problem in Compiling servlets

[renu richard]

Hi,

When i tried compiling login.java,i got the below error.

login.java:1: package javax.servlet does not exist
import javax.servlet.*;
^
login.java:2: package javax.servlet.http does not exist
import javax.servlet.http.*;
^
login.java:6: cannot resolve symbol
symbol  : class HttpServlet
location: class login
public class login extends HttpServlet {
                           ^
login.java:17: cannot resolve symbol
symbol  : class ServletConfig
location: class login
 public void init(ServletConfig config)
                  ^
login.java:18: cannot resolve symbol
symbol  : class ServletException
location: class login
  throws ServletException {
         ^
login.java:23: cannot resolve symbol
symbol  : class HttpServletRequest
location: class login
 public void doGet(HttpServletRequest request,
                   ^
login.java:24: cannot resolve symbol
symbol  : class HttpServletResponse
location: class login
  HttpServletResponse response)
  ^
login.java:25: cannot resolve symbol
symbol  : class ServletException
location: class login
  throws ServletException, IOException {
         ^
login.java:31: cannot resolve symbol
symbol  : class HttpServletRequest
location: class login
 public void doPost(HttpServletRequest request,
                    ^
login.java:32: cannot resolve symbol
symbol  : class HttpServletResponse
location: class login
  HttpServletResponse response)
  ^
login.java:33: cannot resolve symbol
symbol  : class ServletException
location: class login
  throws ServletException, IOException {
         ^
login.java:20: cannot resolve symbol
symbol  : variable super
location: class login
  super.init(config);
  ^
login.java:46: cannot resolve symbol
symbol  : class ServletContext
location: class login
  ServletContext context = getServletContext();
  ^
login.java:46: cannot resolve symbol
symbol  : method getServletContext ()
location: class login
  ServletContext context = getServletContext();
                           ^
login.java:48: cannot resolve symbol
symbol  : class RequestDispatcher
location: class login
  RequestDispatcher dispatcher =
  ^
15 errors
 
So i set servlet-api.jar(C:\Program Files\Apache Software Foundation\Tomcat 6.0\lib\servlet-api.jar) in the classpath. After which i got the below error.
 
login.java:6: cannot access javax.servlet.http.HttpServlet
bad class file: C:\Program Files\Apache Software Foundation\Tomcat 6.0\lib\servl
et-api.jar(javax/servlet/http/HttpServlet.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 classpath.

But it is getting compiled fine if i set weblogic.jar in the classpath.

Can someone please tell me why it is not getting compiled with the servlets-api.jar.
[ October 07, 2008: Message edited by: ren_richard ]

[Bear Bibeault]

"ypren", please check your private messages for an important administrative matter.

[Amit Ghorpade]

Hi ypren welcome to Javaranch ,

Firstly use code tags for your code. Unformatted code is hard to read and results in less response for your post. You can add code tags by editing your post, to edit the post click the .

The reason you are experiencing the problem is the version incompatibility.
Which versions of Weblogic and Java are you using?

[renu richard]

Thanks Amit for your valuable comments.

Weblogic version : 8.1
Java version : Tried using both JDK1.4 and 1.6

[Jesper de Jong]

"ren_richard" - first, please check your private messages again.

The following line in the error message that you get:

class file has wrong version 49.0, should be 48.0

Suggests that you are using classes that were compiled with JDK 5.0, and you are trying to use them with JDK 1.4. That will not work.

I see that you are using Tomcat 6.0. That version of Tomcat requires JDK 5.0 or newer. The JAR files in that version of Tomcat are compiled with JDK 5.0, so you will get into trouble if you try to use those JAR files on Java 1.4.

Use the JAR files that you get with Weblogic 8.1 to compile and run your application instead of those you get with Tomcat 6.0.