Errors in JSP files, help.....

Question

I have 2 questions:
1)
When i javac a java file, the following errors came out.
C:\>javac logon.java
logon.java:3: package javax.servlet does not exist
import javax.servlet.*;
^
logon.java:4: package javax.servlet.http does not exist
import javax.servlet.http.*;
^
2 errors
Anyone knows what does it means??? Any ways to solve this error??
2)
When i type http://localhost:8080/cdlist/cd_list.jsp at the IE address to view the file , the following error came out
org.apache.jasper.JasperException: This absolute uri (http://jakarta.apache.org/taglibs/xtags-1.0) cannot be resolved in either web.xml or the jar files deployed with this application
Can anyone please explain what it means and is there any ways to solve this error. Thankyou very much....

Answer 1

Sorry but there seems to have another problem, while i run the file using tomcat this error came out:
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: Unable to compile class for JSP
An error occurred at line: 40 in the jsp file: /processLogon.jsp
Generated servlet error:
[javac] Compiling 1 source file
C:\jakarta-tomcat-4.1.18\work\Standalone\localhost\_\processLogon_jsp.java:153: ';' expected
               routeURL = "frame.htm"
^
An error occurred at line: 19 in the jsp file: /processLogon.jsp
Generated servlet error:
C:\jakarta-tomcat-4.1.18\work\Standalone\localhost\_\processLogon_jsp.java:71: cannot resolve symbol
symbol : class logon
location: package logonBean
logonBean.logon logon = null;
^
An error occurred at line: 19 in the jsp file: /processLogon.jsp
Generated servlet error:
C:\jakarta-tomcat-4.1.18\work\Standalone\localhost\_\processLogon_jsp.java:73: cannot resolve symbol
symbol : class logon
location: package logonBean
logon = (logonBean.logon) pageContext.getAttribute("logon", PageContext.SESSION_SCOPE);
^
An error occurred at line: 19 in the jsp file: /processLogon.jsp
Generated servlet error:
C:\jakarta-tomcat-4.1.18\work\Standalone\localhost\_\processLogon_jsp.java:76: cannot resolve symbol
symbol : class logon
location: package logonBean
logon = (logonBean.logon) java.beans.Beans.instantiate(this.getClass().getClassLoader(), "logonBean.logon");
^
I was wondering, will tomcat javac the java file itself or do i need to javac it myself and put it in the root folder??? In this case i have javac the java file and i put the class file in root folder together with other files to run it, but there seems to still have errors while i try to run it. Pls help.