J2SE/JRE Version(s) on Clients

Hi All!
Can someone offer some guidance on what version(s) of J2SE/JRE we should have installed on our clients (PCs)? We have standardized on 1.4.2_13 and are moving to 1.4.2_15 for Vista support, but we've run into several situations where SAP is asking for us to also install 1.5 or 1.6, and we also have other vendors asking for various versons of J2SE/JRE. In the past we tried to use the same version as the version on the server, but we're finding this is hard to do.
Also, if you're running multiple versions, how do you manage cases where 2 browser apps want to use different versions since (at least with IE) it appears only one can be the default.
Thanks!
Jeff

Jeff,
Unfortunately, as you have realised, you're stuffed when it comes to IE and Java. Only one can be used.
We have to produce a certified list of apps that can be run against a common JRE. It looks like a neat matrix sheet and normally works around the lowest common denominator of JRE.
Unless SAP don't support you on older JRE versions, don't be bullied by them into upgrading.
Unless there is a very compelling reason (e.g. you need a patch that requires an upgrade) then I wouldn't change it, for simplicities sake.
I found this link to be of use though:
Re: Assigning Frieght conditions by Vendor
Best Regards,
Darryl

Similar Messages

Detect JRE version of the Client Browser fiom a JSP

I have an Applet that is called from a JSP page that works only in certain JRE versions .
I was wondering if there is a way of finding the Installed JRE version of the Client ...

You could use some of the old traditional Javascript code that determines what browser it's running in, and have that code pass different parameters to the applet based on its determination.

J2EE and related J2SE/JRE versions

I understand the difference between J2EE and J2SE/SDK/JDK, and JRE. However, I'm having trouble identifying what version of SDK each of the J2EE versions uses. Maybe they match up.
For example, if I have an old project someone says was built with J2EE 1.3 SDK, does that use J2SE/JRE 1.3? Does Java EE 5 use Java 1.5? 1.6? 1.4? (For example, if I'm setting Eclipse Compiler Compliance Level for a J2EE 1.3 project, what should it be?)

is there a way for me to know what Java version that would have been or could have been compiled against?No.
Edit: Slight clarification - the class files in the application contain a magic number that corresponds with the compiler target - so for any given class file you can determine what JRE was targeted at compile time. This can be different from the compiler version. Different classes in the same application may have been targeted to different JRE versions.
Are there any versions of Java that it could not be compiled against?No.
what version of Java does the Application Server on which this will be deployed support.The Application Server will be running on a JRE corresponding to a particular Java release. That JRE will support all versions of Java prior to the release. Code compiled on subsequent versions of Java can, if suitably written, be targeted to run on that version of the JRE and (depending on versions) may not need specific targeting to do so. Whether they in fact work or not depends entirely on what library calls they make.
What's the business requirement that drives this request?
Edited by: dcminter on 03-Mar-2010 18:54

J2SE JRE on a thin client problems!!!!!!!!!!

HELP!
I would like some help regarding a situation where a webstartable application totalling approx 400k as a prototype app is being sent to a thin client. This thin client is a Wyse computer with a 96mb flash card for its hard disk space. The Java app uses the Swing api and JBoss client jars. The application works smoothly on WinNT or Win2000, 256mb, 700Mhz PC installed with J2SE but the problem is that the target client has a Windows NT Embedded OS which only gives around 7.5mb free hard disk space on its flash card. This is a problem as the client OS needs Java 2 JRE which is a whopping 20.8mb. WebStart when installed totals to approx 1.9mb on a PC. So, the complete deployment for the application would reach approximately 24mb going way past the 7.5mb max limit. The client does have IE+MSJava but uninstalling this JVM is not an option as apparently, it is being used for some other app. I am aware of the option of upgrading the machine but that won't go down too well as it will involve upgrading hundreds of clients. Also, this demo needs to show off Swing to the max so that such an upgrade decision can be made. Getting the application+JRE+WebStart deployed within the limit means that there will be a chance for Java to grow on both the client and server side in Carphone Warehouse, one of the top mobile phone retail companies in the UK. However, if this is not achieved then the alternative is that IE will be used to provide an HTML-based limiting, slow user interface for our users in our stores.
A related question I have is whether J2Micro Edition is an avenue that may be useful to explore. I have looked at it a little and as a guess I'd say that the configurations I have found are for too simple for the device targetted by us as it is near enough to a PC's spec except that it has limited chip power, hard disk and memory space.
Please could someone help us with this as it would really promote Java in our company.
regards,
Amar Syed
Carphone Warehouse UK
Email: [email protected]

Well, here are a few suggestions, although I'm not sure how feasible they are at this point...
1) Is it essential that you use WebStart and have the code on the client? That's not really a "Thin client" solution... ;-) Can you refactor your app as a JApplet, and just use the java plugin to run it (~5MB)? This would still enable you to use swing. (You could even just have a "launching" applet in a browser that launches your main GUI JFrame in front of the browser.)
2) I've never used this product, but it's worth a mention - WebCream, by CreamTect (http://www.creamtec.com/webcream/) - it runs your swing app on the server, and sends a DHTML representation of it to the client's browser. Looks pretty convincing from their examples...
3) J2ME is probably not an option, since it doesn't support Swing - it has its own limited API for displaying stuff on mobile devices' small screens.
4) Failing that, there's still server-side java - the JSP/Servlet option, creating your own customized HTML (or super-interactive DHTML) pages and sending them to a browser on the client machine.
Hope some of this helped a little! Let us know how you get on.
M

Use different JRE versions in Oracle Discoverer 10g(10.1.2.0)

Hello.
We have a Oracle Forms application which also uses Discoverer Plus and Reports.
Problem is we have some user clients who uses XP/IE 6.0 while otheres has Vista IE 8.0.
Based on here
http://www.oracle.com/technetwork/middleware/ias/downloads/as-certification-r2-101202-095871.html#BABGCBHA
depending on OS/browser different plugin versions are required. If we
Can we have different JRE versions in separate clients? Kinda confused with the matrix.

Hi;
Please check below which could be helpful for your issue:
Overview of Using Java with Oracle E-Business Suite Release 12 [ID 418664.1]
Deploying Sun JRE (Native Plug-in) for Windows Clients in Oracle E-Business Suite Release 12 [ID 393931.1]
Oracle Jinitiator and Sun JRE/JPI Support for Oracle Forms Applications [ID 555720.1]
Regard
Helios

Install j2se plugin version 1.6.0_07 on your client and NPX_PLUGIN_PATH environment variable set before starting Netscape.

Hi experts m new to apps please help.. I have installed successfully Oracle Apps R12 on OEL - 5 All the services runining fine. but when i am opening forms its giving error "install missing plugins" i installed jre-6u7-linux-i586-rpm.bin and Mozilla Firefox 3.0.18 [root@ust ~]# cd firefox/plugins/ [root@ust plugins]# ln -s /usr/java/jre1.6.0_07/plugin/i386/ns7/libjavaplugin_oji.so ./libjavaplugin_oji.so [root@ust plugins]# ls libjavaplugin_oji.so libnullplugin.so [root@ust plugins]# ll total 20 lrwxrwxrwx 1 root root 58 Sep 11 16:22 libjavaplugin_oji.so -> /usr/java/jre1.6.0_07/plugin/i386/ns7/libjavaplugin_oji.so -rwxr-xr-x 1 root root 19160 Sep 15 2007 libnullplugin.so [root@ust plugins]# but when m trying to open forms at that time giving error "install j2se plugin version 1.6.0_07 on your client and NPX_PLUGIN_PATH environment variable set before starting Netscape."

Linux is not a certified client tier for accessing EBS
Unable to access r12 forms in linux client
https://forums.oracle.com/search.jspa?view=content&resultTypes=&dateRange=all&q=linux+client&rankBy=relevance&contentTyp…
HTH
Srini

Java is blocked. Don't know why. Error: Application Blocked Java Plug-In 10.51.2.13 using JRE version 1.7.0_51-b13 Java HotSpot(TM) Client VM

I keep receiving this message when trying to use http://www.exodus-chats.org/DolTerias . it uses a java based chat system, and won't allow me to open the application. I've tried checking through my options menus, but I've found no reason as to why this can be blocked. The only thing I've come up with is my plug ins, but it doesn't allow me to change anything to allow the app to be used.
Application Blocked
Details: Java Plug-In 10.51.2.13 using JRE version 1.7.0_51-b13 Java HotSpot(TM) Client VM

Starting in Java 7 Update 51, sites that would normally be blocked based on your Java Security settings can be added to an Exceptions list, via the Java Control Panel. See the Java Help page [http://www.java.com/en/download/faq/exception_sitelist.xml How can I configure the Exception Site List?] for details.
Ref: http://kb.mozillazine.org/Java#Java_security_prompts

J2SE Plugin version 1.4.2_04 on your client and NPX_PLUGIN_PATH environment

Dear all,
I get the following error while trying to login into Oracle EBS Applications, from an Ubuntu client OS.
Please advice me with the solution for the same...
Error Message :
In order to access this application, you must install the J2SE Plugin version 1.4.2_04 on your client and NPX_PLUGIN_PATH environment variable is set before starting Netscape. To install this plugin, click here to download the oajinit.exe executable. Once the download is complete, double-click the oajinit.exe file to install the plugin. You will be prompted to restart your browser when the installation is complete.
SOMEBODY, PLEASE REPLY IMMEDIATELY
Edited by: Anand.C on Mar 6, 2008 1:51 PM

Linux is not a certified client tier for accessing EBS
Unable to access r12 forms in linux client
https://forums.oracle.com/search.jspa?view=content&resultTypes=&dateRange=all&q=linux+client&rankBy=relevance&contentTyp…
HTH
Srini

Checking Client JRE version

This problem is killing me! I need to check what version the
client's JRE is so that they can download and run my app from my web server. They need JRE 1.4.1, and if they don't have it, I want to redirect (potentially) to a page I will create that will inform them of the requirements. (The client will never have admin rights, so can't install it directly from Sun)
I've looked at Jsp and applet solutions but can't get anywhere with it. Does anyone have any ideas on getting around the security issues?
To clarify a bit more, I can have code in the applet to check the
version on the client (jsps will only check the server version) ---
String value = System.getProperty("java.specification.version");
if (value == "1.4.1") {
continue and go to a http page -- but can't redirect from an applet
else {
redirect to an error page or inform the server somehow so I can
redirect the browser.
Any way I can redirect a http page somehow from an applet?
Or set a property in the server which could be read elsewhere...
elpico

use Applet.getAppletContext() to get the AppletContext that represents the page currently displayed by the browser.
then do AppletContext.showDocument(URL�url) to redirect to another page.
AppletContext currentPage = this.getAppletContext();
String value = System.getProperty("java.specification.version");
if (value == "1.4.1")
//OK -> continue.htm
currentPage.showDocument(new URL("http://localhost/continue.htm"));
else {
//ERROR -> error.htm
currentPage.showDocument(new URL("http://localhost/error.htm"));
}thx for the dukes ;),
elchaschab

How to find JRE Version on client machine

My client machine does not have any class file, they are running web pages on web Browser.
We have some specific plug-in based on JRE Versions (e.g. JRE 5 or JRE 6).
Also we do not have permission to run an applet on client machine as it�s a security concern.
We have following senerio
Application server on Machine-1
Web Server on Machine-2
Client on Machine-3
We need JRE version of Machine-3.
Please provide me a solution.
Thanks in advanced.

Old post but replying anyways so that the solution can be used for later
For Firefox/Mozilla/Netscape this can be done through javascript like below
     for (i=0; i<navigator.plugins.length; i++) {
     document.write(navigator.plugins.name);
     document.write("::::");
     document.write(navigator.plugins[i].filename);
     document.write("::::");
     document.write(navigator.plugins[i].description);
     document.write("<p>");
It prints out "Java Plug-in::::NPJava12.dll::::Java Plug-in 1.4.1_02 for Netscape Navigator (DLL Helper)"
from which the plug-in version can be found out
For IE :
     try{
          var obj= new ActiveXObject("WScript.Shell");
          if (obj!= null) {
//Version for the installed JRE
var ver = shell.regRead("HKEY_LOCAL_MACHINE\\Software\\JavaSoft\\Java\ Runtime\ Environment\\CurrentVersion");
          alert(ver);
     }catch(e){}

Diffculty downloading JRE version if user has no admin rights on the box...

If you try to load in your own JRE version using the j2se tag in the JNLP file, and you dont have Admin Rights on the computer, java webstart client will give you the following error:
The application has requested a version of the JRE (version xxxx) that currently is not locally installed. Java Web Start is unable to automatically download and install the requested version. This JRE must be installed manually.
The underlying reason for this, is because the user doesnt have admin rights, the Java Control Panel->Advanced->JRE Autodownload option is set to Never AutoDownload, where as with a user with admin rights this option is set to Always AutoDownload. Once you switch this to Always AutoDownload, the JRE version is loaded correctly as specified by the j2se tag in the JNLP file.
Is there any way to set this option programmatically, or via the JNLP API? Any other suggestions on how this can be done?
Thanks,
Amado

odama94 wrote:
..Is there any way to set this option programmatically, or via the JNLP API? If there was a way, it would be a security bug.
.. Any other suggestions on how this can be done?Talk to your System Administrator.

No jre version found in launch file

I'm using jdk1.5.0_03 (with all other versions of java removed from my system) and trying to run our web start app that specifies a version of 1.4.2*. After clicking the link to the jnlp file, web start contacts sun to retrieve 1.4.2*, then gives the dialog: "unable to launch FlowJo" (our app). On the details tab, it reports: "No JRE version found in launch file for this system".
When I launch the web start manager, under the user applications tab, I see 3 applications: our app, our installer, and Sun's j2re1.4.2_07 installer. It seems like Sun's installer is being downloaded but never executed.
Am I doing something wrong in my jnlp files? Both our app jnlp and our installer jnlp specify a j2se version of 1.4.2*. Below are the files and exception as reported from the web start dialog. I'm trying to set our app up for internal testing with web start, so I'm using a local ip. Our application uses a custom installer which has its own jnlp file (shown below in "launch file").
Any help is much appreciated,
Peter
Launch File:
<?xml version="1.0" encoding="utf-8"?>
<jnlp codebase="http://192.168.1.33/flowjo/current/installer/">
<information>
<title>FlowJo Installer</title>
<vendor>Tree Star, Inc.</vendor>
<homepage href="http://www.flowjo.com"/>
<icon href="images/logo2fin.gif"/>
<offline-allowed/>
</information>
<security>
<all-permissions/>
</security>
<resources os="Windows" arch="x86">
<j2se version="1.4.2*" maximum-heap-size="512m" href="http://java.sun.com/products/autodl/j2se" />
<jar href="http://192.168.1.33/flowjo/current/installer//installer.jar" />
</resources>
<installer-desc main-class="com.treestar.flowjo.install.JNLPInstaller"/></jnlp>
Main launch file:
<?xml version="1.0" encoding="UTF-8"?>
<jnlp codebase="http://192.168.1.33/flowjo/current/flowjo/">
<information>
<title>Flowjo </title>
<vendor>Tree Star, Inc.</vendor>
<icon href="images/logo2fin.gif"/>
<offline-allowed/>
<shortcut online="false">
<desktop/>
<menu submenu="Flowjo "/>
</shortcut>
<association extensions="wsp" mime-type="x-application/wsp"/>
<association extensions="wspt" mime-type="x-application/wspt"/>
</information>
<security>
<all-permissions/>
</security>
<resources>
<j2se version="1.4.2*" initial-heap-size="128M" max-heap-size="512M" href="http://java.sun.com/products/autodl/j2se" />
<jar href="flowjo.jar" />
<jar href="resources.jar" />
<extension name="FlowJo Installer" href="http://192.168.1.33/flowjo/current/installer/installer.jnlp"/>
</resources>
<resources os="Windows">
<nativelib href="http://192.168.1.33/flowjo/current/lib/FlowJoEngine.DLL.jar"/>
</resources> <application-desc main-class="com.treestar.flowjo.Main" />
</jnlp>
Exception:
JNLPException[category: Launch File Error : Exception: null : LaunchDesc:
<jnlp spec="1.0+" codebase="http://192.168.1.33/flowjo/current/installer/">
<information>
    <title>FlowJo Installer</title>
    <vendor>Tree Star, Inc.</vendor>
    <homepage href="http://www.flowjo.com"/>
    <icon href="http://192.168.1.33/flowjo/current/installer/images/logo2fin.gif" kind="default"/>
    <offline-allowed/>
</information>
<security>
    <all-permissions/>
</security>
<resources>
    <j2se href="http://java.sun.com/products/autodl/j2se" version="1.4.2*"/>
    <jar href="http://192.168.1.33/flowjo/current/installer//installer.jar" download="eager" main="false"/>
</resources>
<installer-desc main-class="com.treestar.flowjo.install.JNLPInstaller"/>
</jnlp> ]
     at com.sun.javaws.Launcher.executeInstallers(Unknown Source)
     at com.sun.javaws.Launcher.handleApplicationDesc(Unknown Source)
     at com.sun.javaws.Launcher.handleLaunchFile(Unknown Source)
     at com.sun.javaws.Launcher.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)

The use of an earlier jre in the resource tag does no
good:
<resources>
<j2se version="1.4.1" />
Still gives the same error;
JNLPException[category: Launch File Error : Exception: null : LaunchDesc:
<jnlp spec="1.0+" codebase="http://show.docjava.com:8086/book/cgij/code/jnlp/" href="http://show.docjava.com:8086/book/cgij/code/jnlp/bookExamples.ch44Printing.cdLabel.CdLabelPrinterMain.jnlp/">
<information>
    <title>Experimental Labeler</title>
    <vendor>DocJava, Inc.</vendor>
    <homepage href="http://www.docjava.com"/>
    <description>CD Label Printer
     </description>
    <description kind="short">
      Printer
</description>
    <description kind="one-line">CD Label Printer
     </description>
    <description kind="tooltip">CD Label Printer
     </description>
    <icon href="http://show.docjava.com:8086/consulti/docjava.jpe" kind="default"/>
</information>
<application-desc main-class="bookExamples.ch44Printing.cdLabel.CdLabelPrinterMain"/>
</jnlp> ]
     at com.sun.javaws.Launcher.handleLaunchFile(Launcher.java:186)
     at com.sun.javaws.Launcher.run(Launcher.java:167)
     at java.lang.Thread.run(Thread.java:552)
Can someone please help?
Thanks!
- DL

No JRE version found in launch file for this system

Hi,
I have an application which is launched by JWS.
When we use JWS from 1.4, it runs fine. But JWS from 1.5.0_15 gives the error "No JRE version found in launch file for this system"
In both the JWS(1.4 and 1.5.0_15)cases, we install JRE1.5.0_15 using the installer and used for invoking the application.
We invoke mailclient.jnlp, which inturn invokes the installer.jnlp and KanaJreInstaller.asp
<<mailclient.jnlp>>
<?xml version="1.0" encoding="utf-8"?>
<jnlp
spec="1.0"
codebase="http://mpshanmu-gx520:80/10r3/"
href="mailclient.jnlp">
<information>
<title>KANA Agent</title>
<vendor>KANA Software, Inc.</vendor>
<homepage href="http://www.kana.com"/>
<description>KANA Suite 10.3.0</description>
<icon href="images/mail_logo.gif"/>
<offline-allowed/>
</information>
<security>
<all-permissions/>
</security>
<resources>
<j2se version="KANA1.5.0_15" href="KanaJreInstaller.asp"/>
<jar href="lib/mailclient_s.jar"/>
<jar href="lib/link_s.jar"/>
<jar href="lib/spell_s.jar"/>
<jar href="lib/ssce_s.jar"/>
<jar href="lib/kc_framework_s.jar"/>
<jar href="lib/kc_sharedGUI_s.jar"/>
<jar href="lib/xalan_s.jar"/>
<jar href="lib/xerces_s.jar"/>
<jar href="lib/java2com_s.jar"/>
<jar href="lib/jgl3.1.0_s.jar"/>
<jar href="lib/rsrcbundle_s.jar"/>
<jar href="lib/response_s.jar"/>
<jar href="lib/HTMLEditorEnterprise_s.jar"/>
<jar href="lib/jakarta-oro-2.0.4_s.jar"/>
<jar href="lib/jdic_s.jar"/>
<extension name="Sun Libraries" href="sunextensions.jnlp"/>
</resources>
<resources os="Windows">
<nativelib href="lib/windlls_s.jar"/>
<nativelib href="lib/jdic-native.jar"/>
</resources>
<application-desc main-class="kana.mail.wkstn.AppMain">
<argument>-serverlist</argument>
<argument>http://mpshanmu-gx520:80/10r3/servers.xml</argument>
</application-desc>
</jnlp>
<<KanaJreInstaller.asp>>
<%@ language="vbscript"%>
<%
Response.ContentType="application/x-java-jnlp-file"
Response.AddHeader "x-java-jnlp-version-id","KANA1.5.0_15"
dim fs,f,ts
set fs=Server.CreateObject("Scripting.FileSystemObject")
Set f=fs.GetFile("C:\Program Files\KANA\KANA Response Web Server_10r3\installer.jnlp")
Set ts=f.OpenAsTextStream(1)
Response.Write(ts.ReadAll)
ts.Close
set ts=nothing
set f=nothing
set fs=nothing
%>
<<installer.jnlp>>
<?xml version="1.0" encoding="utf-8"?>
<jnlp
spec="1.0"
codebase="http://mpshanmu-gx520:80/10r3/"
href="installer.jnlp">
<information><title>KANA J2RE 1.5.0_15 Installer</title>
<vendor>KANA Software, Inc.</vendor>
</information>
<security>
<all-permissions/>
</security>
<resources>
<j2se version="1.3+"/>
<jar href="lib/installer.jar"/>
<jar href="lib/JRE_KANA1.5.0_15.jar"/>
<property name="jre.container" value="JRE_KANA1.5.0_15.jar"/>
<property name="jre.execute" value="bin\\javaw.exe"/>
<property name="jre.version" value="KANA1.5.0_15"/>
</resources>
<installer-desc main-class="JREInstaller"/>
</jnlp>
Thanks

>
We are using sun JRE(1.5.0_15) only. We extract Sun JRE and build it as KANAJRE.jar and signing.>I have never heard of KANAJRE. Would you care to post a link to the site, or should we just keep guessing? (My patience for random guesses is running out.)
>
We install using Intaller class and that is getting listed in the Java Control panel and enabled too.>List as what?
Does it list it with the entire string "KANA1.5.0_15" or is is just listed as "1.5.0_15"?
Because this line from the JNLP file..
<j2se version="KANA1.5.0_15" href="KanaJreInstaller.asp"/>..had me convinved it was a non-Sun JRE. Not so much the href, but most especially the version attribute.
If it really is the Sun JRE, I would expect this to work.
<j2se version="1.5.0_15" href="KanaJreInstaller.asp"/>And as an aside. If this installer is giving you trouble and the app. requires the 1.5.0_15 JRE, why not simply the default Sun JRE installer? What advantages do you think this installer offers?

Using tag OBJECT on a machine with multiple jre versions

Dear friends,
i guess that this question has been already answered, but i can't find the thread with all infos i need.
So please excuse me if i'm redundant.
This is my problem:
i have a web application that runs an applet, embedded in an html page;
by now the applet is loaded with the standard tag <APPLET>.
I found many Sun's official pages talking about the use of OBJECT tag to specify the jre version that is supposed to run the applet.
I tried many ways but i can't reach the way to avoid loading the applet with the latest jre installed on my pc.
Here is the code of my OBJECT:
<OBJECT NAME="client" CLASSID="clsid:CAFEEFAC-0014-0002-0009-ABCDEFFEDCBB" HEIGHT="38" WIDTH="335" >
                    <PARAM NAME="NAME" VALUE="client">
                    <PARAM name="type" value="application/x-java-applet;jpi-version=1.4.2_09">
                         <PARAM NAME="CODE" VALUE="it.fabio.client">
                         <PARAM NAME="CODEBASE" VALUE="/myapp">
                         <PARAM NAME="ARCHIVE" VALUE="mylib.jar">
               </OBJECT>The machines where the application is deployed have the 1.4.2_09 and the 1.5.0_03 jre versions, but my applet runs only on 1.4.2_09 version.
So i have to find a way to tell the browser which jre has to be called.
Thanks in advance for help.
Regards

Wait a second...there is more to that error message that I overlooked before.
There might be something other than just the way I set the CODE and CODEBASE parameters wrong here
Any ideas?
Here is the entire messsage:
load: class DisplayMonoApplet.class not found.
java.lang.ClassNotFoundException: DisplayMonoApplet.class
     at sun.applet.AppletClassLoader.findClass(Unknown Source)
     at java.lang.ClassLoader.loadClass(Unknown Source)
     at sun.applet.AppletClassLoader.loadClass(Unknown Source)
     at java.lang.ClassLoader.loadClass(Unknown Source)
     at sun.applet.AppletClassLoader.loadCode(Unknown Source)
     at sun.applet.AppletPanel.createApplet(Unknown Source)
     at sun.plugin.AppletViewer.createApplet(Unknown Source)
     at sun.applet.AppletPanel.runLoader(Unknown Source)
     at sun.applet.AppletPanel.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
Caused by: java.io.IOException: open HTTP connection failed.
     at sun.applet.AppletClassLoader.getBytes(Unknown Source)
     at sun.applet.AppletClassLoader.access$100(Unknown Source)
     at sun.applet.AppletClassLoader$1.run(Unknown Source)
     at java.security.AccessController.doPrivileged(Native Method)
     ... 10 more

Problem selecting the right jre version with jnlp

I am using Webstart 1.4.2.
When instaling, it correctly found 2 jre versions on my system, 1.4.1_03 and 1.4.2.
Because our application currently is not working with 1.4.2 I need to force webstart to use 1.4.1_03.
I tried to set the tag <j2se version="1.4.1_03"
When loading from the websever I get a "Error Code 11 (11 Could not locate requested version) "...same if I explicitly set to 1.4.2.
I suspect that webstart is checking the "platform version" which are set for both to 1.4 and not the "product version" (see java preferences in webstart).
Does somebody know if there is another jnlp tag I can use to force a specific version? or any other workaround.
In my opinion this is a bug webstart should check the product version
Thanks Marc

had the same problem...
ad the url and try again:
<resources>
<j2se version="1.4.1_03" href="http://java.sun.com/products/autodl/j2se"/>
<jar href="...
as far as I now are not all JRE's available for autodownload.
Good luck!

J2SE/JRE Version(s) on Clients

Similar Messages

Maybe you are looking for