I'm tying to incorporate client-side validations using struts validator. I've downloaded all related .jar files and placed them in /WEB-INF/lib. I'm using commons-validator.jar (1.0.2). When I'm trying to display the. jsp page in web browser. it's showing some HTML tags as mentioned below: <input type="text" n and in the console the exception thrown is: javax.servlet.ServletException: org/apache/struts/util/MessageResources at org.apache.jasper.runtime.PageContextImpl.handlePageException(PageCon textImpl.java:536) And when I remove the statement "<validator:javascript formName="supportviewForm"/>" from the .jsp page, it's displayed perfectly in the browser. What could be the reason? Is there any version conflict? When I searched in the forums, I found that this error could be because incorrect version of commons-validator.jar. But I downloaded 1.0.2 and am using that only. Any help is much appreciated.