Javax.servlet does not exit

hello all,
i m new and have recently started using java, servlets, jsp with netbeans and Tomcat.
There are some servlet examples in Tomcat5.5\webapps\servlets-examples\WEB-INF\classes\...
Using the //localhost:8080/....... , i can easily get these servlets working in the browser.
When i opened one of the java file say: HelloWorldExample.java in Netbeans, there area lot of red circles with exclamation mark in it.
it says: "package javax.servlet does not exist"
in this line: import javax.servlet.*;
i am surprised why such errors are there and with such errors also the program runs...i want to get rid of such red circles and the error it is showing.
I have jdk1.6.0_10 , jre1.6.0_05 , Netbeans IDE 6.0.1 , Tomcat 5.5 installed in my Windows Vista OS
i have set my classpath as
.;C:\root\jakarta-tomcat-5.5.9\common\lib\servlet-api.jar;C:\root\jakarta-tomcat-5.5.9\common\lib\jsp-api.jar;
JAVA_HOME : C:\Program Files\Java\jdk1.6.0_10
any help is appreciated....
Thank you.
Edited by: kuchu on Jun 26, 2009 12:00 PM

The servlet API is included in the application server implementation which you're going to use (in this case Tomcat). You need to associate the application server with the Netbeans project. Check the project properties.
I cannot tell the detailed steps how to do it in Netbeans as I already uninstalled it after 5 minutes of trying some years ago, but in Eclipse you can select and add the application server during the 'create dynamic web project' wizard. It is smart enough to include the appserver's libraries in the project's build path. From what I heard and read about Netbeans is that it is also able to do so.

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    I am having a great deal deal of trouble trying to compile a program using javax.servlet and javax.servlet.hhtp.*. I have setup the JAVA_HOME and the CLASSPATH variables as per the Installation instructions. I appear to have hit a brick wall and I am absolutely desperate to get this working. I have installed the J2EE SDK as well as the Servletapi2.1. Please Help.
    Variables:
    CLASSPATH=c:\jdk1.3\lib\tools.jar;c:\j2sdkee1.3.1\lib\j2ee.jar;c:\jdk1.3\jre\bin;c:\jdk1.3\jre\lib;c:\mm.mysql-2.0.14\org;c:\jdk1.3\lib\servlet.jar;
    JAVA_HOME=c:\jdk1.3;
    J2EE_HOME=c:\j2sdkee1.3.1;
    PATH=%PATH%;c:\jdk1.3\bin;c:\j2sdkee1.3.1\bin;
    Error message from compiler:
    L:\PROGRA~1\allaire\jrun\servers\default\loanstest\web-inf\classes\PasswordServlet.java:27: package javax.servlet does not exist
    import javax.servlet.*;
    ^
    L:\PROGRA~1\allaire\jrun\servers\default\loanstest\web-inf\classes\PasswordServlet.java:30: package javax.servlet.http does not exist
    import javax.servlet.http.*;
    ^
    L:\PROGRA~1\allaire\jrun\servers\default\loanstest\web-inf\classes\PasswordServlet.java:39: cannot resolve symbol
    symbol : class HttpServlet
    location: class PasswordServlet
    public class PasswordServlet extends HttpServlet

    I can only think of three suggestions.
    One, use your mouse to "cut-n-paste" the value of CLASSPATH and verify that those files are exactly where you think they are, and are spelled right.
    E.g.
    CD C:\JDK1.3\LIB
    DIR SERVLET.JAR
    Two, if they're spelled right, run "jar tvf" on the files to make sure they aren't corrupted or something.
    E.g.:
    JAR TVF SERVLET.JAR
    Three, since you're working in Windoze, try putting the value inside double quotes. E.g.:
    SET CLASSPATH="c:\jdk1.3\lib\tools.jar;c:\j2sdkee1 ... etc ... "
    If you haven't tried the above, give it a go, see what happens.

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