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
So I changed the MIME and make sure the JNLP is opened with Java Web start instead. The Java Web start is for version 1.4.2. I also change its preference so that the console is opened.
I tried to run the JNLP application once again. Java web start 1.4.2_09 starts and console open, but the Java Runtime is still showing Java 1.5.0
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
Further update:
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.

Similar Messages

Java Web Start aborts after upgrading to 10.4.4

After the upgrade to 10.4.4 Java Web Start (and any clients) aborts as soon as I try to launch them.
I have two clients (CGoban2 and Pokerpages Poker Client) I think uses Java Web Start and they worked fine under Mac OS X 10.4.3.
Even if I try to start Java Web Start directly - it aborts immediatly.
I have not had any other problems with the Mac OS X upgrade. And webpages using Java works fine.
Below is a log (long!!!!) from the crash if anyone knows how to interpret it.
Grateful for any tips.
/Dagge
Date/Time: 2006-01-17 17:36:02.738 +0100
OS Version: 10.4.4 (Build 8G32)
Report Version: 3
Command: Java Web Start
Path: /Applications/Utilities/Java/Java Web Start.app/Contents/MacOS/Java Web Start
Parent: WindowServer [105]
Version: 10.0.2 (10.0.2)
Build Version: 1
Project Name: JavaDeploy
Source Version: 670000
PID: 2816
Thread: 3
Exception: EXCBADACCESS (0x0001)
Codes: KERNINVALIDADDRESS (0x0001) at 0x20000000
Thread 0:
0 libSystem.B.dylib 0x9000b208 machmsgtrap + 8
1 libSystem.B.dylib 0x9000b15c mach_msg + 60
2 com.apple.CoreFoundation 0x9075d114 __CFRunLoopRun + 832
3 com.apple.CoreFoundation 0x9075ca18 CFRunLoopRunSpecific + 268
4 com.apple.HIToolbox 0x9318e1e0 RunCurrentEventLoopInMode + 264
5 com.apple.HIToolbox 0x9318d874 ReceiveNextEventCommon + 380
6 com.apple.HIToolbox 0x9318d6e0 BlockUntilNextEventMatchingListInMode + 96
7 com.apple.AppKit 0x9368b104 _DPSNextEvent + 384
8 com.apple.AppKit 0x9368adc8 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 116
9 com.apple.AppKit 0x9368730c -[NSApplication run] + 472
10 com.apple.AppKit 0x93777e68 NSApplicationMain + 452
11 com.apple.WebStart 0x000045c8 0x1000 + 13768
12 com.apple.WebStart 0x00002a70 0x1000 + 6768
13 com.apple.WebStart 0x00002910 0x1000 + 6416
Thread 1:
0 libSystem.B.dylib 0x9000b208 machmsgtrap + 8
1 libSystem.B.dylib 0x9000b15c mach_msg + 60
2 com.unsanity.ape 0xc0002afc _apeinternal + 3300 (icplusplus.c:28)
3 com.unsanity.ape 0xc0001910 _apeagent + 64 (icplusplus.c:28)
4 libSystem.B.dylib 0x9002b200 pthreadbody + 96
Thread 2:
0 libSystem.B.dylib 0x9000b208 machmsgtrap + 8
1 libSystem.B.dylib 0x9000b15c mach_msg + 60
2 ...lagutin.audio_hijack.server 0x000ddc88 ahservloop + 88
3 libSystem.B.dylib 0x9002b200 pthreadbody + 96
Thread 3 Crashed:
0 <<00000000>> 0x20000000 0 + 536870912
1 libjvm.dylib 0x9641d600 jio_snprintf + 204952
2 libjvm.dylib 0x9641d194 jio_snprintf + 203820
3 libjvm.dylib 0x96414088 jio_snprintf + 166688
4 libjvm.dylib 0x96413248 jio_snprintf + 163040
5 libjvm.dylib 0x96412dc4 jio_snprintf + 161884
6 libjvm.dylib 0x96412b48 jio_snprintf + 161248
7 libjvm.dylib 0x964121a0 jio_snprintf + 158776
8 libjvm.dylib 0x9641213c jio_snprintf + 158676
9 libjvm.dylib 0x96408754 jio_snprintf + 119276
10 libjvm.dylib 0x9640828c jio_snprintf + 118052
11 libjvm.dylib 0x963e1f18 operator new(unsigned long) + 8072
12 libjvm.dylib 0x963da23c JNICreateJavaVMImpl + 1584
13 libjvm.dylib 0x963d9cc0 JNICreateJavaVMImpl + 180
14 ...ple.JavaApplicationLauncher 0x94ff2260 startJavaApplication + 336
15 com.apple.WebStart 0x0000a720 0x1000 + 38688
16 com.apple.Foundation 0x928e66d4 forkThreadForFunction + 108
17 libSystem.B.dylib 0x9002b200 pthreadbody + 96
Thread 4:
0 libSystem.B.dylib 0x9000b208 machmsgtrap + 8
1 libSystem.B.dylib 0x9000b15c mach_msg + 60
2 libjvm.dylib 0x963e1d2c operator new(unsigned long) + 7580
3 libjvm.dylib 0x963e1cc0 operator new(unsigned long) + 7472
4 libjvm.dylib 0x963e1c44 operator new(unsigned long) + 7348
5 libSystem.B.dylib 0x9002b200 pthreadbody + 96
Thread 3 crashed with PPC Thread State 64:
srr0: 0x0000000020000000 srr1: 0x000000004000d030 vrsave: 0x0000000000000000
cr: 0x24004222 xer: 0x0000000000000004 lr: 0x0000000096413dc0 ctr: 0x0000000020000000
r0: 0x0000000000000112 r1: 0x00000000f0182450 r2: 0x000000006e800230 r3: 0x000000006e800238
r4: 0x0000000000000000 r5: 0x00000000a63efce8 r6: 0x00000000036ffef5 r7: 0x000000000000df45
r8: 0x0000000001be8a8b r9: 0x00000000000d150f r10: 0x0000000001b1757c r11: 0x000000000362eaf8
r12: 0x0000000020000000 r13: 0x0000000000000000 r14: 0x0000000000000000 r15: 0x00000000a63d82e4
r16: 0x00000000a63db08c r17: 0x00000000a63e82e4 r18: 0x0000000000000000 r19: 0x0000000000000000
r20: 0x0000000000000000 r21: 0x00000000f01827b0 r22: 0x00000000a63e2df8 r23: 0x0000000000000000
r24: 0x0000000000000000 r25: 0x0000000004501090 r26: 0x0000000000000000 r27: 0x000000006e0000e0
r28: 0x0000000000000000 r29: 0x000000006e0000e0 r30: 0x0000000004504a40 r31: 0x0000000096413cbc
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Model: PowerBook6,1, BootROM 4.5.5f4, 1 processors, PowerPC G4 (3.3), 867 MHz, 640 MB
Graphics: NVIDIA GeForce4 MX, GeForce4 MX, AGP, 32 MB
Memory Module: DIMM0/BUILT-IN, 128 MB, built-in, built-in
Memory Module: DIMM1/J31, 512 MB, DDR SDRAM, PC2100U-25330
AirPort: AirPort Extreme, 404.2 (3.90.34.0.p16)
Modem: MicroDash, Euro, V.92, 1.0F, APPLE VERSION 2.6.6
Bluetooth: Version 1.7.0f18, 2 service, 1 devices, 1 incoming serial ports
Network Service: Internt modem, PPP (PPPSerial), modem
Network Service: AirPort, AirPort, en1
Parallel ATA Device: MATSHITADVD-R UJ-815,
Parallel ATA Device: HTS548060M9AT00, 55.89 GB
USB Device: USB Device, , Up to 12 Mb/sec, 500 mA
USB Device: Bluetooth HCI, , Up to 12 Mb/sec, 500 mA
USB Device: Hub, , Up to 12 Mb/sec, 500 mA
USB Device: EPSON Scanner, EPSON, Up to 12 Mb/sec, 500 mA
USB Device: Kensington PocketMouse Pro, Kensington, Up to 1.5 Mb/sec, 500 mA
USB Device: iMic USB audio system, Griffin Technology, Inc, Up to 12 Mb/sec, 500 mA

Well my problem has disappeared
But I don't know why. This i what happened.
Today my powerbook freezed and a pane/window saying
"You must restart your computer......" in four different languages.
I did so a couple of times but it always frooze and showed the same message just after the login window appered.
Someone told me that it was a "kernel panic" and that I should remove any attached devices and remove battery and power cord for some seconds.
And then it was possible to login in the system seems fine again. Then I accidently started one of my Java Web start clients and it worked. And I started the next - also OK.
So I don't know what has happened but everythings seems ok now.

Java Web Start- Cannot launch Application. Pls help

HI
Ia m beginner in java web start. I creaate a simple swing application and try to launch it through web start. But I failed. My application jar file (sample.jar)contains only class files. No menifest file. Then I sign my "sample.jar" file and placed inside tomcat server: "webapps/root/WebStart/Sample". I also placed the "sample.jnlp" file in the above directory.The name of my main class is :"Sample" .Here is the content of sample.jnlp:
<?xml version="1.0" encoding="UTF-8"?>
<jnlp spec="1.0+"
codebase="http://165.231199.164:8080"
>
<information>
<title>Sample Launching Test</title>
<vendor>FMO</vendor>
<homepage href="www.sun.com" />
<description>Demonstration of JNLP</description>
</information>
<offline-allowed/>
<security>
<all-permissions/>
</security>
<resources>
<j2se version="1.2+" />
<jar href="/WebStart/Sample/sample.jar"/>
</resources>
<application-desc main-class="Sample" />
</jnlp>Whenever I try to launch this application from the browser , it shows me following :
An error occurred while launching/running the application.
Title: Sample Launching Test
Vendor: FMO
Category: Unexpected Error
RED
Anybody pls help me here about how to Launch my application. Am I missing something?

I fixed the porblem by modifying the sample.jnlp file. Here is the latest version:
<?xml version="1.0" encoding="UTF-8"?>
<jnlp codebase=http://[my-ip-address]:8080/WebStart/Sample>
<href="sample.jnlp">
<information>
<title>Sample Launching Test</title>
<vendor>FMO</vendor>
<homepage href="www.sun.com" />
<description>Demonstration of JNLP</description>
<offline-allowed/>
</information>
<security>
<all-permissions/>
</security>
<resources>
<j2se version=1.4+ />
<jar href="sample.jar"/>
</resources>
<application-desc main-class="Sample" />
</jnlp>

Not getting application in Java Web Start

Hello Sir,
I wanted to run an application using Java Web Start. So, I created a jnlp file and i have mentioned the necessary jar files and the main class file. when I clicked on the jnlp file, the application is running in the Server using Java Web Start and its shortcuts are creates on the desktop and in the startmenu. I am able to run the application by clicking on the shortcut in the server. But I am unable to Download the application in the Java Web Start. It is not showing any Error Messages and the application is not running in the cleint machines.
The contents of the jnlp file is as follows.
<?xml version="1.0" encoding="utf-8"?>

<jnlp
spec="1.0+"
codebase="http://dev01/Dummy/New"
href="SimpleClass.jnlp">
<information>
<title>SimpleClass Demo Application</title>
<vendor>xxx</vendor>

<description>SimpleClass Demo </description>
<description kind="short">A demo of Class A and Class B Dependencies in java Web Start.</description>


<offline-allowed/>
</information>
<security>
<all-permissions/>
</security>
<resources>
<j2se version="1.4.0"/>
<jar href="ClassLib.jar"/>
</resources>
<application-desc main-class="A"/>
</jnlp>
So, please Tell me how to solve this problem.
Thanking you
R.Venkatesh
MakeLogic
www.makelogic.com
[email protected]

Here is an example of my JNLP file that works.
<?xml version="1.0" encoding="utf-8"?>

<jnlp spec="1.0+" codebase="http://application:8080/application/" href="passport.jnlp">
<information>
    <title>Passport</title>
    <vendor>WIM Consulting</vendor>
    <homepage href="http://www.wim.ca"/>
    <description>application Passport.</description>
    <description kind="short">Passport</description>
    <icon href="WIMicon.gif" width="32" height="32"/>
    <icon href="WIMsplash.jpg" kind="splash"/>
    <offline-allowed/>
</information>
<security>
    <all-permissions/>
</security>
<resources>
    <j2se version="1.4+"/>
    <jar href="passport.jar"/>
    <jar href="jars/kunststoff.jar"/>
    <jar href="jars/ldapsec.jar"/>
    <jar href="jars/localedata.jar"/>
    <jar href="jars/mysql-connector-java-3.0.6-stable-bin.jar"/>
</resources>
<application-desc main-class="ca.wim.passport.startup"/>
</jnlp>I am not sure what the problem is.
"I am unable to Download the application in the Java Web Start"
If webstart in not actually downloading the jar - is the jar in the correct location?
Is the server named dev01 and the directory structure actually /Dummy/New?
Note: you do need to set up the mine type JNLP on your server,
In my case the location of the JNLP file and main jar file passport is in the following directory.
c:\Inetpub\WIMRoot\application
The additional jars are in
c:\Inetpub\WIMRoot\application
I hope this may give you some clue
rykk

Java Web Start doesn't start (Windows XP)

Hi,
I've installed Java Web Start on a Windows XP machine. When I try to run an application or I try to open Java Web Start directly the "Java Web Start" splash screen appears for a few seconds and than disappears and nothing else happens.
I heard that other people using Windows XP have the same problem. Can anyone help?
Java Runtime is 1.4.0, but I also tried some other runtimes as well with the same result.
Thanks in advance
Markus

Hi,
I found some stuff, but it didn't work for me. Maybe you can give it a try.
1. Deactivate Proxy
Add or edit javaws.cfg.proxy.setting=NONE in the javaws.cfg file.
2. Deactivate Splashscreen
Add option "-Xnosplash" in the Windows registry for the .JNLP ending, i.e. "C:\Program Files\Java Web Start\javaws.exe" "-Xnosplash" "%1"
3. Run with Java VM
I created a .BAT file:
SET JWS=C:/Programme/Java Web Start
java -cp "%JWS%/javaws.jar" "-Djnlpx.home=%JWS%" com.sun.javaws.Main %1
To run Java Web Start simply run the .BAT file. To run a specific application run the .BAT file with the complete URL of the .JNLP file.
If this works for you, please drop a note here! Thanks!
Bye
Markus

Java Web Start Problems

Hello,
I've written a program in NetBeans 4.1 and I plan on deploying it using Java Web Start. The program launches fine in NetBeans, and when I double click on the jar file on my computer it runs fine.
After building the program, I signed the jar file and created the jnlp file, then uploaded them both to my web server.
When I try to launch the program from the internet I get the following error:
Java Web Start - Unexpected Error
Unable to lanuch Test Web Application
java.lang.Exception
at com.sun.javaws.Launcher.continueLaunch(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)
I've been fiddling with this for 3 days now and I can't for the life of me figure out how to make it work. Can someone please help?
If you'd like, the application is still on my server right now, you can find it at www.studiosoft.ca/testapp
Thanks
Michael

OK,
Nevermind, I just fixed the problem.
I had to update my my jnlp file to <j2se version="1.5"/> , before I had it set to <j2se version="1.4"/> and it didn't work.

Java Web Start (JNLP) getResource return null.

I have a Java Web Start Swing application and with the Java version 1.6.0_u27.
same code run from jdk1.1.8 to jdk 1.6, more then 10 customers it's work fine, java web start only run on jdk 1.4.0 and jdk 1.5.0.
just migrate one customer from Java version 1.5.0_u6 to 1.6.0_u27.
sometimes, the getResource will return null, when system return null, then system cannot get any other resource, always return null.
It only happen in Java web start environment, work fine in command line (java/javaw), and same as the WebStart loses resources post,
"Unfortunately this cannot be reproduced easily. Sometimes this happens after some minutes, sometimes the application can be used for days without problems.",
note. all of my resource files put in the same jar file, one resource file in that jar get fail, all files will be fail.
after I get the url, I will use new BufferedInputStream(url.openStream()); to retrieve data, never use the File object.
for example, get resource from "/path/a1.xml", "/path/a2.xml"....... 30 minutes pass, get same file "/path/a1.xml" will return null, then all resource will return null.
URL url = getClass().getResource(s);
if(url == null) {
System.out.println(getClass().getResourceAsStream(s)); // also null, log only
// if the url == null, the following retrieve will be null
url = Thread.currentThread().getContextClassLoader().getResource(s);
if(url == null){
System.out.println(Thread.currentThread().getContextClassLoader().getResourceAsStream(s)); // also null, log only
ClassLoader loader = getClass().getClassLoader();
if(loader == null){
loader = ClassLoader.getSystemClassLoader();
if(loader != null) {
System.out.println(loader.getResourceAsStream(s)); // also null, log only
url = loader.getResource(s);
if(url == null) {
System.out.println("URL resource still can not found!!" + s);
Edited by: M. Jwo on 2011/11/3 上午 5:40

I ran into the same problem with JNLP and IE.
Here is the trick I am using to make IE think that it is dealing with "real" .jnlp file. This works on JBoss-3.2.1/Tomcat-4.1.24 bundle.
In web.xml:
<servlet>
<servlet-name>fakejnlp</servlet-name>
<description>jsp that generates JNLP on the fly</description>
<jsp-file>start.jsp</jsp-file>
</servlet>
<servlet-mapping>
<servlet-name>fakejnlp</servlet-name>
<url-pattern>/start.jnlp</url-pattern>
</servlet-mapping>
Now, when you request start.jnlp (perhaps, with HTTP parameters), you end up executing your start.jsp. IE is happy. One limitation, though: if you need to pass parameters, there should be no href attribute in <jnlp> element.
HTH
Alex

Java Web Start and the Mac OS

I am new to the Mac OS and to Java Web Start. Using Java Web Start to launch a Java application on the Mac is discussed in several of the posts here. However, in the requirement section of the Overview for Java Web Start says
"Requirements
Desktop/Client requirements:
The client machine requires support for the Java Runtime Environment (JRE), version 1.3 or later. Java Web Start is available for Windows 98/NT/2000/ME/XP, the Solaris Operating Environment, and Linux."
As you can see, Mac OS is not mentioned. Yet Java Web Start exists on my Mac. Am I looking at the wrong documentation? The document is located at
http://java.sun.com/javase/6/docs/technotes/guides/javaws/developersguide/overview.html#jws
I don't know how to use Java Web Start . I don't even know where to look for help. If anyone would care to offer some help it would be greatly appreciated.

You are looking in the right place alright. The reason OSX is not mentioned in the document (or, by extend, any of the official sun documents) is that sun does not (may not?) provide an official java release on OSX. Java on OSX is implemented by Apple (and much to the dismay of both users and developers, they are not doing a very good job). Still, Apple's java usually fulfills the same specifications as the official sun java, so you can take any one of sun's documents on webstart or any other technology and it will usually work on the Mac. You just can't expect sun to assure that a technology will work on a platform they have no control over...

Java Web Start on Mac OS X

Hi,
I am trying to deploy my Java (Swing) application using Java Web Start - unsigned.
When running on Mac (OS X 10.4, JRE 1.5) I seam to be getting java.security.AccessControlException when accessing different com.apple.eawt.Application methods (for providing my own customized menu support).
Examples:
� com.apple.eawt.Application.getApplication().setEnabledPreferencesMenu(false);
Results in the above exception.
� Application.getApplication().addApplicationListener(menusSupport);
Results in the above exception.
Also � since the following commands also results in a security exception:
System.setProperty("com.apple.mrj.application.apple.menu.about.name", "Test Application");
System.setProperty("apple.laf.useScreenMenuBar", "true");
I have tried setting the properties to my jnlp file:
<property name="apple.laf.useScreenMenuBar" value="Test Application"/>
<property name="com.apple.mrj.application.apple.menu.about.name" value="Test Application"/>
This had no apparent effect...
What am I doing wrong?
Kinds regards,
Inbar.

I have worked out a solution for the second issue (of menu properties)
Instead of:
<property name="com.apple.mrj.application.apple.menu.about.name" value="Test Application"/>
I added:
<title>Java Web Start Test</title>
And:
<property name="apple.laf.useScreenMenuBar" value="Test Application"/>
Seam to be the default behavior� So I completely omitted it.
I hope this helps to anyone else who is struggling�
Thanks,

Java 7 Update 25 breaks Java Web Start on Mac OS X

Hello,
After the update on Mac OS X 10.8.4 it is no longer possible to launch Web Start applications. The Java 7 splash screen appears for a brief moment, but the application isn't started. There is a Java Web Start process that remains though. I also tried this on the command-line with the same result.
Best regards,
Werner.

As the website said, Java Web Start is only supported on Mac OS X 10.1.
http://java.sun.com/products/javawebstart/
Cheers,
A.A.
I would like to know if Java Web Start works on Mac OS
8 and 9. If the answer is yes, would you please let
me know what is the package to download to achieve
that? I would also like people's comment on how
easy/hard is Java Web Start works, if it is buggy, and
how well it is working on Mac OS. I am evaluating
whether we are going to incorporate this technology
into our application. I would highly appreciate your
input.

Java Web Start no longer works after Update 4

After applying the update to Java for Mac OS X 10.5 Update 4, my webstart files (.jnlp) now all think they are Internet Explorer files to be opened in Parallels.
Does anyone know how to re-associate these files with Java? Or, otherwise, a workaround to enable me to access the applications again.

You are not alone. This has happened to me and to others. And Apple is aware of the problem.
There seem to be 2 ways.
1. Find the JNLP file in the Finder. Select "Get Info". Choose other from the Open With Pull Down Menu. Navigate to /System/Library/CoreServices and find Java Web Start.app. Then click Change All.
2. Open /System/Library/CoreServices in the Finder. This was suggested by nyagil (http://discussions.apple.com/message.jspa?messageID=9634326#9685181).

Web Start doesn't leave the gate on Linux and Mac

I am evaluating Java Web Start to decide whether to recommend it as part of a government grant proposal. My initial impression of Web Start has been a sorry one. When I go to
http://java.sun.com/products/javawebstart/demos.html
and click on one of the demos, I am redirected to the page
http://java.sun.com/products/javawebstart/needdownload.html
which tells me that I need to download Java Web Start ("a one-time process"). Fine, I click on the download link, and instead of a download, what I get is a bug-report page:
http://java.sun.com/webapps/bugreport
I have seen this behavior on both Linux and Mac OS X. (My Windows machine already had Web Start installed from several months ago; I don't know if this reflects a superior Windows support relative to Linux or Mac OS X support, or a better download software several months ago.)
This is a terrible first impression for one's software. Given these beginnings, any sane developer would run away as fast as possible from the Web Start technology. Clearly a lot of work has gone into Web Start, and to see squandered like this is surprising.
Our software's user base (research biologists) has large Macintosh and Linux constituencies. My experience with Web Start suggests that Web Start would be a disastrous choice for us. I hope there is a simple way around these obstacles.
Any suggestions would be much appreciated.
Thanks,
GFBerriz

I haven't tested JWS before JRE 1.4 so I can't recommend you anything if you require JRE 1.3 or before, but if you can install JRE 1.4, specially JRE 1.4.2 or after, JWS works very good on Linux and Windows. In both platforms I use deploy applications using JWS and they all work very good. I have no experience on Mac OS X.
Both platforms obviously require Java preinstalled. Also there is some ways to install Java automatically, this is something that must be done by an administrator as every other software that requieres installation and configuration on every PC. After that step, everything is very simple.
On Linux if you click on a .jnlp file for the first time, at least mozilla ask if you want to save the file or open it, you can select the javaws executable inside your java installation as the program to open this file, mark that that's the action you always want to do with that kind of files, and that's all. Also you can manually register .jnlp files and application/x-java-jnlp-file mime tipe as handled by javaws as the last part of the java installation and this first step will not be necesary.
On Windows the installer automatically register itself as insterested in handling jnlp files, so the previous step for linux is not required.
Hope this helps.
rivas.

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.
My take-away from the discussions has been that Gatekeeper is looking for what it considers to be executable code, including JNLP files and Java applets, to be signed via codesign which is stored as an extended HFS attribute and as a result is not transferred over HTTP unless the file is wrapped into some bundle like xip or in a disk image (dmg). Neither of these are a click-and-run experience and move me from the realm of Web Start deployment to just wrapping it up as an Apple app bundle.
Before OS X 10.8 (Mountain Lion) was released, Scott K published on the Talking Java Deployment blog an article titled Java applications and Gatekeeper where he suggested the best possible user experience comes from creating an app that is bundled with Java and signed with an Apple Devloper ID using the codesign tool. (Note this is not the same as the code signing from jarsigner in the JAR/META-INF. The article ends, edited, with a statement that Gatekeeper does not apply to command-line tools like java, javac, javah and so on. It has been my experience that it does seem to apply to javaws or whatever is used on the Mac to launch a Web Start app from a JNLP file. It is as if Apple has said they don't trust the Java security model for downloaded dynamic code and are adding an extra restriction that seems to severely limit the "click-and-run" functionality of Web Start or applets.
Is there anything I can do to get a JNLP file to "just work" for Mac end users like it use to before 10.8 / Gatekeeper?
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

Java Web Start and JDK Logger

The JDK logger uses the logging.properties file in the JRE lib directory. However I would like to use my own logging.properties file as part of the application that uses Java Web Start. This config file will be part of the application jar file.
The usual way to specify the logging properties file is by using the -D parameter
-Djava.util.logging.config.file=logging.properties
How do I specify my own logging.properties file for Java Web Start? TIA.

I'm trying to track down a solution to that problem too. The reason is because of the strange way webstart is creating its own log. It attaches a class: com.sun.deploy.util.LoggerTraceListener which records console messages. The way it does this is by generating its own log messages at the FINE level. If you look in the javaws.log file which is inside of the webstart cache area, you can see the result of this. On a mac this is located at: ~/Libraries/Caches/java/log
So if the console handler is configured to printing out FINE level messages then an infinite recursion happens. If you change the console handler's level so it isn't printing FINE messages then it works. But I want to see my own FINE level messages, so that isn't a good solution for me.
I tried setting com.sun.deploy.level=INFO in the global logging.properties, so webstart's log messages would not show up in the console. However, it appears webstart resets this level on startup.
If you set that property using the resource loading you figured out above, it might work because that should happen after webstart does its own logging configuration.

Windows Printing vs Java Web Start

I am having a hard time printing from a Java Web Start application to a printer attached to a Windows server. I don't have problems with this printer and other (i.e Mac) applications. When I try to print from the JWS app the job gets sent to the Printer window but the Status is "On Hold (Authentication Required)". If I click the Resume button I get prompted for my (Windows) username and password, after that the print job goes through normally. I noticed the Print window shows this job's username as "System Administrator". When when I print from a Mac application the username is blank and the print job goes straight to the printer. The Activity Monitor shows I am the owner of the JWS process. On Tiger web start just prints normally. This is very frustrating. Any ideas?

I have tested this further and have additional observations.
1. The problem is observed in java applications, like JEdit, not just web start applications.
2. The scenario described in the original post applies to admin users. It is possible to work around the issue by creating a custom printing queue using the Advanced tab in the Printing CP. The normal Windows printing queue looks like: "smb://printServer:port/Printer". If you create a custom queue of this form: "smb://windowsUsername:password@printServer:port/Printer" then the java application will print without requiring further confirmation in the Print queue dialog.
3. The scenario and workaround do not work with a standard user. With a standard user the java application presents a modal dialog that indicates a printing failure. The dialog does not get dismissed after clicking the OK button, but does close when the java application is quit. I have not found any work arounds that allow standard users to print.

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

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