java.lang.ClassCastException: org.apache.struts.action.ActionMessage cannot be cast to org.apache.st

hi ,

I am trying to validate my page for null value , it is giving following error ...Please suggest ASAP

java.lang.ClassCastException: org.apache.struts.action.ActionMessage cannot be cast to org.apache.struts.action.ActionError
org.apache.struts.taglib.html.ErrorsTag.doStartTag(ErrorsTag.java:215)
org.apache.jsp.login_jsp._jspx_meth_html_005ferrors_005f0(login_jsp.java:139)
org.apache.jsp.login_jsp._jspx_meth_html_005fhtml_005f0(login_jsp.java:109)
org.apache.jsp.login_jsp._jspService(login_jsp.java:74)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:331)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1069)
org.apache.struts.action.RequestProcessor.internalModuleRelativeForward(RequestProcessor.java:1012)
org.apache.struts.action.RequestProcessor.processValidate(RequestProcessor.java:980)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:255)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

my Form is
public class LoginForm extends ActionForm {

private String userName="";
private String password="";
private String email="";
private int age=0;

public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}

public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}

public ActionErrors validate(ActionMapping mapping, HttpServletRequest request) {
ActionErrors err = new ActionErrors();
if (userName == null || "".equals(userName)) {
err.add(userName, new ActionMessage("error.userName.required"));
}
if (password == null || "".equals(password)) {
err.add(password, new ActionMessage("error.password.required"));
}
return err;
}

public void reset(ActionMapping mapping, HttpServletRequest request){
userName=null;
password=null;
}
}

and jsp page is
<%@taglib uri="/WEB-INF/struts-html.tld" prefix="html"%>
<html:html>

<head>
<title>Login Page</title>
</head>
<body>

<html:errors/>

<html:form action="/Login">

User Name :<html:text name="LoginForm" property="userName" /> <br>

Password :<html:password name="LoginForm" property="password" /><br>

<html:submit value="Login" />

</html:form>
</body>
</html:html>

please suggest, if anybody has some idea .Thanks!

Please UseCodeTags when posting code or configuration. Unformatted code and configuration is very difficult to read. You can edit your post to include them by using the

button.