I am unable to resolve this error

Question

I had set every .jar file which is required but stil i am getting this error
LoginAction.java:4: cannot access javax.servlet.http.HttpServletRequest
bad class file: E:\jboss-4.0.3SP1\server\default\deploy\TestApplication.war\WEB-
INF\lib\servlet-api.jar(javax/servlet/http/HttpServletRequest.class)
class file has wrong version 49.0, should be 48.0
Please remove or make sure it appears in the correct subdirectory of the classpa
th.
import javax.servlet.http.HttpServletRequest;
^
1 error
and my source code is
package com.MyPack.xxxx;
import javax.servlet.http.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.*;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionError;
public class LoginAction extends Action
     public ActionForward execute(ActionMapping am,
                                         ActionForm af,
                                         HttpServletRequest req,
                                         HttpServletResponse res)throws IOException, ServletException
          String target= new String("success");
          if(af!=null)
          LoginForm loginForm = (LoginForm)af;
          String userName = loginForm.getUserName();
          String password = loginForm.getPassword();
          if (userName.equalsIgnoreCase("Datamatics") && password.equalsIgnoreCase("12345"))
               req.setAttribute("UserName",userName);
          else
                    target = new String("failure");          
     return am.findForward(target);
Kindly resolve this error Thanks in advance

Answer 1

class file has wrong version 49.0, should be 48.0This message means that you are compiling the servlet in one version of Java, but the server is running with an earlier version.
It is referring to the version number of java.lang.Object.
Java 5 = 49
Java 1.4 = 48
Java 1.3 = 47
Presumably you are compiling with Java5, but the JAVA_HOME for your server is pointing at Java1.4
Either
- recompile your servlet using compatibility flags to generate 1.4 code
- Change your JAVA_HOME environment variable to point to a Java1.5 installation (and thus run Tomcat with a newer version of java)
If you have copied tools.jar into the tomcat directory, try deleting that.
Cheers,
evnafets