The import javax.servlet cannot be resolved

there are unnecessary path in classpath. just add for tomcat and for jre or jdk. adding rt.jar is not required as it will be added with tomcat\lib path.

You can simply set the classpath to

"C:\Program Files\Apache Software Foundation\Tomcat 6.0\lib\*;."

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Tomcat manages its own classpath, you shouldn't be adding anything to the classpath.

Try starting with a clean tomcat install and let me know if you get the same error

>  But sathyabalaji is trying to compile his LoginServlet.java  file.

the error is coming from tomcat

> That is done using the jdk.

that is correct though. They need to first compile the servlet before deploying to tomcat
To do that you'll need C:\Program Files\Apache Software Foundation\Tomcat 6.0\lib\servlet-api.jar in your build path as rrz mentions in first comment

Dear All
1) I have removed all classpath in tomcat
Tomcat classpath is C:\Program Files\Apache Software Foundation\Tomcat 6.0\bin\bootstrap.jar;
CLASSPATH : C:\Program Files\Apache Software Foundation\Tomcat 6.0\lib\servlet-api.jar;
JAVA_HOME : C:\Program Files\Java\jdk1.5.0_02

I have uninstalled java 1.6 updates. I have jkt1.5.0_02 only now.

when i compile at dos prompt, i am getting error.

C:\PROGRA~1\APACHE~1\TOMCAT~1.0\vgp\src>javac LoginServlet.java
LoginServlet.java:1: package javax.servlet does not exist
import javax.servlet.*;
^
LoginServlet.java:2: package javax.servlet.http does not exist
import javax.servlet.http.*;
^
LoginServlet.java:7: cannot find symbol
symbol: class HttpServlet
public class LoginServlet extends HttpServlet {
                                  ^
LoginServlet.java:14: cannot find symbol
symbol  : class ServletConfig
location: class LoginServlet
        public void init(ServletConfig config) {
                         ^
LoginServlet.java:28: cannot find symbol
symbol  : class HttpServletRequest
location: class LoginServlet
        public void service(HttpServletRequest request, HttpServletResponse resp
onse)
                            ^
LoginServlet.java:28: cannot find symbol
symbol  : class HttpServletResponse
location: class LoginServlet
        public void service(HttpServletRequest request, HttpServletResponse resp
onse)
                                                        ^
LoginServlet.java:29: cannot find symbol
symbol  : class ServletException
location: class LoginServlet
                        throws ServletException, IOException {
                               ^
LoginServlet.java:32: cannot find symbol
symbol  : class HttpSession
location: class LoginServlet
                        HttpSession session = request.getSession(true);
                        ^
Note: LoginServlet.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
8 errors


import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.sql.*;
import java.util.*;

public class LoginServlet extends HttpServlet {

      Connection connection;
      Statement statement;
      ResultSet resultset;
      PrintWriter out;

      public void init(ServletConfig config) {
            String driver = config.getInitParameter("driver");
            String url = config.getInitParameter("url");
            String user = config.getInitParameter("user");
            String pass = config.getInitParameter("pass");

            try {
                  Class.forName(driver);
                  connection = DriverManager.getConnection(url, user, pass);
            } catch (Exception e) {
                  System.out.println("Exception in init():" + e);
            }// catch
      }// init

      public void service(HttpServletRequest request, HttpServletResponse response)
                  throws ServletException, IOException {
            try {
                  System.out.println("in service");
                  HttpSession session = request.getSession(true);
                  response.setContentType("text/html");
                  out = response.getWriter();
                  statement = connection.createStatement();
                  resultset = statement
                              .executeQuery("SELECT USERNAME, PASSWORD FROM LOGIN WHERE USERNAME='"
                                          + request.getParameter("userName")
                                          + "' AND PASSWORD='"
                                          + request.getParameter("password") + "'");

                  if (resultset.next()) {
                        System.out.println("in if");
                        ResultSet languageResultSet = statement
                                    .executeQuery("SELECT LANGUAGE FROM LANGUAGES");
                        ArrayList languages = new ArrayList();
                        while (languageResultSet.next()) {
                              languages.add(languageResultSet.getString("LANGUAGE"));
                        }
                        session.setAttribute("languages", languages);
                        System.out.println("in lang");
                        ResultSet levelResultSet = statement
                                    .executeQuery("SELECT TESTLEVEL FROM LEVELS");
                        System.out.println("rs" + levelResultSet);
                        ArrayList levels = new ArrayList();
                        while (levelResultSet.next()) {
                              levels.add(levelResultSet.getString("TESTLEVEL"));
                        }
                        session.setAttribute("levels", levels);
                        System.out.println("in level");
                        System.out.println("size::" + levels.size() + "::"
                                    + languages.size());
                        response.sendRedirect("./LoginSuccess.jsp");
                  } else {
                        response.sendRedirect("./index.jsp");
                  }
            } catch (Exception e) {
                  System.out.println("login failed::" + e);
            }//catch
      }//service
}//class

Please Help to solve this

Regards
Sathya

Please post the result of the following at the command prompt

echo %CLASSPATH%

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HI

CLASS_PATH=C:\Program Files\Apache Software Foundation\Tomcat 6.0\lib\servlet-ap
i.jar;

Regards
Sathya

What happens when you use  
C:\PROGRA~1\APACHE~1\TOMCAT~1.0\vgp\src>javac -classpath "C:\Program Files\Apache Software Foundation\Tomcat 6.0\lib\servlet-api.jar" LoginServlet.java  

If that doesn't work, then recheck the path and make sure that the servlet-api.jar is located there.

After Setting CATALINA_HOME Environment Variables, it is started working fine.

Thanks to all

:)