Tomcat 5.0.18 Servlets

I am new to JSP, installed J2SDK1.4.2_03 and Tomcat 5.0.18. I am able to get the jsp pages to work and also view the sample servlet examples. But I am having a hard time getting my servlets to work. I have
set the
ClassPath to C:\Jakarta\Jakarta-tomcat-5.0.18\common\lib\servlet-api.jar
My directory structure is
webapps\Myexamples\WEB_INF\CLASSES
WEB-INF has the web.xml doc, and the Classes and lib folders
Classes has the class called DontPanic, and the java file DontPanic
the url I typed is
http://localhost:8080/Myexamples/servlet/DontPanic
I get an error message source file not found.
Please help!!!!!!
Lakshmi

ClassPath to
C:\Jakarta\Jakarta-tomcat-5.0.18\common\lib\servlet-api
jarThis is worthless at runtime. Tomcat ignores your system CLASSPATH environment variable. It uses its own CLASSPATH at runtime. You must include the servlet-api.jar in your CLASSPATH when you compile. I do it by using the -classpath option. (Actually I use Ant to build Web apps.)
>
My directory structure is
webapps\Myexamples\WEB_INF\CLASSES
WEB-INF has the web.xml doc, and the Classes and lib
folders
Classes has the class called DontPanic, and the java
file DontPanic
So your serlvet DontPanic.class file is in webapps/Myexamples/WEB-INF/classes. (Not an underscore in WEB_INF, it's a hyphen WEB-INF.)
Tomcat won't deal with a class that's not in a package. You should put a package statement at the top of your servlet .java file and make sure that it's compiled into that directory in your WEB-INF/classes.
I'm assuming that you've got the servlet mapping in the web.xml properly. You should be mapping your servlet class DontPanic to a URL mapping /DontPanic.
the url I typed is
http://localhost:8080/Myexamples/servlet/DontPanic
After you've changed your WEB_INF to WEB-INF, try this URL:
http://localhost:8080/Myexamples/DontPanicAre there any messages in the Tomcat logs that tell you anything? - MOD

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Message was edited by: Steve Hideg

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=================================
import java.io.*;
import java.net.*;
import java.util.*;
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import javax.servlet.http.*;
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=============================
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=============================
import java.applet.*;
import java.awt.*;
import java.io.*;
import java.net.*;
import java.util.*;
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e.getClass().getName() + ": " + e.getMessage());
try { Thread.sleep(1000); } catch (InterruptedException ignored) { }
return nextMessage + "\n";
public void run() {
while (true) {
text.appendText(getNextMessage());
public void stop() {
thread.stop();
thread = null;
void broadcastMessage(String message) {
message = user + ": " + message; // Pre-pend the speaker's name
try {
URL url = new URL(getCodeBase(), "/servlet/TryChatServlet");
HttpMessage msg = new HttpMessage(url);
Properties props = new Properties();
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msg.sendPostMessage(props);
catch (SocketException e) {
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catch (FileNotFoundException e) {
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catch (Exception e) {
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e.getClass().getName() + ": " + e.getMessage());
public boolean handleEvent(Event event) {
switch (event.id) {
case Event.ACTION_EVENT:
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input.setText("");
return true;
return false;
=====================================
HttpMessage
======================================
import java.io.*;
import java.net.*;
import java.util.*;
public class HttpMessage {
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String args = null;
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con.setDoOutput(true);
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so where is this in 5.5.4

Tomcat wont shutdown because servlet is active

At the intial invokation of the servlet, the servlet spawn severals threads (all child threads extends TimeTask) to perform specific tasks and sleep until the time interval is up, and perform the task again...and so on.
After createring and starting the children threads, the servlet goto sleep for 24 hours
while (true){
try{    Thread.sleep(HOUR_24); }
catch (InterruptedException e){}
According to Tomcat API, Tomcat allow the servlet to finsh perform it task before shutting down....however, my servlet will never finish....it's up 24 hours a day, 365 days a year.
Currntly, we have to manually find the servlet and kill the process.
Is there some way I can get the servlet to unload itself when Tomcat shut down?

your thread:
class ABCThread extends Thread {
public static final long TIME_24_HOURS = ..... ;
public boolean running = true;
public synchronized run() {
      while(running) {
            try { wait( TIME_24_HOURS ); } catch (InterruptedException ex) { return; }
            ... your database stuff is here ...
}your servlet:
ABCThread abcThread = new ABCThread(); // this is your running thread instantiated by this servlet
public void destroy() {
         synchronized(abcThread) {
                abcThread.running = false;
                abcThread.notifyAll();
...This trick is to "notify" the sleeping thread ABCThread. If it notified, InterruptedException will be thrown from the wait( ) , you can use this to jump out from the looping..
If the notifyAll() happens while the thread is not wait()ing, then the thread would exit as soon as it encounter the next while(running) condition.
Does this solve?
rgds,
Alex

Tomcat can't find servlet class

Hello,
I am trying to forward information from a jsp page to a servlet (the example in JSPIntro.pdf). I keep getting the error that the servlet class can't be found. I have put it in webapps/examples/web-inf/classes. I also added the servlet name in several web.xml files in different directories to no avail. Can anyone give me a hint on setup.
Thanks

to setup correctly the servlet you need something like this int the web.xml
<servlet>
<servlet-name>yourservlet</servlet-name>
<servlet-class>xx.yyy.zzz.yourservlet</servlet-class>
<init-param>
</servlet>
and you must put the class under
WEB_INF/lib/xx/yyyy/zzz directory of your context.
the servlet must be called as
http://yourhost/yourcontext/servlet/yourservlet
hope it helps,
Giovanni

Tomcat 5.0.18 Servlets

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