Spring mvc 3.2: NoClassDefFoundError: java/util/Deque <p>On processing get request to my @Controller method i get</p> <pre><code> 2013-01-10 18:16:44,871 INFO [STDOUT] 2013-01-10 18:16:44 [http-0.0.0.0-8080-53] DEBUG org.springframework.web.servlet.DispatcherServlet.processRequest - Could not complete request org.springframework.web.util.NestedServletException: Handler processing failed; nested exception is java.lang.NoClassDefFoundError: java/util/Deque at org.springframework.web.servlet.DispatcherServlet.triggerAfterCompletionWithError(DispatcherServlet.java:1259) ~[spring-webmvc-3.2.0.RELEASE.jar:3.2.0.RELEASE] at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:945) ~[spring-webmvc-3.2.0.RELEASE.jar:3.2.0.RELEASE] at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856) ~[spring-webmvc-3.2.0.RELEASE.jar:3.2.0.RELEASE] at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:915) [spring-webmvc-3.2.0.RELEASE.jar:3.2.0.RELEASE] at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:811) [spring-webmvc-3.2.0.RELEASE.jar:3.2.0.RELEASE] at javax.servlet.http.HttpServlet.service(HttpServlet.java:734) [javaee.jar:9.1] at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:796) [spring-webmvc-3.2.0.RELEASE.jar:3.2.0.RELEASE] at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) [javaee.jar:9.1] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.5.0_25] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) ~[na:1.5.0_25] </code></pre> <p>I use spring 3.2, java 5, jboss 4.2</p> <p><strong>EDIT</strong> Problem was in thymeleaf and not in spring</p>