Want to BusinessCalendar in wli.jar

Hi,
I am working on a WLI to BPEL migration project. in BPEL there is no business calendar by default(Have to take BPM Suite for this). so I want to use the same wli.jar and create my own business calendar.
can any one give me some idea for this. if refer some sample code, will be appreciated
Thanks

I have am having the same issue. Mfl files that work perfect in sp3 do not work in sp4. I am getting an illegal state exception. Client is dictating migration to sp4. What other integration issues will I have in moving to sp4.
Michael

Similar Messages

Want help to create jar file

Hi....
To Run my project user should install some software�s.. so I want to create a JAR file
Using that user can install my software�s.
I have created a JAR file using � jar cvfm Test. jar manifest.mf gsv48w32.exe jdk-1_5_0_06-windows-i586-p.exe � it is working fine. Only when those two .exe file are in the directory where my jar file is executing
But I want to give only Test.jar to users I don�t want to give gsv48w32,Jdk 1.5.
Is there any way to create a jar file.
Thanks
Graj

i am sending the code i used
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import java.awt.Container;
public class DefaultSample {
public static void main(String args[]) {
     JFrame frame = new JFrame("Default Example");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
ActionListener actionListener = new ActionListener() {
public void actionPerformed(ActionEvent actionEvent) {
          if(actionEvent.getActionCommand()=="press this button if u want to install Gsview")
               try{
               Runtime.getRuntime().exec("gsv48w32.exe");
                    catch(Exception e)
          else
               try{
               Runtime.getRuntime().exec("jdk-1_5_0_06-windows-i586-p.exe");
                    catch(Exception e)
JPanel panel = new JPanel();
JButton defaultButton = new JButton("press this button if u want to install Gsview");
defaultButton.addActionListener(actionListener);
panel.add(defaultButton);
JButton otherButton = new JButton("press this button if u want to install java 1.5");
otherButton.addActionListener(actionListener);
panel.add(otherButton);
     Container contentPane = frame.getContentPane();
contentPane.add(panel);
frame.getRootPane().setDefaultButton(defaultButton);
frame.setSize(700,600);
panel.setVisible(true);
frame.setVisible(true);
}

Using WLST: Unable to create WLI Timer Event Generator

Hello,
I'm trying to create a WLST script, whcih will create Timer Event Generator on WLI 9.2 MP2.
Though to some extent script runs perfect, but it gives error when calling MBean egCfgMBean = getTarget("TimerEventGeneratorss/TimerEventGenerators")
Here is my script:-
import weblogic.Deployer
import com.bea.wli.mbconnector.timer as timereggen
import com.bea.wli.mbconnector.file as fileeggen
import com.bea.wli.management.configuration as wlicfg #Must have wli.jar in classpath
import java.lang.Boolean as bool
import jarray
import sys
print 'Starting the Timer Event Generation Configuration script .... '
if connected != 'true':
print 'Connecting to weblogic server .... '
connect(userName,passWord,URL)
else:
print 'Connected'
try:
print "Creating Timer EG ", timerEgName
timereggen.TimerConnGenerator.main(["-inName", timerEgName,"-outfile", domaindir + "/" + "WLITimerEG_" + timerEgName + ".jar"])
#timereggen.TimerConnGenerator.main(["-inName", timerEgName,"-outfile", domaindir,"-destJNDIName",jndiName])
#timereggen.TimerConnGenerator.main(["-inName", timerEgName,"-outfile", domaindir])
#wlst.config()
custom()
#egCfgMBean = wlst.getTarget("TimerEventGenerators/TimerEventGenerators")
egCfgMBean = getTarget("TimerEventGeneratorss/TimerEventGenerators")
egMBean = egCfgMBean.newTimerEventGenConfigurationMBean(timerEgName)
#egMBean = cmo.getTimerEventGenConfigurationMBeans()
cData = jarray.zeros(1, wlicfg.TimerEventGenChannelConfiguration)
print 'pass one'
cData[0] = wlicfg.TimerEventGenChannelConfiguration()
cData[0].setChannel(channel)
cData[0].setEffective(effectiveTime)
#cData[0].setExpiry(expiryTime)
cData[0].setFrequency(frequency)
cData[0].setMessageContent(message)
cData[0].setCalendarName(calendar)
cData[0].setPublishAsUser(publishAsUser)
egMBean.setChannels(cData);
appName = "WLITimerEG_" + timerEgName
deploy( appName, domaindir + "/" + appName + ".jar", adminServerName, "nostage" )
cd("Applications/" + appName)
set("LoadOrder", 1500)
cd("../..")
print "script returns SUCCESS"
except:
print "ERROR: configuration"
#dumpStack()
# Finished
print 'Disconnecting from server...'
disconnect('y')
print 'Finished.'
exit()
I really need some help to fix this issue.
Thanks
dig

Hi,
RDBMS Event Generator Channel Rule Definition
When you are creating channel rule definitions in the WebLogic Integration Administration Console, it is recommended that you do not use the Back button if you want to resubmit the details on a page.
You should always use the navigation links provided and create a new channel rule definition.
http://download.oracle.com/docs/cd/E13214_01/wli/docs85/deploy/cluster.html
http://download.oracle.com/docs/cd/E13214_01/wli/docs81/relnotes/relnotesLimit.html
http://otndnld.oracle.co.jp/document/products/owli/docs10gr3/pdf/deploy.pdf
This problem has been seen in the past when defining the channel rule for an RDBMS Event Generator if schema name was specified with the incorrect case (i.e. lowercase when it should have been uppercase or vice versa). To that end, it is suggested to change the case of the schema when creating the channel rule
Regards,
Kal

How to package an application as a JAR file?

I want to package an executed JAR file,how to do?
"jar cvf jar_name class_name"? But it can't run,:( help me.
Thanks in advance.

Suppose your main class call MyMainClass. You need to create a file called "mymanifest". In the mymanifest file, you need to include following line:
Main-Class: MyMainClass
Then you need to jar your jarfiles by:
jar cvfm classes.jar mymanifest -C foo/ .
After this, you can run your jar file by java -jar classes.jar.

How to convert .class into .jar file

Hi,
How to convert .class into .jar file

jsf_VWP5.5.1 wrote:
Hi,
How to convert .class into .jar fileFrom a command prompt, cd to the location of your .class file(s).
If you want to create a simple jar, use: jar -cf Whatever.jar Whatever.class
If you want to compile all .class files in a directory into a jar, use *.class instead.
Now, I'm going to assume you want to create an executable jar... here's how to do that:
1) Create a blank text file; for this example, lets call it main.txt.
2) In the first line of main.txt, type: Main-class: Whatever ('Whatever' should be the name of the class in your program where the main() method is located)
3) Press enter to go to the next line (someone please correct me if I'm wrong, but if you don't insert the line break/CR after the Main-class: statement, this will not work... in my experience, this is true)
4) Make sure you save this file in the same directory as your .class file(s).
5) Type: jar -cmf Whatever.jar main.txt Whatever.class
...and that's about it. For more information on the usage of the jar command and to understand the switches (such as -cmf), try jar --help.
Hope that helps.

How do I protect my JNLP, my JARs etc. (with Basic Authentication)???

hi all,
i know that there is a FAQ ( [see here|http://lopica.sourceforge.net/faq.html#obfuscate] ) answering a related question with "You can use an obfuscator...". ok, but is there really no other solution?
this is the simplified folder structure of my application on the server:
[application]
[etc]
    xyz.xml
[jars]
    myapp.jar
launch.jnlp
website.jsp
initial start and basic authentication:*
my first idea was to secure everything underneath "application" with basic authentication via my web.xml (yes, i'm aware of the security concerns). this means everybody can access my website (here: website.jsp) which contains a start button that links to "launch.jnlp". as soon as the user clicks on it, the browser opens its standard authentication dialog since launch.jsp is in a protected area. after entering the correct credentials the jnlp-file is downloaded and java web start takes over control. first of all it seems as it tries to access the same jnlp-file again (??? --> probably in order to check for changes in the jnlp file --> this is certainly not the case for the initial startup) and then wants to download the relevant jar (myapp.jar). because both resources are protected jws opens its own basic authentication dialog where i have to enter the same credentials the second time. as far as i know, there is no solution to pass the credentials between the browser and the jvm.
second start and basic authentication:*
if the user starts my application for the 2nd, 3rd, ... time via desktop-link (set in jnlp-file) there is no need for accessing my website with a browser. therefore only the authentication dialog of jws gets displayed. so far, so good!
and now the actual problem:*
during runtime my application (signed with verisign certificate and having all permissions) uses commons-vfs and commons-httpclient to access resources on the same server (e.g. etc/xyz.xml). since they're underneath the protected "application" directory as well, my application needs the same credentials the user already entered in the authentication dialog of jws. now i could retrieve these credentials by calling Authenticator.requestPasswordAuthentication() within my application and passing them to vfs and httpclient. however, doing so opens up jws' authentication dialog again. grrr!!! is there a way to prevent this?
related thougts:*
i know i could disable jws' default Authenticatior and set my own Authenticator which might be able to return already entered credentials without opening the dialog a second time. however, it seems that even with <property name="javaws.cfg.jauthenticator" value="none" /> jws still opens its own dialog when acessing the JNLP file and the relevant JARs during the startup/download phase. of course, who else if not jws could handle that phase? my application might not even be downloaded at this point. so i guess setting my own Authenticator would not be a solution either (at least not if i want to secure my jnlp and my jars, too). quite the contrary, it would have to open another dialog... :-(
my current solution:*
for the moment i use jws' default Authenticatior which allows me to easily protect all my stuff on the server side (jnlp, jar, etc). i can live with the two login dialogs at the initial startup. and instead of querying the credentials from jws' default Authenticatior at runtime, i set two system properties for username and password in the (protected) jnlp-file, query them at runtime and hand it to vfs and httpclient. this prevents the 2nd (or 3rd) dialog but is definitely not a great solution. most of all i'm not happy with the fact that this somehow "destroys" the container-based security advantage of easily configuring authorized users via a separate mechanism e.g. tomcat-users.xml. now there has to be one master-password that has to be set in the jnlp-file! grrr!
a possible alternative:*
i'm not sure but would it be better to secure everything with form-based authentication on the website, and dynamically generate username and password into the jnlp-file? but what happens when the admin changes the password on the server and the user starts its application via desktop-link??? in case of basic authentication i think jws would popup the login dialog again. however, if i use the old username and password generated into the jnlp it won't work. i think the user then has to access the website again. this is not good at all! :-(
the only real solution:*
should i write a small application which can be downloaded by everybody and on startup queries the user's credentials, validates them with the help of our server, and uses the javax.jnlp-api to download the secured JARs of my real application? this seems so much overkill! does anybody have experiences with this approach? how difficult is it to implement the whole download/update stuff with javax.jnlp?
WHAT HAVE I MISSED???
AM I COMPLETELY WRONG???
WHAT IS THE EASIEST WAY???
AND WHAT IS THE BEST WAY???
thank you so much,
stephan

Not sure, whether I understood correctly, what you wanna do - but up to now I can't see any problem.
if you have a structure like this:
/ctxroot/
       launch.jnlp
       /app/
           *.jar
           *.whateveryou may use in your web.xml:
     <servlet>
          <servlet-name>JnlpDownloadServlet</servlet-name>
          <servlet-class>jnlp.sample.servlet.JnlpDownloadServlet</servlet-class>
     </servlet>
     <servlet-mapping>
          <servlet-name>JnlpDownloadServlet</servlet-name>
          <url-pattern>*.jnlp</url-pattern>
          <url-pattern>/app/*</url-pattern>
     </servlet-mapping>
     <security-constraint>
          <web-resource-collection>
               <web-resource-name>Application</web-resource-name>
               <url-pattern>/app/*</url-pattern>
               <http-method>GET</http-method>
               <http-method>POST</http-method>
          </web-resource-collection>
          <auth-constraint>
               <role-name>bla</role-name>
               <role-name>fahsel</role-name>
          </auth-constraint>
          <user-data-constraint>
               <transport-guarantee>CONFIDENTIAL</transport-guarantee>
          </user-data-constraint>
     </security-constraint>
     <security-constraint>
          <web-resource-collection>
               <web-resource-name>Subscription</web-resource-name>
               <url-pattern>*.jnlp</url-pattern>
          </web-resource-collection>
          <user-data-constraint>
               <transport-guarantee>CONFIDENTIAL</transport-guarantee>
          </user-data-constraint>
     </security-constraint>
     <login-config>
          <auth-method>BASIC</auth-method>
          <realm-name>whatever-realm</realm-name>
     </login-config>
     <security-role><role-name>bla</role-name></security-role>
     <security-role><role-name>fahsel</role-name></security-role>
...Than you may use the Service stuff like:
     BasicService bs = (BasicService)ServiceManager.lookup("javax.jnlp.BasicService");
     URL codeBase = bs.getCodeBase();
     URL pu = new URL(codeBase.toString() + "whatever.bla");
     HttpURLConnection res = (HttpURLConnection) pu.openConnection();
     res.setInstanceFollowRedirects(true);
     res.setRequestMethod("GET");
     res.setConnectTimeout(10 * 60 * 1000);
     res.connect();
     String enc = res.getContentType();
...Where is the problem? If you wanna intercept certain "calls" to an app resource, just use a filter, which decides, whether to answer the request directly by itself or to pass it to the JnlpDownloadServlet ...

Can I use a .jar file as a part of my program?

i.e. Can I import compiled classes from a .jar file.
I want some functions in the .jar file. Would this be ok? If yes, how? I tried to import them by a statement like this:
import com.something.otherthing.xxx;
But it doesn't work! My environment is JBuilder.
Thanks in advance.

If you want to use stuff in a jar, then add the jar to your classpath. Then use the import statement as you normally do (nothing special is needed there).

How to run a JAR file in Unix system?

hi there
ca anyone tell me how to run a JAR file in unix system or X window, thank you

You want to create an executable JAR file? You do it in the following way.
Create a manifest file such as manif.txt and the contents should contain
Main-Class: foo
assuming foo is the name of your main class. Then create the jar as follows
jar cvfm foo.jar manif.txt foo.class
I hope that helps you!
you can find more info here http://java.sun.com/docs/books/tutorial/jar/

Loading a jar via a custom classloader

Hi,
I have written a custom class loader that allows me to load a compiled java program as a collection of class files at runtime.
This is nice however I now need to consider the runtime execution of more complex java programs that have custom library dependencies.
This means loading a .jar library into the classloader. I can get the contents of a jar and load specific classes by name via reflection but I want to load the entire jar into the classloader so that its contents can be used 'as needed' much like a jar on the system classpath.
Is this possible? If so I would like to know how as I have been struggling with this problem and cannot see a solution.
Regards,
Stephen

However I still don't understand why you need to
actually load all those classes initially. Afterall,
URLClassLoader (which sounds a lot like what youare
describing) only loads classes as needed.i have just built a swing app that accesses an oracle
database, i jared together all the classes, and i did
something in the manfest file so that you can just
double clisk the jar and it fires up like an exe.
doing it this way everything is fine except it cannot
access the database, the reason is those oracle
classes are not loaded, even they are on the path - i
can run the app using a batch file but i dont like it
as it opens up a dos window. this is an example, as i
was told, where it is necessary to load all thoses
oracle database classes initially. Dear, daFei.
I believe that you are getting confused between the way the system will ignore that CLASPPATH environment variable when you run a java application packaged as a jar file with the -jar switch (the classpath for the jar can be set in the manifest) and what I am attempting to-do which is to run a compiled java program at runtime and dynamically load any dependant libraries.
Stephen

How to dynamically load jar files - limiting scope to that thread

Dynamically loading jar files has been discussed a lot. I have read a quite a few posts, articles, and demo code for doing just that. However, I have yet to find a solution to my problem. Most people modify their system class loader and are happy. I have done that and was happy for a time. Occasionally, you will see reference to an application server or tomcat or some other large project that have successfully been able to load and unload jar files, allow for dynamic deployment of code, etc. However, I have not been able to achieve similar success; And my problem is much less complicated.
I have an application that executes a thread to send a given file/message to a standard JMS Server Queue. Depending on the parameters selected by the user, this thread may need to communicate with one of a number of JMS Servers, ie. JBoss, WebLogic, EAServer, Glassfish, etc. All of which can be done with the same code, but each needs to load their own flavor of JMS Client Jar files. In this instance, spawning a separate JVM for each communication would work from a classloader perspective. However, I need to keep it in the family and run under the same JVM, albeit each JMS Server Connection will be created and maintained in separate Threads.
I am close, I am doing the following...
1. Creating a new URLClassLoader in the run() method of each thread.
2. Set this threads contextClassLoader to the new URLClassLoader.
3. Load the javax.jms.JMSException class with the URLClassLoader.loadClass() method.
4. Create an initialContext object within this thread.
Note: I read that the initialContext and subsequent conext lookup calls would use the Thread�s
contextClassLoader for finding/loading classes.
5. Perform context.lookup calls for a connectionFactory and Queue name.
6. Create JMS Connection, etc. Send Message.
Most of this seems to work. However, I am still getting a NoClassDefFoundError exception for the javax.jms.JMSException class ( Note step #3 - tried to cure unsuccessfully).
If I include one of the JMS Client jar files ( ie wljmsclient.jar for weblogic ) in the classpath then it works for all the different JMS Servers, but I do not have confidence that each of the providers implemented these classes that now resolve the same way. It may work for now, but, I believe I am just lucky.
Can anyone shine some light on this for me and all the others who have wanted to dynamically load classes/jar files on a per Thread basis?

Thanks to everyone - I got it working!
First, BenSchulz' s dumpClassLoader() method helped me to visualize the classLoader hierarchy. I am still not completely sure I understand why my initial class was always found by the systemClassLoader, but knowning that - was the step I needed to find the solution.
Second, kdgregory suggested that I use a "glue class". I thought that I already was using a "glue class" because I did not have any JMSClient specific classes exposed to the rest of the application. They were all handled by my QueueAdmin class. However...
The real problem turned out to be that my two isolating classes (the parent "MessageSender", and the child "QueueAdmin") were contained within the same jar file that was included in the classpath. This meant that no matter what I did the classes were loaded by the systemClassLoader. Isolating them in classes was just the first step. I had to remove them from my jar file and create another jar file just for those JMSClient specific classes. Then this jar file was only included int custom classLoader that I created when I wanted to instantiate a JMSClient session.
I had to create an interface in the primary jar file that could be loaded by the systemClassLoader to provide the stubs for the individual methods that I needed to call in the MessageSender/QueueAdmin Classes. These JMSClient specific classes had to implement the interface so as to provide a relationship between the systemClassLoader classes and the custom classLoader classes.
Finally, when I loaded and instantiated the JMSClient specific classes with the custom classLoader I had to cast them to the interface class in order to make the method calls necessary to send the messages to the individual JMS Servers.
psuedu code/concept ....
Primary Jar File   - Included in ClassPath
Class<?> cls = ClassLoader.loadClass( "JMSClient.MessageSender" )
JMSClientInterface jmsClient = (JMSClientInterface) cls.newInstance()
jmsClient.sendMessage()
JMSClient Jar File - Loaded by Custom ClassLoader Only
MessageSender impliments Primary.JMSClientInterface{
    sendMessage() {
        Class<?> cls=ClassLoader.loadClass( "JMSClient.QueueAdmin" )
        QueueAdmin queueAdmin=(QueueAdmin) cls.newInstance()
        queueAdmin.JMSClientSpecificMethod()
    }

How to access files in a jar file?

Can anyone tell me how to access a file contained in my jar file?
I have about 15 classes jarred and deployed as an applet. I want to include in the jar file some .gif files to be used as icons in a tree view. Rather than trying to access them locally with all the security headaches this brings, can I not simply jar them as resources and point to them in my code?
Any help much appreciated,
Thanks in advance,
Chris

Hello Chris,
Please read this note taken directly from Sun, from their Java Tutorial/Creating a GUI with Swing/Using Other Swing Features/How to use Icons/Specifying the Image Source (whew!)
Note: Applets are supposed to be able to load images from JAR files.
Currently, however, some browsers can't read images from a JAR file,
although they do successfully get classes from a JAR file.
With our applets, we currently hedge our bets by both putting
the image files in the applet's archive file (the JAR file containing
the applet's class files) and by putting the image files in the file
system on the server.
*/So......Do you want to take a chance?
-Ron

Help needed with jar file

hi, first of all sorry if my post is in wrong forum...but my application is done using swing so i am posting this here....and regarding my question...
I have made an GUI using Java swings and my application is working fine. Now i want to make an executable jar file for my GUI. I have read some tutorilas on making jar files and this is what i have done...
i have created a manifest file called mainClass.txt which has
Main-Class: MainWindow ,where MainWindow is my main class name.
Then i ran the jar utility with this command line:
jar cmf mainClass.txt example.jar *.class
With this line, I told jar to create a JAR file (option c) with modifications to the manifest file (option m) as specified within mainClass.txt, naming the JAR file (option f) as example.jar and including everything that matches the pattern *Class
everything is file till now but my problem is ...I have some library files from JFreechart software included in my GUI to generate barcharts..How can i include these library files in my example.jar file..
Kindly help me
Thanks
byee

I had this problem too. I ran my program out of JCreator and it worked flawlessly. I jarred it up into and Executable Jar and I would get a runtime error explaning I have not included the correct libraries.
What I did was look at the error, for example say it said something like:
org.uhoh.PathSys ClassDefNotFound (or something similar to this)
What I did was extract the library that contained that class file. Then in my project file where I kept my classes I made the folder org, then in org I made uhoh. Inside uhoh I copied over PathSys.class.
I hope I addressed the problem you speak of. I am only a novice but this is how I figured it out. If anyone knows a better way let us know =D

Third party dlls and jars with in jars.

Hi,
I have a application which uses several 3rd party jars and dlls.I want to create a executable jar for the application .I added the external jars using fat jar eclipse plugin. Iam able to run the jar on my system successfully.But on other systems the application doesnot launch as the dlls are not avaiable which is fairly understandable. It gives the following exception 'JarClassLoader: Warning: Unable to load native library: java.lang.NullPointerException'.Now i need to include these dlls into the jar so that i can distribute the application as a single jar and launch double clicking it.I know expecting dlls ignores the cross platform nature of java but i need it.please give me some idea on how this can be done.
Thanks in advance

Hi,
I have a application which uses several 3rd party jars and dlls.I want to create a executable jar for the application .I added the external jars using fat jar eclipse plugin. Iam able to run the jar on my system successfully.But on other systems the application doesnot launch as the dlls are not avaiable which is fairly understandable. It gives the following exception 'JarClassLoader: Warning: Unable to load native library: java.lang.NullPointerException'.Now i need to include these dlls into the jar so that i can distribute the application as a single jar and launch double clicking it.I know expecting dlls ignores the cross platform nature of java but i need it.please give me some idea on how this can be done.
Thanks in advance

Help with JAR Files

OK, folks, I need some help here...
And I have researched on this prior to this post, but I still don't get it.
I have a simple application in Reminder.java file. When I compile it, I get Reminder.class and Reminder$ReminderThread.class, because I have an inner class.
I place those files in Reminder directory. I want to make an executable JAR file, so I made a manifest file outside the Reminder directory that contains these lines
Manifest-Version: 1.0
Main-Class: Reminder.Remindersince the Reminder.class is within the Reminder directory, I understood I had to have a prefix "Reminder."
In the command line, I type
jar cmf manifest Reminder.jar Reminder/Reminder.class Reminder/Reminder$ReminderThread.classAnd I do get a Reminder.jar file, but when I double-click on it, I get a popup saying "Could not find the main class. Program will exit!"
So, what am I doing wrong and how can I fix this? As I said, I have researched, but I can't understand what went wrong nor how to fix the problem.
Any help will be greatly appreciated.

Never mind, I solved it, I was missing a carriage return in my manifest file. I feel so stupid now...

Unable to use javac or jar commands

Hi all,
I've been using my IDE to compile and run my programs. However, when I want to use -javac or -jar commands in my command prompt, it doesnt work.
The error is :
'javac' is not recognised as an internal or external command,
operable program or batch file
Same goes for jar
-java works for me. Why is that so? I hope anyone can give me solution.
Note : I'm on windows vista
Another question :
I've been using JMF (Java Media Framework) to develop a simple audio player. However it can be run on my pc. What happens if I try to run the program at another pc, will it still work? The other pc will not have JMF installed, but will have JRE to run java apps. If it cannot be run on the other pc, is there any solution?
Thank you for your kind assistance.
Edited by: TrAnScEnD3nT on Sep 30, 2007 10:18 PM
Reason : Sorry I have mixed up java and javac, I've corrected it.

Mainta? That's my favourite!This time...
In very general terms the PATH is a system variable that is maintained and used by your operating system or shell (not Java) to locate executable files. So, for instance, if you type the command:
>writeit will be the PATH that Windows uses to locate the write.exe word processor.
The directory containing the Java tools - java.exe, javaw.exe, jar.exe, appletviewer.exe etc - very commonly goes into the PATH variable.
The classpath is a list of locations that Java uses to locate classes (as you said). It is used by Java and not your operating system. It is commonly (but not always) set each time you use one of the Java tools. There is a -cp switch that lets you do this. For instance a common command to compile a file would be
>javac -cp . HelloWorld.javaThe "-cp ." bit means "the classpath shall be the current directory".
Setting a particular classpath does not, in general, affect the "built in" classes of Java, so you don't have to worry about this. If you search the documentation that came with your distribution you will find the exact rules for "how classes are found": but to begin with the important thing is that any classes you write must be included in the classpath which can be specified as part of the commands to compile or run your code.

Want to BusinessCalendar in wli.jar

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