use of ActionMessages in struts

[shashanka jena]

Earlier I was using struts 1.1 and in that ActionError was working fine but currently I am using struts 1.2 and with this ActionError is depricated so I am trying to use ActionMessages in my form bean by overriding validate() and getting an error as follows :
The method saveMessages(HttpServletRequest, ActionMessages) is undefined for the type LookupForm
LookupForm is my form bean class name
My code of validate() inside form bena class i.e LookupForm

public ActionMessages validate(HttpServletRequest request) {

ActionMessages messages = new ActionMessages();

if (getName() == null || getName().trim().length() == 0)
{
messages.add("Name", new ActionMessage("error.name.required"));
saveMessages(request,messages);
}
else if (getAge() == null || getAge().trim().length() == 0)
{
messages.add("Age", new ActionMessage("error.age.required"));
}
if(messages.size() > 0){
saveMessages(request,messages);
System.out.println("inside from bean and no. of error messages added is= "+ messages.size());
}
return messages;
}