></p>
<p th:text="${#strings.isEmpty(nullString)}"></p>
<p th:text="${#strings.defaultString(emptyString,'Empty String')}"></p>

Example 2: thymeleaf if string empty

<div th:if= "${searchResults.results != ''}">