Help Needed: Operation on jar files!

Hi,
I am trying to extract files from jar file using the java code. Does any one knows how can one do this using java code.
Or
is there any facility that I can use the unjar command inside the java code to extract it. I wonder about this!
Or
does java povide Java APIs provides facility for this. I have gone thourgh java.util.jar package but am not to get how can this be used for the above purpose?
Thanks.
Huzefa

Please don't cross post.
I've answered it here:
http://forum.java.sun.com/thread.jsp?forum=4&thread=307789

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Help on creating a jar file

I created a game and I need help on creating a jar file.
I know the basics such as having a root folder, a manifest file and what goes in it, etc. And I know some programs like JGrasp can do the jar file for you, but it tells me it cannot find the main class. Does anybody know another program that can do that for me, or can i easily do it manually?
any help is appreciated

You can use jar.exe to create jar files.
Just type jar and hit enter on the console it will give the help message about parameters.
if you do not really need to put any spesific menifest information. Just zip the files using some zip software and change the extenction to jar. (Thats what I am doing most of the time)

An error occured while trying to copy the needed DB driver jar files

When I try to run my web app, I see this error in the Output window.
Creator will also put up a window essentially saying that I don't have a particular
data source. But I do have that very data source there.
The error seems to be pointing to this line in my build-impl.xml file
<nbdeploy debugmode="false" clientUrlPart="${client.urlPart}" forceRedeploy="${forceRedeploy}"/>

I'm using postgresql-8.1-404.jdbc3.jar
I started this project with Creator2, so I don't know if the nbproject files
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Here's the output text:
init:
deps-module-jar:
deps-ear-jar:
deps-jar:
Copying 1 file to /home/tc/dev/oms/src
library-inclusion-in-archive:
library-inclusion-in-manifest:
Copying 1 file to /home/tc/dev/oms/build/web/WEB-INF/classes
load-project-properties:
installGraphics:
installLayouts:
compile:
compile-jsps:
pluto-hack-web-xml-run:
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An error occured while trying to copy the needed DB driver jar files.
Deployment error: An error occured while trying to copy the needed DB driver jar files.. See the server log file for details.
Exception=Deployment error: An error occured while trying to copy the needed DB driver jar files.. See the server log file for details.
Deployment error: An error occured while trying to copy the needed DB driver jar files.. See the server log file for details.
at org.netbeans.modules.j2ee.deployment.devmodules.api.Deployment.deploy(Deployment.java:198)
at org.netbeans.modules.j2ee.ant.Deploy.execute(Deploy.java:75)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:275)
at org.apache.tools.ant.Task.perform(Task.java:364)
at org.apache.tools.ant.Target.execute(Target.java:341)
at org.apache.tools.ant.Target.performTasks(Target.java:369)
at org.apache.tools.ant.Project.executeTarget(Project.java:1214)
at org.apache.tools.ant.Project.executeTargets(Project.java:1062)
at org.apache.tools.ant.module.bridge.impl.BridgeImpl.run(BridgeImpl.java:234)
at org.apache.tools.ant.module.run.TargetExecutor.run(TargetExecutor.java:242)
at org.netbeans.core.execution.RunClassThread.run(RunClassThread.java:125)
Caused by: An error occured while trying to copy the needed DB driver jar files.
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... 10 more
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Need to download JAR files from more than ONE HTTP-server ?

Hello,
We have a need to download JAR files for an application, from more than ONE HTTP-server, i.e. any specified HTTP-server in an extremely secure network.
Does a solution exist for this requirement ? Is it possible to design a solution our selfes for this problem ?
Best Regards
Peter

We have a need to download JAR files for an
application, from more than ONE
HTTP-server, That can be done using the extension element
from within the resources element of the main JNLP.
http://java.sun.com/j2se/1.5.0/docs/guide/javaws/developersguide/syntax.html#resources
The extension element should refer to another JNLP
(on the other site) that refers to the Jars. The jar files
in any such (foreign) JNLP need to be signed, and the
JNLP files should declare itself as a <component-desc>.
For any level of detail on using extensions/components,
download the spec. mentioned in the second paragraph
of that section linked above. Unfortunately I can find no
web browsable form of the information.
Here is an example though..
http://www.javasaver.com/testjs/jws/04/glclock.jnlp
This (sandboxed) screenaver demo comes off my
javasaver site. It refers to the JOGL API via an
extension element in the JNLP, that points directly
to the JOGL site. You might notice the security
warning that is produced mentions..
Name: JOGL
Publisher: sun microsystems, inc
Source: https://jogl.dev.java.net
..i.e. any specified HTTP-server in an
extremely secure network. I do not know about an extremely secure network,
but if it is OK to launch a normal JNLP for an
application with a 'main()' from the server, I guess
it should be OK to launch extensions off it - you
might need to set up some tests.

Plz help....JAR file needed.......

Hi Friends,
I want to use the IUrlGeneratorService and IPortalUrlGenerator classes for a URL generation task. But I cannot find the JAR file having these classes. I tried finding com.sap.portal.appintegrator.sap.bwc_api.jar in my eclipse/plugins but could not find it.
Where can I find this JAR, or any other JAR having the files I need?
Plz help.

Hi,
You can find jar files from this link also
<a href="http://www.alphaworks.ibm.com/aw.nsf/reqs/jarclassfinder">Jar Files</a>
And check in your portalapps folder the name of the jar file for urlgenerator is bc.rf.global.service.urlgenerator_api.jar.
Regards,
Venkatesh.K.

Help with creating a jar file

hi sorry if this is not the place to post the topic but was not sure where to post it.
i have make an application that has some images and a database but i would like to make a "exe" or somthing so that the client dose not have to open an ide and click run. they can just double click on somting. am not sure about how most of you distrbute your apps. can you help me please.
the client will be useing windows 95.
i know that a jar file can do this but i am not sure on how to change the refrences in the code to include the images and every thing. and how would i go about getting it into jar form
thanks nibur

You can create an executable jar.
Note that even if you do this, the user will need to have a JRE installed on their machine for this to run.
Here's how you can make this executable jar:
Replace all code that refers to the filesystem (like if you do "File f = new File("c:\myDirectory\file.txt");") to use resources:
http://java.sun.com/j2se/1.4.2/docs/guide/resources/index.html
Create a manifest file that has a Main-Class: attribute.
Then use the "jar" tool to create the jar:
http://java.sun.com/j2se/1.4.2/docs/tooldocs/windows/jar.html
That doc has "see also" links at the bottom that can tell you about executable jars and manifest files.
If you're using an IDE, the IDE probably has a tool to create jars for you. In Eclipse, it's under File -> Export. Check your IDE's docs for details.

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We had a problem with the last Oracle patch in that it tried to extract from a jar file using the "jar" executable. But the jar executable is not installed on the server where we have JRE 1.4
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Thanks for your replies.
I know that a jar file is like a zip file but I'm asking, "Can you download just the jar.exe without downloading the JDK?"
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We had a problem with the last Oracle patch in that it tried to extract from a jar file using the "jar" executable. But the jar executable is not installed on the server where we have JRE 1.4
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Let say, there are additional classes in a .jar file
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Need response asap. by Today. TQ

help...jar... wrote:
Let say, there are additional classes in a .jar file
How can I add it to my java program so that it can be recognized/used in the java program?
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Help To Create a Jar File

hi there
i wanna create a exe file so i am trying to use jar file.
I am new at creating jar files, my application has a main file and other java files, i am using other java files in my main file my concern is can i create a jar file including all the files and when i run jar file i want to complie java files, i really appreciate if anyone can help me out creating a jar file to compile and execute java files

http://java.sun.com/j2se/1.4.2/docs/guide/jar/index.html

Help -- Trying to create JAR file but not working

Hi everyone
I have created a rather noddy Java program that consists of 4 JComboBox's and 1 JButton on a JFrame.
When the button is clicked a text file is generate with the options that have been selected.
There are severial files that the program uses for this:
gcc.java
OutToFile.java
gccConfirm.java
MyNewWindow.java
main.java
I am using Jcreator and so must use the command line to create the Jar file.
I have never done a jar file before so I did an example with a hello world program and got it working now problem. I did the same for this program and the JAR file is generated without error. I double click on the JAR file to run the application, but nothing happens. I can see the application running in memory but nothing loads on the screen. However if I run it from the command line using Java -jar gcc.jar then everything is ok.
can anyone help me here?
thanks in advance

If you run you .jar from the command line (a shell in unix speak) there
already is a console where your java program can send it's System.out
stuff. Right click on your .jar and select 'properties' (or similar). Note
that your .jar is run by 'javaw'. This executable is similar to the 'java'
executable except that it doesn't open a console for you. Change the
'javaw' command to 'java' and voila, there's your console again.
kind regards,
Jos

URGENT Help for applet with JAR file in Netscape

I am having Applet with few classes
Html is in /www directory
and all class files are in /www/javaclassfiles
I jared all javaclassfiles with following command
c:\www\javaclassfiles>jar -cvf sample.jar TaxPaymentAppletForm.class *.class
where sample.jar is my jar file and TaxPaymentAppletForm.class is the main applet class file.
THEN I DELETED ALL CLASS FILES & KEPT ONLY SAMPLE.JAR FILE ON SERVER
My html code is like below:
<APPLET CODE="TaxPaymentAppletForm" ARCHIVE="sample.jar" CODEBASE="JavaClassFiles" WIDTH=460 HEIGHT=400></APPLET>
The things are running on IE properly, but not on Netscape. Netscape is giving following error :
java.io.IOException: <null>
at netscape.net.URLConnection.connect(Compiled Code)
at netscape.net.URLConnection.getInputStream(Compiled Code)
* at netscape.applet.AppletClassLoader.grabArchiveFile(Compiled Code)
at netscape.applet.AppletClassLoader.openArchive(Compiled Code)
at netscape.applet.AppletClassLoader.openArchive(Compiled Code)
at netscape.applet.AppletClassLoader.<init>(Compiled Code)
at netscape.applet.AppletClassLoader.getClassLoader(Compiled Code)
at netscape.applet.DerivedAppletFrame$LoadAppletEvent.dispatch(Compiled Code)
at java.awt.EventDispatchThread$EventPump.dispatchEvents(Compiled Code)
at java.awt.EventDispatchThread.run(Compiled Code)
at netscape.applet.DerivedAppletFrame$AppletEventDispatchThread.run(Compiled Code)
# Unable to load archive http://nearbuy_server:90/iras/JavaClassFiles/sample.jar: java.io.IOException: <null>
# Applet exception: class TaxPaymentAppletForm could not be loaded
# Applet exception: class TaxPaymentAppletForm could not be loaded
# Applet exception: class TaxPaymentAppletForm could not be loaded
In netscape also it is sometimes running some times not, without any logical reson.
Any help regarding this is appreciated
manisha

Following is the more detailed analysis when applet is running and when not
On local server, it is running fine on both IE / Netscape
When I transfered jar file to live server
On IE it is running for the first time and then onwards not running, If I clear the catch then again applet is running.
For second time it is giving following error :
IOException Loading Archive: http://dev1.janusx-collections.com/iras/JavaClassFiles/AppletForm.jar
java.io.IOException: dev1.janusx-collections.com:80//iras/JavaClassFiles/AppletForm.jar
at com/ms/net/wininet/http/HttpInputStream.connect
at com/ms/net/wininet/http/HttpInputStream.<init>
at com/ms/net/wininet/http/HttpURLConnection.createInputStream
at com/ms/net/wininet/WininetURLConnection.getInputStream
at com/ms/vm/loader/JarArchiveSet.loadNextJar
at com/ms/vm/loader/JarArchiveSet.getResourceBits
at com/ms/vm/loader/JarArchiveSet.getClassData
at com/ms/vm/loader/ResourceLoader.getClassData
at com/ms/vm/loader/URLClassLoader.findClass
at com/ms/vm/loader/URLClassLoader.loadClass
at com/ms/vm/loader/URLClassLoader.loadClass
at com/ms/applet/AppletPanel.processSentEvent
at com/ms/applet/AppletPanel.processSentEvent
at com/ms/applet/AppletPanel.run
at java/lang/Thread.run
java.lang.ClassNotFoundException: TaxPaymentAppletForm
at com/ms/vm/loader/URLClassLoader.loadClass
at com/ms/vm/loader/URLClassLoader.loadClass
at com/ms/applet/AppletPanel.processSentEvent
at com/ms/applet/AppletPanel.processSentEvent
at com/ms/applet/AppletPanel.run
at java/lang/Thread.run
ON Netscape it is NOT running at all on from live server and error is as given in above first post.
manisha

Help with running java .jar file

Hi I just installed java with
# pacman -S jre
and when i try to run
java -jar file.jar
it says command not found. so what do i need to install to be able to run java .jar files through the CLI?

do, what vintendo says. because it cant find the java in the default paths.

HELP FAST IN RUNNING JAR FILE

After your advice in the same forum I was able to create a JAR File from a single file but somehow it has got associated with VC++.........When i double-clicked on the JAR File it gave me list of programs fomr which i hadd o chose to run the JAR file. I guess I chose VC++. ANd now the JAR file opens in VC++ Showing all binary stuff which I don't wnt to see. How do I remove this association and run the JAR File like a proper EXE file.................
Please HELP SOON.........
THANX........

What system are you running? You might try searching the forum.

Help needed on properties of files attached to the transaction-crmd_order

Hi Experts,
My requirement is to hide the file attached to the transaction(crmd_order).
For this, I got the information about the file from cl_crm_documents=> get_info method and the FLAG VARIABLE used for hiding th file is KW_SYSTEM_FLAGS.
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Al_Barrs wrote:
THR AUG th?I have some picture, graphic and text files that have in some way been saved in the Creative Player2 format on my computer. I need to associate these files with another program so that I can reoer the images and text. Can anyone tell me what program I can use to associate these Creative Player2 files to revover them, or if there is some other way to open them... Desperate for help!!! Thanks in advance. Al [email][email protected]][email protected][/url]?
What player are you referring to? Is it Creative PlayCenter 2? Playcenter doesn't save any special extension to the files. It uses all the standard extension. eg. jpg,txt.... Not sure what you are trying to say.

Help Needed: Operation on jar files!

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