Basic servlet problem plz help me

HI all,
I have installed apache tomcat 5.5 server and set the class path to servlet-api.jar. in environment variable in Edit user variables ----->
.;C:\Program Files\Java\jdk1.5.0_01\jre\lib\rt.jar;C:\Program Files\Apache Software Foundation\Tomcat 5.5\common\lib\servlet-api.jar
and i have created a helloworld program :-" FirstSer.java"
import javax.servlet.;*
import java.io.*;*
public class FirstSer extends GenericServlet+
+*{*+
*     public void service(ServletRequest req, ServletResponse res) throws ServletException,IOException*
+*     {*+
PrintWriter pw=res.getWriter();+
*      res.setContentType("text/html");*
*      pw.println("<html><body bgcolor=red>");*
pw.println("<font size=6 color=white >");+
*      pw.println("hello good morning");*
*      pw.println("</font></body></html>");*
and i've throwed the DOTCLASS in classes folder
and the WEB.XML in WEB-INF folder
+<servlet>+
+*<servlet-name>FirstSer</servlet-name>*+
+*<servlet-class>FirstSer.class</servlet-class>*+
+*</servlet>*+
+*<servlet-mapping>*+
+*<servlet-name>FirstSer</servlet-name>*+
+*<url-pattern>bunny/FirstSer</url-pattern>*+
+*</servlet-mapping>*+
every thing i have done is that correct .. ?????
BUT still m unable to deploy the servlet prog . Browser is posting 404 error
http://localhost:8080/contextroot/FirstSer
// PLEASE HELP //
and please explain the procedure and architecture of tomcat context root (its a humble request).
THANKS IN ADVANCE .

bunny_aug15 wrote:
BUT still m unable to deploy the servlet prog . Browser is posting 404 error 404 simply means "Page not found". With other words, the URL used is wrong.
Let's take a look to your servlet mapping:
<url-pattern>bunny/FirstSer</url-pattern>So your servlet will only be invoked if your URL matches "bunny/FirstSer".
Let's take a look how you composed the URL:
http://localhost:8080/contextroot/FirstSerThat indeed doesn't match. Therefore the 404.
Solution? Obviously change the url-pattern or invoke it the right way.

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Manager App HOW-TO
Introduction
In many production environments, it is very useful to have the capability to deploy a new web application, or undeploy an existing one, without having to shut down and restart the entire container. In addition, you can request an existing application to reload itself, even if you have not declared it to be reloadable in the Tomcat 4 server configuration file.
To support these capabilities, Tomcat 4 includes a web application (installed by default on context path /manager) that supports the following functions:
Deploy a new web application, on a specified context path, from the uploaded contents of a WAR file.
Install a new web application, which can be anywhere on the server's disks.
List the currently deployed web applications, as well as the sessions that are currently active for those web apps.
Reload an existing web application, to reflect changes in the contents of /WEB-INF/classes or /WEB-INF/lib.
Remove an installed web application.
Start a stopped application (thus making it available again).
Stop an existing application (so that it becomes unavailable), but do not undeploy it.
Undeploy a deployed web application and delete its document base directory.
Since Manager is itself a web application, it interacts with you using standard HTTP requests and responses. However, it's "user interface" is minimal, because it is intended to be accessed from scripts set up by the system administrator. For this reason, commands are given as part of the request URI, and responses are in the form of simple text that can be easily parsed and processed.
Future versions of Tomcat 4 will include administrative functionality that is presented in (at least) the following forms:
As web services, so that Tomcat administration can be easily integrated into remote and/or non-Java mnagement environments.
As a web application with a nice user interface (built on top of the web services processing layer) for easy Tomcat administration via a web browser.
In addition to executing Manager commands directly via HTTP, Tomcat 4 includes a convenient set of task definitions for the Ant (version 1.4 or later) build tool. See Executing Manager Commands With Ant for more information.
Configuring Manager Application Access
The description below uses the variable name $CATALINA_HOME to refer to the directory into which you have installed Tomcat 4, and is the base directory against which most relative paths are resolved. However, if you have configured Tomcat 4 for multiple instances by setting a CATALINA_BASE directory, you should use $CATALINA_BASE instead of $CATALINA_HOME for each of these references.
It would be quite unsafe to ship Tomcat with default settings that allowed anyone on the Internet to execute the Manager application on your server. Therefore, the Manager application is shipped with the requirement that anyone who attempts to use it must authenticate themselves, using a username and password that have the role manager associated with them. Further, there is no username in the default users file ($CATALINA_HOME/conf/tomcat-users.xml) that is assigned this role. Therefore, access to the Manager application is completely disabled by default.
To enable access to the Manager web application, you must either create a new username/password combination and associate the role name manager with it, or add the manager role to some existing username/password combination. Exactly where this is done depends on which Realm implementation you are using:
MemoryRealm - If you have not customized your $CATALINA_HOME/conf/server.xml to select a different one, Tomcat 4 defaults to an XML-format file stored at $CATALINA_HOME/conf/tomcat-users.xml, which can be edited with any text editor. This file contains an XML <user> for each individual user, which might look something like this:
<user name="craigmcc" password="secret" roles="standard,manager" />
which defines the username and password used by this individual to log on, and the role names he or she is associated with. You can add the manager role to the comma-delimited roles attriute for one or more existing users, and/or create new users with that assigned role.
JDBCRealm - Your user and role information is stored in a database accessed via JDBC. Add the manager role to one or more existing users, and/or create one or more new users with this role assigned, following the standard procedures for your environment.
JNDIRealm - Your user and role information is stored in a directory server accessed via LDAP. Add the manager role to one or more existing users, and/or create one or more new users with this role assigned, following the standard procedures for your environment.
The first time you attempt to issue one of the Manager commands described in the next section, you will be challenged to log on using BASIC authentication. The username and password you enter do not matter, as long as they identify a valid user in the users database who possesses the role manager.
Supported Manager Commands
All commands that the Manager application knows how to process are specified in a single request URI like this:
http://{host}:{port}/manager/{command}?{parameters}
where {host} and {port} represent the hostname and port number on which Tomcat is running, {command} represents the Manager command you wish to execute, and {parameters} represents the query parameters that are specific to that command. In the illustrations below, customize the host and port appropriately for your installation.
Most commands accept one or more of the following query parameters:
path - The context path (including the leading slash) of the web application you are dealing with. To select the ROOT web application, specify a zero-length string. NOTE - It is not possible to perform administrative commands on the Manager application itself.
war - URL of a web application archive (WAR) file, or pathname of a directory, that contains the web application. You can use URLs in any of the following formats:
file:/absolute/path/to/a/directory - The absolute path of a directory that contains the unpacked version of a web application. This directory will be attached to the context path you specify without any changes.
file:/absolute/path/to/a/webapp.war - The absolute path of a web application archive (WAR) file. This is valid only for the /deploy command, and is the only acceptable format to that command.
jar:file:/absolute/path/to/a/warfile.war!/ - The URL to a local web application archive (WAR) file. You can use any syntax that is valid for the JarURLConnection class for reference to an entire JAR file.
jar:http://hostname:port/path/to/a/warfile.war!/ - You can also deploy web applications from a remote JAR file. You can use any syntax that is valid for the JarURLConnection class for reference to an entire JAR file.
Each command will return a response in text/plain format (i.e. plain ASCII with no HTML markup), making it easy for both humans and programs to read). The first line of the response wil begin with either OK or FAIL, indicating whether the requested command was successful or not. In the case of failure, the rest of the first line will contain a description of the problem that was encountered. Some commands include additional lines of information as described below.
Internationalization Note - The Manager application looks up its message strings in resource bundles, so it is possible that the strings have been translated for your platform. The examples below show the English version of the messages.
Deploy A New Application
http://localhost:8080/manager/deploy?path=/foo
Upload the web application archive (WAR) file that is specified as the request data in this HTTP PUT request, install it into the appBase directory of our corresponding virtual host, and start it on the context path specified by the path request parameter. The application can later be undeployed (and the corresponding application directory removed) by use of the /undeploy.
NOTE - Since this command requires an HTTP PUT request, it is usable only from tools (such as the custom Ant tasks described below). To install a new web application without copying, consider the /install command described below. This command is the logical opposite of the /undeploy command.
If installation and startup is successful, you will receive a response like this:
OK - Deployed application at context path /foo
Otherwise, the response will start with FAIL and include an error message. Possible causes for problems include:
Application already exists at path /foo
The context paths for all currently running web applications must be unique. Therefore, you must either remove or undeploy the existing web application using this context path, or choose a different context path for the new one.
Encountered exception
An exception was encountered trying to start the new web application. Check the Tomcat 4 logs for the details, but likely explanations include problems parsing your /WEB-INF/web.xml file, or missing classes encountered when initializing application event listeners and filters.
Invalid context path was specified
The context path must start with a slash character, unless you are referencing the ROOT web application -- in which case the context path must be a zero-length string.
No context path was specified
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Install A New Application
http://localhost:8080/manager/install?path=/foo&war=file:/path/to/foo
http://localhost:8080/manager/install?path=/bar&war=jar:file:/path/to/bar.war!/
Install and start a new web application, attached to the specified context path (which must not be in use by any other web application). The war parameter specifies a URL (including the file: scheme) for either a directory or a web application archive (WAR) file. The supported syntax for a URL referring to a WAR file is described on the Javadocs page for the java.net.JarURLConnection class. Use only URLs that refer to the entire WAR file. This command is the logical opposite of the /remove command.
If installation and startup is successful, you will receive a response like this:
OK - Installed application at context path /foo
Otherwise, the response will start with FAIL and include an error message. Possible causes for problems include:
Application already exists at path /foo
The context paths for all currently running web applications must be unique. Therefore, you must either remove or undeploy the existing web application using this context path, or choose a different context path for the new one.
Document base does not exist or is not a readable directory
The URL specified by the war parameter must identify a directory on this server that contains the "unpacked" version of a web application, or the absolute URL of a web application archive (WAR) file that contains this application. Correct the value specified by the war parameter.
Encountered exception
An exception was encountered trying to start the new web application. Check the Tomcat 4 logs for the details, but likely explanations include problems parsing your /WEB-INF/web.xml file, or missing classes encountered when initializing application event listeners and filters.
Invalid application URL was specified
The URL for the directory or web application that you specified was not valid. Such URLs must start with file:, and URLs for a WAR file must end in ".war".
Invalid context path was specified
The context path must start with a slash character, unless you are referencing the ROOT web application -- in which case the context path must be a zero-length string.
No context path was specified
The path parameter is required.
List Currently Deployed and Installed Applications
http://localhost:8080/manager/list
List the context paths, current status (running or stopped), and number of active sessions for all currently deployed and installed web applications. A typical response immediately after starting Tomcat might look like this:
OK - Listed applications for virtual host localhost
/webdav:running:0
/examples:running:0
/manager:running:0
/:running:0
Reload An Existing Application
http://localhost:8080/manager/reload?path=/examples
Signal an existing application to shut itself down and reload. This can be useful when you've recompiled classes on an application that is not configured with the reloadable="true" attribute in its <Context> entry in $CATALINA_HOME/conf/server.xml, or when you've made other changes (such as to conf/web.xml) that are not automatically recognized by Tomcat.
If this command succeeds, you will see a response like this:
OK - Reloaded application at context path /examples
Otherwise, the response will start with FAIL and include an error message. Possible causes for problems include:
Encountered exception
An exception was encountered trying to restart the web application. Check the Tomcat 4 logs for the details.
Invalid context path was specified
The context path must start with a slash character, unless you are referencing the ROOT web application -- in which case the context path must be a zero-length string.
No context exists for path /foo
There is no deployed or installed application on the context path that you specified.
No context path was specified
The path parameter is required.
Reload note supported on WAR deployed at path /foo
Currently, application reloading (to pick up changes to the classes or web.xml file) is not supported when a web application is installed directly from a WAR file. It only works when the web application is installed from an unpacked directory. If you are using a WAR file, you should remove and then install the application again to pick up your changes.
Remove an Existing Application
http://localhost:8080/manager/remove?path=/examples
Signal an existing application to gracefully shut itself down, and then remove it from Tomcat (which also makes this context path available for reuse later). This command is the logical opposite of the /install command.
If this command succeeds, you will see a response like this:
OK - Removed application at context path /examples
Otherwise, the response will start with FAIL and include an error message. Possible causes for problems include:
Encountered exception
An exception was encountered trying to remove the web application. Check the Tomcat 4 logs for the details.
Invalid context path was specified
The context path must start with a slash character, unless you are referencing the ROOT web application -- in which case the context path must be a zero-length string.
No context exists for path /foo
There is no deployed or installed application on the context path that you specified.
No context path was specified
The path parameter is required.
Session Statistics
http://localhost:8080/manager/sessions?path=/examples
Display the default session timeout for a web application, and the number of currently active sessions that fall within ten-minute ranges of their actual timeout times. For example, after restarting Tomcat and then executing one of the JSP samples in the /examples web app, you might get something like this:
OK - Session information for application at context path /examples
Default maximum session inactive interval 30 minutes
30 - <40 minutes:1 sessions
Start an Existing Application
http://localhost:8080/manager/start?path=/examples
Signal a stopped application to restart, and make itself available again. Stopping and starting is useful, for example, if the database required by your application becomes temporarily unavailable. It is usually better to stop the web application that relies on this database, rather than letting users continuously encounter database exceptions.
If this command succeeds, you will see a response like this:
OK - Started application at context path /examples
Otherwise, the response will start with FAIL and include an error message. Possible causes for problems include:
Encountered exception
An exception was encountered trying to start the web application. Check the Tomcat 4 logs for the details.
Invalid context path was specified
The context path must start with a slash character, unless you are referencing the ROOT web application -- in which case the context path must be a zero-length string.
No context exists for path /foo
There is no deployed or installed application on the context path that you specified.
No context path was specified
The path parameter is required.
Stop an Existing Application
http://localhost:8080/manager/stop?path=/examples
Signal an existing application to make itself unavailable, but leave it deployed or installed. Any request that comes in while an application is stopped will see an HTTP error 404, and this application will show as "stopped" on a list applications command.
If this command succeeds, you will see a response like this:
OK - Stopped application at context path /examples
Otherwise, the response will start with FAIL and include an error message. Possible causes for problems include:
Encountered exception
An exception was encountered trying to stop the web application. Check the Tomcat 4 logs for the details.
Invalid context path was specified
The context path must start with a slash character, unless you are referencing the ROOT web application -- in which case the context path must be a zero-length string.
No context exists for path /foo
There is no deployed or installed application on the context path that you specified.
No context path was specified
The path parameter is required.
Undeploy an Existing Application
http://localhost:8080/manager/undeploy?path=/examples
WARNING - This command will delete the contents of the web application directory if it exists within the appBase directory (typically "webapps") for this virtual host . If you simply want to take an application out of service, you should use the /remove command instead.
Signal an existing application to gracefully shut itself down, and remove it from Tomcat (which also makes this context path available for reuse later). In addition, the document root directory is removed, if it exists in the appBase directory (typically "webapps") for this virtual host. This command is the logical opposite of the /deploy command.
If this command succeeds, you will see a response like this:
OK - Undeployed application at context path /examples
Otherwise, the response will start with FAIL and include an error message. Possible causes for problems include:
Encountered exception
An exception was encountered trying to undeploy the web application. Check the Tomcat 4 logs for the details.
Invalid context path was specified
The context path must start with a slash character, unless you are referencing the ROOT web application -- in which case the context path must be a zero-length string.
No context exists for path /foo
There is no deployed or installed application on the context path that you specified.
No context path was specified
The path parameter is required.
Executing Manager Commands With Ant
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<taskdef name="stop" classname="org.apache.catalina.ant.StopTask"/>
<taskdef name="undeploy" classname="org.apache.catalina.ant.UndeployTask"/>
<-- Executable Targets -->
<target name="compile" description="Compile web application">
... construct web application in ${build} subdirectory ...
</target>
<target name="install" description="Install web application"
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<install url="${url}" username="${username}" password="${password}"
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</target>
<target name="reload" description="Reload web application"
depends="compile">
<reload url="${url}" username="${username}" password="${password}"
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</target>
<target name="remove" description="Remove web application">
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</target>
</project>
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Try googling on how to sign your applet. The error you're getting can usually be solved by signing it.

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Last.java:1: package vg does not exist
import vg.*;
even if I change classapth variable as E:\javafiles\test or even E:\javafiles\test\vg
plz help me in this regard

You need to change where it is trying to find the 'vg' package. So, if your Last.java is in e:\javafiles, then you need to
import test.vg.*
e.g.
import test.vg.*;           // Change this line
public class Last
          public static void main(String robert[])
               Second d = new Second();
               First f = new First();
               if(f.m==0)
                    d.me0();
               if(f.m>f.n)
                    d.mgrn();
               if((f.n%2)==0)
                    d.neven();
               else
                    System.out.println("The value of n is Odd");
Alan

N95 maps problem plz help me

please any body can solve my problem?
i have n95
when i open gps application
then on the screen globe is not showning and no maps are showing on screen
only city names are showed
and after the closing of map application in apst there are type on screen
saving maps and data
but now nothing typed
plz help me

i am using latest firm ware
and using old maps application bcoz new beta 2.0 not showing my accurate position in pakistan
if i am in my city
the maps application shows u r 10 km from your city
but old version give me accurate position...

Having JSP problem plz help me

i make small proj with small DB
i have java bean to setter and getter of the fields in the table
so i have this Exception
Generated servlet error:
TabelBean cannot be resolved or is not a type
i search for error but i didn't find it >>>>plz help me

Did you import the class into the JSP?
<%@ page import="myPackage.MyClass" %>

Ps4 problem plz help ASAP

ps4 can ON got sound can control but no image and also the color on the top is white...

Sry for my bad english.... I have try other HDMI but still the same problem. The problem is when I turn on the ps4 the LED on top of the ps4 turn from blue to white. Then when it's started there no image the screen is black, but have sound and I can control it with my controller. I also try to plug in my HDMI from my laptop to the TV and there no problem what so ever.. Plz help :<

Report problem plz help

hi to all
Using form6i and run in client server. i cant solve this problem please help to all master :
I have a text item in forms and button. When i type the Customer_Name in text item then all names appears in reports, i want that when i type the name, only that name will appear .
Please check what is wrong with my code and steps.
In report wizard, query statement i put "Select * from S_customer"
then i call the report in forms..
Report Property pallette:
Other Parameters=Customer_Name
Query names=Select * from s_Customer where Customer_Name=:rep(the text item)
then in forms the button trigger is when button pressed.below is the code:
declare
v_Rep varchar2(100);
repid report_object;
Begin
repid := find_report_object('report');
SET_REPORT_OBJECT_PROPERTY(repid,REPORT_OTHER,’s_customer=’||:Dept.rep);
v_rep := run_report_object(repid);
end;
advance tnx to all

Hi,
You need to bulid a parameter list.
This is a code sample to run a report from Forms:
(Place it on a button when-button-pressed trigger, to run the report).
DECLARE
     repid REPORT_OBJECT;
     v_rep VARCHAR2(100);
     rep_status VARCHAR2(20);
-- this is the parameter list
     pl_id ParamList;
pl_name VARCHAR2(10) := 'tempdata';
BEGIN
-- try to find the parameter list
pl_id := Get_Parameter_List(pl_name);
          IF Id_Null(pl_id) THEN
               -- if parameter lsit does not exist
               -- create it
          pl_id := Create_Parameter_List(pl_name);
          IF Id_Null(pl_id) THEN
          Message('Error creating parameter list '||pl_name);
          RAISE Form_Trigger_Failure;
          END IF;
          ELSE
          Message('Parameter list '||pl_name||' already exists!');
          -- destroy it to clear old parameters
          -- and create it again;
          destroy_parameter_list(pl_id);
          pl_id := Create_Parameter_List(pl_name);
          END IF;
Add_Parameter(pl_id,'p_customer_name',TEXT_PARAMETER,:customer.cust_name);
-- add as many parameters as needed
-- finally run the report passing your parameter list
     repid := FIND_REPORT_OBJECT('report4');
     v_rep := RUN_REPORT_OBJECT(repid, pl_id);
               Exception
                    when others then
                    Message('Error running report. '||sqlerrm, acknowledge);
END;
Also, you need to create the parameter in your report:
1.- Open your report on reports builder.
2.- Find the "Data Model" node, and the "User parameters" node.
3.- Create a parameter: p_customer_name
4.- Modify your sql from:
Select * from S_customer
TO:
Select * from S_customer
where Customer_Name=:p_customer_name;
If you want this parameter to be optional, check the reports online help on "Lexical References".
Have fun,
Hugo

Basic servlet problem plz help me

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