H:\tomcat331\webapps\examples\WEB-INF\classes>javac
RequestHeaderExample.java
RequestHeaderExample.java:8: package javax.servlet does not exist
import javax.servlet.*;
^
RequestHeaderExample.java:9: package javax.servlet.http does not exist
import javax.servlet.http.*;
^
RequestHeaderExample.java:17: cannot find symbol
symbol: class HttpServlet
public class RequestHeaderExample extends HttpServlet {
                                          ^
RequestHeaderExample.java:21: cannot find symbol
symbol  : class HttpServletRequest
location: class RequestHeaderExample
    public void doGet(HttpServletRequest request,
                      ^
RequestHeaderExample.java:22: cannot find symbol
symbol  : class HttpServletResponse
location: class RequestHeaderExample
                      HttpServletResponse response)
                      ^
RequestHeaderExample.java:23: cannot find symbol
symbol  : class ServletException
location: class RequestHeaderExample
        throws IOException, ServletException
                            ^
RequestHeaderExample.java:62: cannot find symbol
symbol  : class HttpServletRequest
location: class RequestHeaderExample
    public void doPost(HttpServletRequest request,
                       ^
RequestHeaderExample.java:63: cannot find symbol
symbol  : class HttpServletResponse
location: class RequestHeaderExample
                      HttpServletResponse response)
                      ^
RequestHeaderExample.java:64: cannot find symbol
symbol  : class ServletException
location: class RequestHeaderExample
        throws IOException, ServletException
                            ^
9 errors


I presume the problem is the classpath doesn't include the JAR file
that has javax.servlet etc. I presume to fix that I need to explicitly
set -classpath parameter in javac command. But I have no idea
where that particular JAR file is locayed, so that I know what path
to specify in the -classpath parameter.


Also I'm unable to find the XML file that maps applications to
servlet class files, so that I could edit that XML file to include
new servlets I write myself. So instead of doing that, I'm trying
to modify the sample applications and re-compile them, hence the
compiler errors listed above.


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