How to run this servlet? Please help!

Question

http://wrox.com/Books/Book_down.asp?section=11_4&isbn=1861002777&subject=&subject_id=
Chapter 13 Source Code
I can't seem to compile this WebMail.java file. I have TomCat and servlets.jar is in my classpath too running but to no avail! Do u manage to compile and run it? Can u guys tell me what did I do wrong? Here's my list of errors(not all).
javac WebMail.java
WebMail.java:4: cannot resolve symbol
symbol : class HttpServlet
location: class WebMail
public class WebMail extends HttpServlet {
^
WebMail.java:6: cannot resolve symbol
symbol : class HttpServletRequest
location: class WebMail
public void doGet(HttpServletRequest request
^
WebMail.java:6: cannot resolve symbol
symbol : class HttpServletResponse
location: class WebMail
public void doGet(HttpServletRequest request
WebMail.java:7: cannot resolve symbol
symbol : class ServletException
location: class WebMail
throws ServletException, IOException {

Answer 1

Direct link: ftp://ftp.wrox.com/Professional/2777/chap13.zip and a code snippet from that link:
import javax.mail.*;
import javax.mail.internet.*;
public class WebMail extends HttpServlet{..}The sample code is not OK, as it does not define where to find HttpServlet or things like HttpServletRequest. Then even if your classpath is allright, the compiler still does not know what is 'HttpServlet'.
If you look at http://java.sun.com/j2ee/tutorial/api/javax/servlet/http/HttpServlet.html you'll see that its full name is javax.servlet.http.HttpServlet. So either use the full names, like in
public class WebMail
  extends javax.servlet.http.HttpServletand
public void doGet(javax.servlet.http.HttpServletRequest ...)or (preferred) simply add the following line at the top of your code:
import javax.servlet.http.*;Arjan.