Java Web Start Version 1.0 doesn't found installed JRE

I would like to try some demos from http://java.sun.com/products/javawebstart/demos.html
After I clicked on image receive next page with message "In order to launch the requested application, you will need to download Java Web Start Version 1.0 - This installation is a one-time process."
And after click "Download now" me propose download JSE and install.
But I already have installed JRE!
This is from command line java -version:
java version "1.6.0_03"
Java(TM) SE Runtime Environment (build 1.6.0_03-b05)
Java HotSpot(TM) Client VM (build 1.6.0_03-b05, mixed mode)
I have try from opera and firefox.

set JAVA_HOME to jdk and not jre.JAVA_HOME is for other applications to find the java libraries inside jdk
Example:
JAVA_HOME=C:\Program Files\Java\jdk1.5.0_05

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Java Web Start(the program itself) doesn't start in offline mode

Hi,
My Java Web Start doesn't start when my internet connection is not on??? I have a program that needs also offline access so it's crucial to get JWS work without internet connection as well.
The problem might be in those sun's example programs you can't remove? Maybe the program crashes when trying to get some information for those programs?
(please read the question well. My problem IS NOT in the .jnlp-files <offline-allowed/>)
And by the way those sun's demo programs that are supposed to start in offline mode(Internet connection not required) don't start even if you have started them once with the connection on.....
-orainio

I have the SAME problem -
BUT....
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Title: Extensity 6
Vendor: Geac Computer Corporation Limited
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Hi:
We installed the J2SE 1.4 Release Candidate and our Java Web Start applications which previously worked now won't run. Upon their launch, there is the following error message :
Error Code 11 (11 Could not locate requested version) returned from server when accessing resource (http://java.sun.com/products/autodl/j2se, 1.4.0-rc)
Does anyone know why this is?
All replies are greatly appreciated!
Sincerely,
Mona

Hi:
I tried what you suggested in the jnlp file:
<j2se version="1.4 1.4.0-rc" href="http://java.sun.com/products/autodl/j2se"/>
and I am still getting the error:
The application has requested a version of the Java 2 platform (JRE) that is curently not locally installed. java Web Start was unable to automatically download and install the requested version. The JRE version must be installed manually.
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Java Web Start applications and Gatekeeper

As more of our customers upgrade to Mac OS X 10.8 or later or purchase new machines we've had to deal with helping more of them work around Gatekeeper for our Java Web Start deployed applications. Many discussions found on the web show the confusion that surrounds this technology and how it interacts with Web Start apps. Most "solutions" suggest various security changes like allowing apps downloaded from anywhere. The one we most often employ is to control-click the JNLP file and choose Open. Then the dialog has an option to "install" the application anyway.
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Is there anything in the works from Oracle to fix this issue?
Jacob

Probably not the case here, but considering it is a development machine it is something to check. The symptoms you describe are exactly what happens when you setup JWS applications to be remotely debugged, and specify suspend=y. In that case, before the application launches, it waits for Eclipse (or some other development environment) to connect to it. I do this all the time and what happens before Eclipse attaches to the process is exactly what you describe. Check the JAVAWS_VM_ARGS to see what VM parameters are being used.
Jake

WebStart 1.4.2 doesn't find installed JRE for 1.4.2 ?

I have installed J2RE1.4.2_04. As far as I can tell, it works just fine and there are registry keys set for
Java Runtime Environment for 1.4 and 1.4.2_04 which are set to the same thing. However, when I
run my webstart app, I get an error with the general information that "The application has requested a
version of the Java 2 platform (JRE) that is currently not locally installed. Java Web Start was unable to
automatically download and install the requested version. The JRE version must be installed manually."
Having turned tracing and output on, I look in the log and see
javawsApplicationMain: Installed JRE: null
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I have tried various incantations of version, such as
<j2se version="1.4.2_04"/>
<j2se version="1.4.2"/>
<j2se version="1.4.2+"/>
<j2se version="1.4.2*"/>
All of these result in the same error. If I try either of
<j2se version="1.4+"/>
<j2se version="1.4"/>
WebStart recognizes that I do in face have a JRE installed, but then I have other problems. I would
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: jay

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See http://java.sun.com/products/javawebstart/developers.html#auto for details.
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Application started using Java Web Start doesn't launch the first time

I have a Facebook photo uploader application that I plan to distribute using Java Web Start. I'm using Java 6u4 on Windows XP SP2 with 2GB of RAM. I have Java 6u3, Java 6u4 and Java 5 u14 installed and I'm sure the one used is Java 6u4.
I signed my application and make use of all security settings.
Here is my JNLP file:
<?xml version="1.0" encoding="utf-8"?>
<jnlp spec="1.0+"
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     href="http://www.antaki.ca/bloom/Bloom.jnlp">
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<shortcut online="false">
<desktop/>
<menu submenu="Bloom"/>
</shortcut>
</information>
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        <jar href="http://www.antaki.ca/bloom/jars/SmartProgressMonitor.jar"/>
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        <jar href="http://www.antaki.ca/bloom/jars/swingx-0.9.1.jar"/>
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<security>
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</jnlp>Here is the link for my application http://antaki.ca/bloom/Bloom.jnlp
The first time the application is installed using a link on the browser it's downloaded then the certificate dialog is shown, after that I check the checkbox to accept the certificate permanently. The application doesn't load, it only loads the second time although I see it in the task manager. If I don't accept the certificate permanently it does load. This happens on both Firefox 2 and IE 7. I enabled the console and logging but nothing shows up there.That's really a weird problem, I wonder if Java Web Start is a viable deployment option, it does have great capabilities such as autoupdate but still seems to have important bugs.
Does anyone have any clue about what is going on.
The problem doesn't occur on Ubuntu 7.10.
Thanks,
Carl Antaki

>
You were right my XML file was not correct. I still couldn't find a valid JNLP validator. Sun has to provide that.>No they don't (have to supply a validator for their own document type, though it makes sense to do so), but yes they do (provide a tool that validates XML against schemas). Java can validate XML against a DTD or XSD.
Check these two threads (and chase the links) for more details.
JNLP xsd schema
<http://groups.google.com.au/group/comp.lang.java.programmer/browse_thread/thread/c6f65bf1df5f105d/30c6b7e2dc342dc4>
Validate XML against DTD? XSD OK. SSCCE.
<http://groups.google.com.au/group/comp.lang.java.programmer/browse_thread/thread/5b997a1edb765b11/e831f3066eb4aa38>
Look especially for the posts by Piotr Kobzda.
I had a tool on my site based largely on Piotr's codes, that linked to a valid JNLP DTD and XSD, but unfortunately my site is offline at the moment. Andy assures me that the JNLP 6.0 DTD has been corrected for the developer ..download tutorials of web start, though the online (web site) version may still be invalid.

Why Java Web Start doesn't support Pack200 out-of-the-box?

Hello All,
Why Java Web Start doesn't support Pack200 out-of-the-box? I was hoping that Java 6 would make things easier by adding direct support for Pack200 in Java Web Start and JNLP without needing to use servlets, etc.? All my clients are Java 5 or above so I can't push the Pack200 compressed version of the jar to every single one of them and there is no selection process needed. But I can't do it because of the servlet or complex Apache server setup requirement (it would be a headache to get customers' web server admins to set up Apache or whatever web server that way).
My question is why is there unwillingness to add Pack200 support directly to Java Web Start and JNLP so that you can start Pack200 compressed jars just like you would start any jar using Java Web Start? Is te a technical problem?
Thank you,
Mete Kural

Hallo,
I didn�t try it, but the webstart FAQ�s read:
Can I use Pack200 compression with the JnlpDownloadServlet?
Yes. The JnlpDownloadServlet distributed in the samples directory of the JDK now supports Pack200. If you deploy yourfile.jar along with yourfile.jar.pack.gz the packed file will be downloaded when the client is running Java Web Start 1.5.0 or later.
http://java.sun.com/javase/6/docs/technotes/guides/javaws/developersguide/faq.html#217
For further information you may want to look at
http://java.sun.com/javase/6/docs/technotes/guides/javaws/developersguide/downloadservletguide.html#pack200
The configuration of the server and the the servlet (as described in the second link) is as easy as it seems.
I got it working on the first try and it was my first experience with websevers at all.
Bye Schippe
Message was edited by:
Schippe

How can I check what version of Java Web Start is installed on the client ?

hi,
Can anyone tell me how can I check what version of java web start is installed on the client and display a message if the client has not the good version ?
I mean:
I'd like all people running my application use java 5 and if someone using java 1.4 try to run the application get a nice screen telling him to download the latest version of Java Web Start.
Is this possible ?
Thanks in advance.

Of course, I put this on my jnlp file,
<resources>
<j2se version="1.5+"/>
<jar href="..... "/>
</resources> But even with that, it doesn't display a nice message but a kind of exception instead.
Thanks in advance.

Java Web Start application doesn't run in Tomcat

I successfully did a Java Web Start example for me to learn then I tried another one where I encountered an error:
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type Status report
message /convertorvalutar/
description The requested resource (/convertorvalutar/) is not available.Appendix:
This is how I am doing the JAR
jar cfvm convertorvalutar.jar myManifest2.mf Java*.class IRata*.class The myManifest2.mf is
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This way I am doing the WAR:
del *.war /F /Q
jar cfv convertorvalutar.war app/* WEb-INF/*This is the correct directory structure
│   faWar.bat
│   convertorvalutar.war
│
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<?xml version="1.0" encoding="iso-8859-1"?>
<!DOCTYPE web-app
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"http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>

<web-app>
     <servlet>
          <servlet-name>JnlpDownloadServlet</servlet-name>
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</web-app>This is the jnlp:
<?xml version="1.0" encoding="UTF-8"?>
<jnlp codebase="http://localhost:8080/convertorvalutar/app">
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</resources>
<application-desc main-class="JavaWebStart_Convertor"/>
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Edited by: remus.dragos on Dec 9, 2008 7:14 PM

I did checked the names again and I found that the makeJar.bat had an "issue".
It missed the del *.jar and I had 2 uppercase letters like ConvertorValutar, instead of convertorvalutar.jar.
After that I rebuild the war and deployed and it works :)
Thanks.

Mac OS 10.4.8 , Java Web Start and JRE version of 1.4.2 and 1.5.0 problem

Hello,
I've been searching internet and reading the problems related to Java Web Start and JNLP.
But no solution I read can solve what I faced.
I'm running Mac OS x 10.4.8 and Macintosh updates the Java in my machine so that it has Java version 1.4.2 and Java 1.5.0
The application I'm running needs to be running in JRE 1.4.2.
So I changed the Java Preferences so that the default Java setting is JRE 1.4.2. However, the JNLP application still running in Java 1.5.0
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I adjust the JNLP file so that the version is only showing 1.4.2_09 (ignoring all other variables of version 1.4.1, 1.4.2, etc found in the original JNLP file). That didn't work either.
I search on methods on how to uninstall Java 1.5.0 in Mac - apple page told me that I can't do that unless I reinstall the whole OS.
I am henceforth declare that I am stuck now !!!! Heellllpp....

Are you up to date with the updates?
Update for Snow Leopard users:
Apple issued update 12 for Java for OS 10.6:
http://support.apple.com/kb/DL1573
Note: On systems that have not already installed Java for Mac OS X 10.6 update 9 or later, this update will configure web browsers to not automatically run Java applets. Java applets may be re-enabled by clicking the region labeled "Inactive plug-in" on a web page. If no applets have been run for an extended period of time, the Java web plug-in will deactivate.
If, after installing Java for OS X 2013-002 and the latest version of Java 7 from Oracle, you want to disable Java 7 and re-enable the Apple-provided Java SE 6 web plug-in and Web Start functionality, follow these steps:
http://support.apple.com/kb/HT5559?viewlocale=en_US
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Apple issued this Java related security update No. 13 on February 19:
http://support.apple.com/kb/HT5666
and Update No. 14 on March 4: http://support.apple.com/kb/DL1573
http://support.apple.com/kb/HT5677
The standard recommendation is for users to turn off Java except when they have to use it on known and trusted websites (like their bank). Javascript, which is unrelated despite the name, can be left on.

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Hi,
I have similar situation. At the machine is installed Java 1.6 u1. Setup first version of application. After deploy second version of application and run application start update, but console show that application use old packages. At the same time main package is uploaded? I'd try to use <update check="always"?> but there are no positive result.
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yabbanoname wrote:
See also https://discussions.apple.com/thread/4760961
Your answer isn't correct.
The problem is the locale setting.
Try
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Hi,
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Add or edit javaws.cfg.proxy.setting=NONE in the javaws.cfg file.
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Bye
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I tried to point the Java Web start to different path without success.
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Java Web Start Version 1.0 doesn't found installed JRE

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