java won't compile with RequestDispatcher, classpath set correctly

Question

I'm using ubuntu and I've been trying to compile based on my research and my previous posting regarding to compilation issue. This time I suspect CLASSPATH but cannot figure out what is wrong really.

(The java file I want to complie)

/home/makun/tomcat/apache-tomcat-6.0.26/webapps/head_first
/src/com/masatosan/registerservlet/RegisterServlet.java

This is the servlet class that extends HttpServlet thus using RequestDispatcher class.

I have servlet-api.jar in tomcat directory:

/home/makun/tomcat/apache-tomcat-6.0.26/lib/servlet-api.jar

So I added the path to CLASSPATH then my CLASSPATH looks like:

CLASSPATH=/usr/bin;.;/home/makun/tomcat/apache-tomcat-6.0.26/webapps/head_first/src;/usr/share/java/lib;/home/makun/Desktop/java_run;/home/makun/tomcat/apache-tomcat-6.0.26/webapps/head_first/src;/usr/share/java/lib;/home/makun/tomcat/apache-tomcat-6.0.26/lib;/home/makun/tomcat/apache-tomcat-6.0.26/lib/servlet-api.jar

Now I try to complie RegisterServlet.java from my current directory which is /home/makun/tomcat/apache-tomcat-6.0.26/webapps/head_first /src/com/masatosan/registerservlet

javac -verbose -cp .:/home/makun/tomcat/apache-tomcat-6.0.26/lib ./RegisterServlet.java

Then evil errors show up...

makun /home/makun/tomcat/apache-tomcat-6.0.26/webapps/head_first/src/com/masatosan/registerservlet ->javac -verbose -cp .:/home/makun/tomcat/apache-tomcat-6.0.26/lib ./RegisterServlet.java 
[parsing started ./RegisterServlet.java]
[parsing completed 81ms]
[search path for source files: .,/home/makun/tomcat/apache-tomcat-6.0.26/lib]
[search path for class files: /usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/resources.jar,/usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/rt.jar,/usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/sunrsasign.jar,/usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/jsse.jar,/usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/jce.jar,/usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/charsets.jar,/usr/lib/jvm/java-6-sun-1.6.0.20/jre/classes,/usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/ext/sunpkcs11.jar,/usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/ext/sunjce_provider.jar,/usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/ext/localedata.jar,/usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/ext/dnsns.jar,.,/home/makun/tomcat/apache-tomcat-6.0.26/lib]
[loading java/io/IOException.class(java/io:IOException.class)]
[loading java/util/ArrayList.class(java/util:ArrayList.class)]
[loading java/util/HashMap.class(java/util:HashMap.class)]
[loading java/util/List.class(java/util:List.class)]
[loading java/util/Map.class(java/util:Map.class)]
./RegisterServlet.java:9: package javax.servlet does not exist
import javax.servlet.RequestDispatcher;
                    ^
./RegisterServlet.java:10: package javax.servlet does not exist
import javax.servlet.ServletException;
                    ^
./RegisterServlet.java:11: package javax.servlet.http does not exist
import javax.servlet.http.HttpServlet;
                         ^
./RegisterServlet.java:12: package javax.servlet.http does not exist
import javax.servlet.http.HttpServletRequest;
                         ^
./RegisterServlet.java:13: package javax.servlet.http does not exist
import javax.servlet.http.HttpServletResponse;
                         ^
./RegisterServlet.java:16: cannot find symbol
symbol: class HttpServlet
public class RegisterServlet extends HttpServlet {
                                     ^
[loading java/lang/String.class(java/lang:String.class)]
./RegisterServlet.java:24: cannot find symbol
symbol  : class HttpServletRequest
location: class com.masatosan.registerservlet.RegisterServlet
 public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
                   ^
./RegisterServlet.java:24: cannot find symbol
symbol  : class HttpServletResponse
location: class com.masatosan.registerservlet.RegisterServlet
 public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
                                               ^
./RegisterServlet.java:24: cannot find symbol
symbol  : class ServletException
location: class com.masatosan.registerservlet.RegisterServlet
 public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
                                                                                    ^
./RegisterServlet.java:28: cannot find symbol
symbol  : class HttpServletRequest
location: class com.masatosan.registerservlet.RegisterServlet
 public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
                    ^
./RegisterServlet.java:28: cannot find symbol
symbol  : class HttpServletResponse
location: class com.masatosan.registerservlet.RegisterServlet
 public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
                                                ^
./RegisterServlet.java:28: cannot find symbol
symbol  : class ServletException
location: class com.masatosan.registerservlet.RegisterServlet
 public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
                                                                                     ^
[checking com.masatosan.registerservlet.RegisterServlet]
[loading java/util/AbstractMap.class(java/util:AbstractMap.class)]
[loading java/lang/Object.class(java/lang:Object.class)]
[loading java/lang/Exception.class(java/lang:Exception.class)]
[loading java/lang/Throwable.class(java/lang:Throwable.class)]
./RegisterServlet.java:55: cannot find symbol
symbol  : class RequestDispatcher
location: class com.masatosan.registerservlet.RegisterServlet
  RequestDispatcher dispatcher = request.getRequestDispatcher(address);
  ^
[loading java/lang/CharSequence.class(java/lang:CharSequence.class)]
[loading java/io/Serializable.class(java/io:Serializable.class)]
[loading java/lang/Comparable.class(java/lang:Comparable.class)]
[total 828ms]
13 errors

Can anyone help me point out why my complier cannot locate the RequestDispatcher?

EDIT

As per suggestion, I've removed semi-colon and change to colon in my CLASSPATH and also simply run javac -verbose RegisterServlet.java and it complied successfully.

Answer 1

 javac -verbose -cp .:/home/makun/tomcat/apache-tomcat-6.0.26/lib ./RegisterServlet.java

You're overriding the CLASSPATH env variable here. You also seem to seperate the classpath entries with a ; , on *nix you might need a : instead. If your CLASSPATH env variable is exported, just do

 javac -verbose RegisterServlet.java

or

 javac -cp $CLASSPATH -verbose RegisterServlet.java