Jnlp.jar

Author: bonnaire
Hello,
I wanted to make an application usable through JavaWebStart technology, it
needs to
read and write files on the local disk so, as I have seen, I need the
FileOpenService and FileSaveService of the javax.jnlp API.
But I can't find jnlp.jar ! I use jdk1.4 and I have installed the latest javaWebstart
pack :
javaws-1_0_1_02-win-int.exe.
Can you tell me what have I missed ?
Thanks
Richard

The jnlp.jar can be found in the Webstart Developers Pack it is not part of the Webstart Client.
On the other hand if your application needs access to the disk you don't need those services. Signing your Jar Files and granting all-permission should do the trick

Similar Messages

Where do you get jnlp.jar for Mac Leopard 10.5.5

Hello,
I am trying to use Persistence in JNLP on a Mac 10.5.5 with either 1.5 or 1.6. I have searched
my local disk the Mac developer web site and this website for "jnlp java Mac Leopard" no useful results.
Where can I get a jnlp.jar file that works on a Mac?
Rinaldo

I was able to get the question answered on the mailto:[email protected] list.
My friend http://www.google.com/search?q=jnlp.jar+mac+java&ie=utf-8&oe=utf-8&aq=t answered it.
Greg also provided some very useful information, especially the mdfind javaws.jar command
http://lists.apple.com/archives/Java-dev/2008/Nov/msg00052.html
I see that in JDK 1.5, javaws.jar is included. For now I will assume that the javaws.jar classes have been moved to javaws.jar
jar tvf ./Library/Frameworks/JavaVM.framework/Versions/1.6.0/Home/lib/javaws.jar | grep jnlp
        0 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/
3147 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/ApiDialog.class
1626 Fri Sep 05 10:32:48 EDT 2008 com/sun/jnlp/AppletAudioClip$1.class
3922 Fri Sep 05 10:32:48 EDT 2008 com/sun/jnlp/AppletAudioClip.class
1377 Fri Sep 05 10:32:48 EDT 2008 com/sun/jnlp/AppletContainer$1.class
   990 Fri Sep 05 10:32:48 EDT 2008 com/sun/jnlp/AppletContainer$2.class
1329 Fri Sep 05 10:32:48 EDT 2008 com/sun/jnlp/AppletContainer$AppletContainerContext$1$1.class
1452 Fri Sep 05 10:32:48 EDT 2008 com/sun/jnlp/AppletContainer$AppletContainerContext$1.class
2942 Fri Sep 05 10:32:48 EDT 2008 com/sun/jnlp/AppletContainer$AppletContainerContext.class
1551 Fri Sep 05 10:32:48 EDT 2008 com/sun/jnlp/AppletContainer$AppletContainerStub.class
   710 Fri Sep 05 10:32:48 EDT 2008 com/sun/jnlp/AppletContainer$LoadImageAction.class
4841 Fri Sep 05 10:32:48 EDT 2008 com/sun/jnlp/AppletContainer.class
   234 Fri Sep 05 10:32:48 EDT 2008 com/sun/jnlp/AppletContainerCallback.class
1362 Fri Sep 05 10:32:48 EDT 2008 com/sun/jnlp/BasicServiceImpl$1.class
1158 Fri Sep 05 10:32:48 EDT 2008 com/sun/jnlp/BasicServiceImpl$2.class
   992 Fri Sep 05 10:32:48 EDT 2008 com/sun/jnlp/BasicServiceImpl$BasicServiceBrowser.class
2397 Fri Sep 05 10:32:48 EDT 2008 com/sun/jnlp/BasicServiceImpl.class
1279 Fri Sep 05 10:32:48 EDT 2008 com/sun/jnlp/CheckServicePermission.class
   868 Fri Sep 05 10:32:48 EDT 2008 com/sun/jnlp/ClipboardServiceImpl$1.class
1668 Fri Sep 05 10:32:48 EDT 2008 com/sun/jnlp/ClipboardServiceImpl$2.class
2787 Fri Sep 05 10:32:48 EDT 2008 com/sun/jnlp/ClipboardServiceImpl.class
1159 Fri Sep 05 10:32:48 EDT 2008 com/sun/jnlp/DownloadServiceImpl$1.class
1652 Fri Sep 05 10:32:48 EDT 2008 com/sun/jnlp/DownloadServiceImpl$10.class
1318 Fri Sep 05 10:32:48 EDT 2008 com/sun/jnlp/DownloadServiceImpl$2.class
1474 Fri Sep 05 10:32:48 EDT 2008 com/sun/jnlp/DownloadServiceImpl$3.class
1679 Fri Sep 05 10:32:48 EDT 2008 com/sun/jnlp/DownloadServiceImpl$4.class
2519 Fri Sep 05 10:32:48 EDT 2008 com/sun/jnlp/DownloadServiceImpl$5.class
1739 Fri Sep 05 10:32:48 EDT 2008 com/sun/jnlp/DownloadServiceImpl$6.class
1942 Fri Sep 05 10:32:48 EDT 2008 com/sun/jnlp/DownloadServiceImpl$7.class
1517 Fri Sep 05 10:32:48 EDT 2008 com/sun/jnlp/DownloadServiceImpl$8.class
1445 Fri Sep 05 10:32:48 EDT 2008 com/sun/jnlp/DownloadServiceImpl$9.class
1398 Fri Sep 05 10:32:48 EDT 2008 com/sun/jnlp/DownloadServiceImpl$DefaultProgressImpl$1.class
2914 Fri Sep 05 10:32:48 EDT 2008 com/sun/jnlp/DownloadServiceImpl$DefaultProgressImpl.class
2254 Fri Sep 05 10:32:48 EDT 2008 com/sun/jnlp/DownloadServiceImpl$ProgressHelper.class
8288 Fri Sep 05 10:32:48 EDT 2008 com/sun/jnlp/DownloadServiceImpl.class
   900 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/ExtendedServiceImpl$1.class
1051 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/ExtendedServiceImpl$2.class
3188 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/ExtendedServiceImpl.class
   707 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/ExtensionInstallerServiceImpl$1.class
   961 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/ExtensionInstallerServiceImpl$2.class
   711 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/ExtensionInstallerServiceImpl$3.class
5918 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/ExtensionInstallerServiceImpl.class
   787 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/FileContentsImpl$1.class
   820 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/FileContentsImpl$2.class
   928 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/FileContentsImpl$3.class
   791 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/FileContentsImpl$4.class
   792 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/FileContentsImpl$5.class
1002 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/FileContentsImpl$6.class
4353 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/FileContentsImpl.class
2155 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/FileOpenServiceImpl$1.class
2323 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/FileOpenServiceImpl$2.class
1144 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/FileOpenServiceImpl$WindowsAltFileSystemView$FileSystemRoot.class
3017 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/FileOpenServiceImpl$WindowsAltFileSystemView.class
2974 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/FileOpenServiceImpl.class
2847 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/FileSaveServiceImpl$1.class
3257 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/FileSaveServiceImpl.class
1087 Fri Sep 05 10:32:48 EDT 2008 com/sun/jnlp/ImageCache.class
1937 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/JNLPCachedJarURLConnection$1.class
5559 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/JNLPCachedJarURLConnection.class
   940 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/JNLPClassLoader$1.class
   928 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/JNLPClassLoader$2.class
1285 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/JNLPClassLoader$3.class
12413 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/JNLPClassLoader.class
2555 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/JNLPFileFilter.class
6074 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/JNLPRandomAccessFileImpl.class
   788 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/JnlpLookupStub$1.class
2918 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/JnlpLookupStub.class
2044 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/MeteredFileOutputStream.class
   938 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/PersistenceServiceImpl$1.class
1022 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/PersistenceServiceImpl$10.class
1805 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/PersistenceServiceImpl$11.class
1023 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/PersistenceServiceImpl$2.class
   845 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/PersistenceServiceImpl$3.class
   877 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/PersistenceServiceImpl$4.class
   981 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/PersistenceServiceImpl$5.class
   875 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/PersistenceServiceImpl$6.class
   871 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/PersistenceServiceImpl$7.class
   885 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/PersistenceServiceImpl$8.class
   974 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/PersistenceServiceImpl$9.class
7991 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/PersistenceServiceImpl.class
   809 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/PrintServiceImpl$1.class
1189 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/PrintServiceImpl$2.class
   969 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/PrintServiceImpl$3$1.class
1717 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/PrintServiceImpl$3.class
2986 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/PrintServiceImpl.class
1441 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/SingleInstanceServiceImpl$1.class
1673 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/SingleInstanceServiceImpl$TransferListener.class
3938 Fri Sep 05 10:32:50 EDT 2008 com/sun/jnlp/SingleInstanceServiceImpl.class
     0 Fri Sep 05 10:32:48 EDT 2008 javax/jnlp/
   258 Fri Sep 05 10:32:50 EDT 2008 javax/jnlp/BasicService.class
   251 Fri Sep 05 10:32:50 EDT 2008 javax/jnlp/ClipboardService.class
1392 Fri Sep 05 10:32:50 EDT 2008 javax/jnlp/DownloadService.class
   349 Fri Sep 05 10:32:50 EDT 2008 javax/jnlp/DownloadServiceListener.class
   309 Fri Sep 05 10:32:50 EDT 2008 javax/jnlp/ExtendedService.class
   659 Fri Sep 05 10:32:50 EDT 2008 javax/jnlp/ExtensionInstallerService.class
   598 Fri Sep 05 10:32:50 EDT 2008 javax/jnlp/FileContents.class
   370 Fri Sep 05 10:32:50 EDT 2008 javax/jnlp/FileOpenService.class
   430 Fri Sep 05 10:32:50 EDT 2008 javax/jnlp/FileSaveService.class
1451 Fri Sep 05 10:32:50 EDT 2008 javax/jnlp/JNLPRandomAccessFile.class
   688 Fri Sep 05 10:32:50 EDT 2008 javax/jnlp/PersistenceService.class
   350 Fri Sep 05 10:32:50 EDT 2008 javax/jnlp/PrintService.class
   994 Fri Sep 05 10:32:50 EDT 2008 javax/jnlp/ServiceManager.class
   303 Fri Sep 05 10:32:50 EDT 2008 javax/jnlp/ServiceManagerStub.class
   185 Fri Sep 05 10:32:50 EDT 2008 javax/jnlp/SingleInstanceListener.class
   250 Fri Sep 05 10:32:50 EDT 2008 javax/jnlp/SingleInstanceService.class
   472 Fri Sep 05 10:32:50 EDT 2008 javax/jnlp/UnavailableServiceException.class

Why isn't jnlp.jar signed by Sun?

The jnlp.jar in the developer pack is not signed with Sun's certificate. Why is that? An omission or intentional?
If I'm delivering my app signed with my Verisign cert, I have to now deliver jnlp.jar also signed with my cert, right?
Thx,
Max

The jnlp.jar is part of Java Web Start, so no - you don't have to sign and supply it, the JWS install takes care of it for you.
Cheers,
Gavin

JNLP jar paths

I have my jnlp with the main jar files, and another folder of jars elsewhere that i wish to reference in the jnlp file.
However i'm seeng some errors
If i have a directory structure as follows
C:\Folder\App\install.jnlp
C:\Folder\App\*.jar
C:\Folder\Common\*.jar <== trying to access these
<jar href="/Common/jars/cms/metalthemer.jar"/>
calling from the command line:
javaws -import -codebase file:///C:/Folder/App/ c:\Folder\App\install.jnlp
Worst thing is in the wrapped exceptions
it's trying to find
c:\Folder\App\on\jars\cms\metalthemer.jar
notice that 'on' which doesn't exist, and it is actually part of Comm_on_
since when i play with the HREF in the jar tag, i get 'mon', 'on' etc etc
Thanks

bump
filed a bug on this also

BasicService.showDocument - Can the URL be in a JNLP JAR Resource?

I'm trying to use BasicService.showDocument( url ) to display a help file that is part of a JAR file in the JNLP resource list.
Getting the URL succeeds using...
url = getClass().getResource( "/com/egh/help/files/tutorial.html" );
and that file is indeed present relative to my help-s.jar file which is in the JNLP resource list.
but then IE comes up and reports the page cannot be displayed...
jar:file:/C:/Program%20Files/Java%20Web%20Start/.javaws/cache/http/Droger.egh.com/P80/DMdemo/RMhelp-s.jar!/com/egh/help/files/tutorial.html
Would this be expected to work? Or would I have to use an absolute URL for this to work? (which, btw, would defeat the point).
... Roger

That may be true, but it is the BasicService.showDocument call that is building the URL. To me it is a JAR based "relative" resource. And I have no way to know the Java Web Start name/location of the cached jar.
If there is a simple way to make it work, SUN will hopefully do so in the BasicService, otherwise the value of it is completely undermined.

JNLP jar (re)download

Hello All ,
I might be having a fundamental misconception here ; if so , please help me put it right.
I have a JNLP file which is automatically generated (automatic here actually indicates that a script will populate a particular field in the file (which holds references to some jar files). The rest of the file does not change)).
I am using the <version> attribute of the <jnlp> tag to indicate the version of the application.
My expectation is that each time this version attribute changes , the .jnlp file wlil be re-downloaded and also will be re-downloaded each of the jar files it references.
Below is a representative code sample :
<code>
<?xml version="1.0"; encoding="utf-8"?>
<jnlp
spec="1.0+";
codebase="$$codebase"
href="$$name"
version="%VERSION%">

<information>
. 
</information>
<security><all-permissions/></security>
<resources>
<j2se version="1.6+"; initial-heap-size="32m" max-heap-size="512m" />
<jar href="my.jar";/>
<jar href="my2.jar";/>
<property name="property1" value="value1" />
<extension href="another.jnlp"; /> 
</resources>
<application-desc main-class="my.main";/>
</jnlp>
</code>
The following scenario is what I am trying to implement :
a)Deploy the jnlp application on a server and access it by using http://localhost:XXXX/myapp
b)It downloads and installs and runs.
c)I close the app.
d)I now change one of the jar files referenced in another.jnlp and also some contents in my.jar and my2.jar.
e)I now repeat steps a) and b) (the .jnlp files "version" attributes are updated accordingly)
EXPECTATION : The jnlp file is re-downloaded and so are all the referenced jars[of particular interest my2.jar and any referenced jars in another.jnlp].
OBSERVATION : The jnlp file is re-downloaded but the OLD jars are still being used (I know its the old jars because I change something in the jar on the server and the change is not reflected in the client browser).
If I clear the java cache by doing a "javawas - uninstall" , I get the behaviour I seek in EXPECTATION ; however I do not want to clear the cache everytime I update some jar or other ; I want jnlp to detect that a jar has changed and re-download it.
How do I go about achieving this?

elie_nasrani wrote: I have a JNLP application which will run over internet , my problem is that anyone can go to the url and launch the application and download all the jars, before even logging in, i'm worried about using this for Denial of service.
is there a way that i can control the jar files download time, like only download the necessary jar first and when jars are needed will be downloaded eventually
Web start offers lazy downloads, as well as the DownloadService* (DS) to help with this kind of problem.
'Lazy' means the resource is only downloaded when needed, but using the DS offers even greater control, even to the extent of manually blocking a download - if needed.
* e.g. of the Download service, be sure to follow the links.
<http://www.physci.org/jws/#ds>
As far as 'signing' goes, I cannot imagine how that would help for your problem. Not only are signed Jar's (at least slightly) larger, but they can also be used by JWS apps. coming from other domains! If your app. is sandboxed, I strongly recommend keeping it as unsigned code.
Why is your JNLP file exposed to the general public? Don't the users have to log in before they can get to the page with link to the application JNLP?
If that is the case, the only chance for users who are not logged in to launch it, is if a friend sends them a direct link to the JNLP file.
As an aside, I generally do not have time to look at posts with no 'dukes' assigned (see links at upper left), if getting a solution is important to you, it is a good idea to add some.

Control JNLP jar files download time

Hello,
I have a JNLP application which will run over internet , my problem is that anyone can go to the url and launch the application and download all the jars, before even logging in, i'm worried about using this for Denial of service.
is there a way that i can control the jar files download time, like only download the necessary jar first and when jars are needed will be downloaded eventually
Any Help would be appreciaetd
regards

elie_nasrani wrote: I have a JNLP application which will run over internet , my problem is that anyone can go to the url and launch the application and download all the jars, before even logging in, i'm worried about using this for Denial of service.
is there a way that i can control the jar files download time, like only download the necessary jar first and when jars are needed will be downloaded eventually
Web start offers lazy downloads, as well as the DownloadService* (DS) to help with this kind of problem.
'Lazy' means the resource is only downloaded when needed, but using the DS offers even greater control, even to the extent of manually blocking a download - if needed.
* e.g. of the Download service, be sure to follow the links.
<http://www.physci.org/jws/#ds>
As far as 'signing' goes, I cannot imagine how that would help for your problem. Not only are signed Jar's (at least slightly) larger, but they can also be used by JWS apps. coming from other domains! If your app. is sandboxed, I strongly recommend keeping it as unsigned code.
Why is your JNLP file exposed to the general public? Don't the users have to log in before they can get to the page with link to the application JNLP?
If that is the case, the only chance for users who are not logged in to launch it, is if a friend sends them a direct link to the JNLP file.
As an aside, I generally do not have time to look at posts with no 'dukes' assigned (see links at upper left), if getting a solution is important to you, it is a good idea to add some.

Jnlp .jar download

Hi,
I am making a java web start application. I have so many jar files, which are being used by that application...I am adding the jar files like this:
<jar href="lib/appframework-1.0.3.jar"/>
<jar href="lib/swing-worker-1.1.jar"/>
Actually When I try to run the application offline, it works fine. But when I try to run the application online, it gets very slow...it takes time to download jar files(I think so).....and it takes five minutes to execute a functionality by the application. I don't know how can I fix this. The size of some of the jar files in the resources are big...
Please let me know the solution of this problem!
Thank you.

Please post full JNLP file here.
How big is "big" here?
Do you have <update check="background"> in your JNLP file?
Debug hints:
* Enable java console, enable verbose tracing (http://download.oracle.com/javase/7/docs/webnotes/tsg/TSG-Desktop/html/plugin.html#gcexdf)
and see what is going on when application takes longer than you expect
* Use http sniffer tools to trace network connections on startup (e.g. wireshark). Your goal is to have 0 network connections when application is cached.

JNLP Jarring - Class Not Found

Hi,
And again, java web start is one step ahead of me ;p
(re the last post)
I have simplified my requirements and have restricted my application to just one look and feel. That is in the original downloaded jar it came with (signed).
My application has now gone through several versions, and each version has had several jar files containing different classes and things. I have never yet needed to specify a jar file in the manifest of another jar file to make it work.
However, it cannot load the look and feels now. In the main class, I use:
UIManager.setLookAndFeel("com.incors.plaf.kunststoff.KunststoffLookAndFeel");- where the look and feel is in a jar file pointed to in my classpath. Run locally, it works fine, but run over JNLP it throws a ClassNotFoundException.
If I change it to:
UIManager.setLookAndFeel(new com.incors.plaf.kunststoff.KunststoffLookAndFeel());Then the look and feel loads ok in both local and jnlp modes, but now it cannot find UI classes for things like JButtons when running over JNLP.
Im using exactly the same jar file each time. Can anyone help?
DS

Got to stop doing this..
Those of you having problems in this area take a look at these two links..
http://developer.java.sun.com/developer/bugParade/bugs/4155617.html
and
http://forum.java.sun.com/thread.jsp?forum=38&thread=166873
Its a botch method round it (and should have been fixed by now..?) but it basically entails providing a class loader gotten from a JComponent.
Ive created a little class subclassing JApplet:
private static class LFLoader extends JApplet
    public LFLoader() {}
    public void load()
      try
        UIManager.setLookAndFeel(new com.incors.plaf.kunststoff.KunststoffLookAndFeel());
        UIManager.getLookAndFeelDefaults().put( "ClassLoader", cl );
        aei.gui.components.JJSetup.setSimpleLFUsed(false);
      catch(Exception e)
      { System.out.println(e.getMessage()); e.printStackTrace(); }
}You cant just call new Applet().getClass().getClassLoader() for some reason.
The type of classloader displayed when the application starts..? sun.misc.Launcher$AppClassLoader if running locally, or com.sun.jnlp.JNLPClassLoader if over JNLP.
My app now works but .. subclassing an applet to get it going .. eech!
DS

JDeveloper and jnlp.jar or javaws.jar

Hi, I am developing an applet with the JDeveloper 12c, I am using the JSDK 1.7.
While implementing the java program I need to use FileOpenService or FileContent classes for that I need to import javax.jnlp.*
But is not included in the 1.7 JDK,
My sorce code is like this:
        try {
            FileOpenService fileOpenService = (FileOpenService) ServiceManager.lookup("javax.jnlp.FileOpenService");
            FileContents contents = fileOpenService.openFileDialog(null,null);
Do you know how can I import this classes at this environment??.
Thank you in advance.

what do stacktrace mean??????? Please do not hold down you '?' key.
One question mark is enough.
Here is a simple example of a stacktrace..
If you run this code..public class ShowStackTrace {
public static void main(String[] args) {
    Object object1 = new Object();
    System.out.println( object1.getClass() );
    Object object2 = null;
    System.out.println( object2.getClass() );
}It writes this to the console..class java.lang.Object
Exception in thread "main" java.lang.NullPointerException
        at ShowStackTrace.main(ShowStackTrace.java:6)
Press any key to continue . . .The first line is program ouput.
The 2nd & 3rd lines are a stacktrace.
The stacktrace tells us exactly which line
of the program failed (line 6), and what
went wrong (NullPointerException).
Both Java applets and Java Web-Start
applications can have a console appear.
The console will show any stacktraces
that happen in the code (or it should), and
you need to find how to open the
web-start console, on your PC.
What OS and Java (version) are
you running?
And another thing. Please do not
ignore me. Twice I have asked you
to post your JNLP file, yet twice you
have not done so, and not made any
comment.
Feel free to ask questions about
anything I write that is not clear,
but be warned I will not ask again*,
for you to show us the JNLP file.
* Instead, I will just just stop repeating
myself, and stop trying to help you.

Accessing JNLP & jars from webserver through IBM TAM via Webstart

We have a swing application (running on Windows desktop) that is downloaded from a [Covalent] Apache webserver via webstart. However, when an IBM's Tivoli Access Manager (TAM) authentication server is introduced before the webserver, the webstart download fails since the TAM server is expecting the authentication ID & password. We are not clear on how webstart can provide this authentication information to the TAM server. The swing application uses JRE 1.5 and webstart version is 1.5.
Has anyone gone through a scenario like this ? Any pointers that help resolve this issue will be greatly appreciated.
Thanks.

http://java.sun.com/docs/books/tutorial/deployment/webstart/security.html

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 ...

Bug!?! 100% CPU usage when referencing secured JARs in unsecured JNLP

hi,
i think i just found a bug in jws but i'm not sure yet. it would be nice if somebody can verify this before i create a bug report.
this is my JNLP file (test.jnlp):
<jnlp ...>
<information>
    <title>Test</title>
    <shortcut online="true">
      <desktop/>
    </shortcut>
</information>
<security>
    <all-permissions/>
</security>
<update check="always" policy="always"/>
<resources>
    <java version="1.6"/>
    <jar href="jar/mySecuredJar.jar" download="eager" main="true"/>
</resources>
<application-desc main-class="test.MyTest"/>
</jnlp>this is the file structure on the server:
download/      // public folder
   test.jnlp
   jar/        // private folder secured via basic authentication
      mySecuredJar.jarwhen i access the jnlp file for the first time via browser the jws login dialog opens asking me for credentials since test.jnlp internally references a jar that is in a secured area. while this jws dialog is open my cpu usage is normal - javaw.exe takes about 5%.
however, when i open my application for the 2nd time via desktop shortcut, the jws authentication dialog opens again (jws looks for updates of my jar before the application starts) and javaw.exe takes about 95% of my cpu as long as the dialog is open!!!
when i put the jnlp file in the secured area as well, everything works smoothly. however, this forces users to enter credentials in a browser authentication dialog (browser needs to access the secured jnlp) as well as in the above mentioned jws authentication dialog.
can anybody reproduce this? should i file a bug report?
i tested this on win xp with jre 1.6.0_11.
regards,
stephan

Please, [file |http://javafx.netbeans.org/issues/enter_bug.cgi?component=javafx] an issue on it.

How can I create program JNLP

I have a program (javafx)
this program includ swingButton to open SwingFileChooser.
In netbean6.71 can run this program on standard execution
run command in command windows
javafx -jar test.jar the program is ok
but
I run the test.jnlp ,swing button is not ok
<?xml version="1.0" encoding="UTF-8"?>
<jnlp spec="1.0+" codebase="http://localhost:8082/servlet/org.netbeans.modules.javafx.project.JnlpDownloadServlet/D%3A/JAVA/MyBlog/test2/dist/" href="test2.jnlp">
<information>
<title>test2</title>
<vendor>kevnlin</vendor>
<homepage href="http://localhost:8082/servlet/org.netbeans.modules.javafx.project.JnlpDownloadServlet/D%3A/JAVA/MyBlog/test2/dist/"/>
<description>test2</description>
<offline-allowed/>
<shortcut>
<desktop/>
</shortcut>
</information>
<resources>
<j2se version="1.5+"/>
<property name="jnlp.packEnabled" value="true"/>
<property name="jnlp.versionEnabled" value="true"/>
<extension name="JavaFX Runtime" href="http://dl.javafx.com/1.2/javafx-rt.jnlp"/>
<jar href="test2.jar" main="true"/>
<jar href="lib/customizer.jar"/>
<jar href="lib/dt.jar"/>
<jar href="lib/jmf.jar"/>
<jar href="lib/tools.jar"/>
<jar href="lib/mediaplayer.jar"/>
<jar href="lib/multiplayer.jar"/>
<jar href="lib/sound.jar"/>
</resources>
<application-desc main-class="com.sun.javafx.runtime.main.Main">
<argument>MainJavaFXScript=test2.Main</argument>
</application-desc>
<update check="background">
</jnlp>
how can I crate jnlp with javafx command

how can I crate jnlp with javafx command Run javafxpackager
Note: the generated JNLP is incorrect. Not sure if that's the source of your troubles, but anyway, it is better to add a final slash to the update tag:
{color:#8000A0}*<update check="background"/>*{color}

Deploying Application Without codebase and an extension (installer.jnlp)

Hi,
It seems that the deployment file can be relative to launch.html but the extension file requires the codebase attribute.
This launch fails
http://www.dksy.net/auctionzoom/downloads/download/jpawebstart-no-codebase/launch.html
this launch succeeds
http://www.dksy.net/auctionzoom/downloads/download/jpawebstart/launch.html
In the second case, the codebase attribute is specified
<jnlp codebase="http://www.dksy.net/auctionzoom/downloads/download/jpawebstart/" href="installer.jnlp" spec="1.0+">This reference documents the deployment file (launch.jnlp), but not the extension (installer.jnlp).
http://java.sun.com/docs/books/tutorial/deployment/deploymentInDepth/deployingWithoutCodebase.html
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
    <head>
        <title>Test page for launching the application via JNLP No Codebase</title>
    </head>
    <body>
        <h3>Test page for launching the application via JNLP No Codebase</h3>
        <p><a href="javascript:deployJava.launchWebStartApplication('launch.jnlp');">Launch Paystation application</a></p>
        <script src="http://java.com/js/deployJava.js"></script>
    </body>
</html>
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<jnlp href="launch.jnlp" spec="1.0+">
    <information>
        <title>JPAWebStart</title>
        <vendor>AZ</vendor>
        <homepage href=""/>
        <description>JPAWebStart</description>
        <description kind="short">JPAWebStart</description>
        <shortcut online="true">
            
            <desktop/>
            
            <menu submenu="JPAWebStart"/>
        </shortcut>
        <related-content href="README.TXT">
            <title>Readme File</title>
            <description/>
        </related-content>
    <offline-allowed/>
</information>
    <security>
        <all-permissions/>
    </security>
    <update check="background" policy="prompt-update"/>
    <resources>
<j2se version="1.6+"/>
<jar eager="true" href="JPAWebStart.jar" main="true"/>
    <jar href="lib/antlr-2.7.6.jar"/>
<jar href="lib/asm.jar"/>
<jar href="lib/asm-attrs.jar"/>
<jar href="lib/cglib-2.1.3.jar"/>
<jar href="lib/commons-collections-2.1.1.jar"/>
<jar href="lib/commons-logging-1.1.jar"/>
<jar href="lib/dom4j-1.6.1.jar"/>
<jar href="lib/ehcache-1.2.3.jar"/>
<jar href="lib/jdbc2_0-stdext.jar"/>
<jar href="lib/jta.jar"/>
<jar href="lib/hibernate3.jar"/>
<jar href="lib/hibernate-tools.jar"/>
<jar href="lib/hibernate-annotations.jar"/>
<jar href="lib/hibernate-commons-annotations.jar"/>
<jar href="lib/hibernate-entitymanager.jar"/>
<jar href="lib/javassist.jar"/>
<jar href="lib/ejb3-persistence.jar"/>
<jar href="lib/derby.jar"/>
<jar href="lib/log4j-1.2.15.jar"/>
<jar href="lib/jardiff.jar"/>
<jar href="lib/jnlp-servlet.jar"/>
<jar href="lib/jnlp.jar"/>
<extension href="installer.jnlp" name="Installer" version=""/>
</resources>
    <resources>
        <jar href="JPAWebStartMain.jar" main="false"/>
    </resources>
    <application-desc main-class="demo.main.JPADemo">
    </application-desc>
</jnlp>
<?xml version="1.0" encoding="UTF-8"?>
<jnlp href="installer.jnlp" spec="1.0+">
    <information>
        <title>Installer</title>
        <vendor>AZ</vendor>
        <offline-allowed/>
    </information>
    <security>
        <all-permissions/>
    </security>
    <resources>
        <j2se version="1.6+" />
        <jar href="installer.jar" main="true" />
    </resources>
    <installer-desc main-class="com.az.installer.Installer">
        
    </installer-desc>
</jnlp>

Can't see any question mark and can't actually guess one, you wrote out quite a dissertation on it. Are you giving away 10 dukes for the first one telling you 'CORRECT!' (I really hope so)?
Bye.

Jnlp.jar

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