-Following exactly the text in the books I can't compile the classes (com\wrox\secure\*.java)

-The error is:
com\wrox\secure\ForceLoginTag.java:3: package javax.servlet.http does not exist
import javax.servlet.http.HttpServletRequest;
                          ^
com\wrox\secure\ForceLoginTag.java:4: package javax.servlet.http does not exist
import javax.servlet.http.HttpSession;
                          ^
com\wrox\secure\ValidateTag.java:5: package javax.servlet.http does not exist
import javax.servlet.http.HttpServletRequest;
                          ^
com\wrox\secure\ValidateTag.java:6: package javax.servlet.http does not exist
import javax.servlet.http.HttpSession;
                          ^
com\wrox\secure\ForceLoginTag.java:20: cannot resolve symbol
symbol : class HttpSession
location: class com.wrox.secure.ForceLoginTag
    HttpSession session = pageContext.getSession();
    ^
com\wrox\secure\ValidateTag.java:42: cannot resolve symbol
symbol : class HttpSession
location: class com.wrox.secure.ValidateTag
    HttpSession thisSession = pageContext.getSession();

-First I changed the classpath into:
%CATALINA_HOME%\common\lib\jsp-api.jar;;%CATALINA_HOME%\common\lib\jsp-api.jar; as in the book

-Then I changed in dosbox to:
C:\java\Tomcat-5.0.9\webapps\Security\WEB-INF\classes

-Followed by command:
javac com\wrox\secure\*.java

How to solve this problem?

Thanks in advance JH

Check your CLASSPATH.

I don't think you have servlet.jar in it.

c:\tomcat\common\lib\servlet.jar should be in it somewhere.

My classpath is:
%CATALINA_HOME%\common\lib\servlet.jar;%CATALINA_H OME%\common\lib\jsp-api.jar;

So I don't see what is wrong.

You're right, it should work.

Try replacing the %CATALINA_HOME% settings with the proper drive/path just to be sure.