Extra jar fetched but not loaded ?

Question

Hi there !
I have a very strange issue. I have planned to use JNLP to "deploy" a Java application via HTTP, but I ran into some issues I was able to reproduce even using very simple projects (e.g. a Blank desktop app).
The problem I have is that even though the JNLP file and all the resources are fetched correctly via HTTP (see Apache logs extracts below), the Java Console tells me it couldn't load a class although the jar file containing it is loaded correctly.
Here is the JNLP file (even with such a basic JNLP it fails) :
<jnlp codebase="http://lt087/dev/TestValidation/" href="launch.jnlp" spec="1.0+">
<information>
<title>ValidationApp for example purposes</title>
</information>
<update check="background"/>
<resources>
<j2se version="1.5+"/>
<jar href="TestValidation.jar" main="true"/>
<jar href="lib/appframework-1.0.3.jar"/>
<jar href="lib/swing-worker-1.1.jar"/>
</resources>
<application-desc main-class="validationapp.TestValidationMainApp" />
<security>
<all-permissions/>
</security>
</jnlp>
Here are the apache logs to confirm the files are fetched correctly :
172.29.55.147 - - [23/Nov/2010:09:55:25 +0100] "GET /dev/TestValidation/launch.jnlp HTTP/1.1" 200 677 "-" "JNLP/6.0 javaws/1.6.0_22 (b04) Java/1.6.0_22"
172.29.55.147 - - [23/Nov/2010:09:55:25 +0100] "GET /dev/TestValidation/TestValidation.jar HTTP/1.1" 200 119374 "-" "JNLP/6.0 javaws/1.6.0_22 (b04) Java/1.6.0_22"
172.29.55.147 - - [23/Nov/2010:09:55:25 +0100] "GET /dev/TestValidation/lib/swing-worker-1.1.jar HTTP/1.1" 200 13258 "-" "JNLP/6.0 javaws/1.6.0_22 (b04) Java/1.6.0_22"
172.29.55.147 - - [23/Nov/2010:09:55:25 +0100] "GET /dev/TestValidation/lib/appframework-1.0.3.jar HTTP/1.1" 200 272709 "-" "JNLP/6.0 javaws/1.6.0_22 (b04) Java/1.6.0_22"
And here is the exception I'm getting (after the dialog asking me to trust the editor) :
java.lang.NoClassDefFoundError: org/jdesktop/application/SingleFrameApplication
     at java.lang.ClassLoader.defineClass1(Native Method)
     at java.lang.ClassLoader.defineClassCond(Unknown Source)
     at java.lang.ClassLoader.defineClass(Unknown Source)
     at java.security.SecureClassLoader.defineClass(Unknown Source)
     at java.net.URLClassLoader.defineClass(Unknown Source)
     at java.net.URLClassLoader.access$000(Unknown Source)
     at java.net.URLClassLoader$1.run(Unknown Source)
     at java.security.AccessController.doPrivileged(Native Method)
     at java.net.URLClassLoader.findClass(Unknown Source)
     at com.sun.jnlp.JNLPClassLoader.findClass(Unknown Source)
     at java.lang.ClassLoader.loadClass(Unknown Source)
     at java.lang.ClassLoader.loadClass(Unknown Source)
     at java.lang.ClassLoader.loadClass(Unknown Source)
     at com.sun.javaws.Launcher.doLaunchApp(Unknown Source)
     at com.sun.javaws.Launcher.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: org.jdesktop.application.SingleFrameApplication
     at java.net.URLClassLoader$1.run(Unknown Source)
     at java.security.AccessController.doPrivileged(Native Method)
     at java.net.URLClassLoader.findClass(Unknown Source)
     at com.sun.jnlp.JNLPClassLoader.findClass(Unknown Source)
     at java.lang.ClassLoader.loadClass(Unknown Source)
     at java.lang.ClassLoader.loadClass(Unknown Source)
     ... 16 more
I have tried running it from a stock VM running a standard 1.6.22 JRE but I had the same issue, does anyone have an idea why it fails ?

Answer 1

So you are saying that JaNeLA showed no red errors at the end of the changes?
As an aside, please use the code tags for code, XML/HTML or input/output. How to do it is described on the sticky post at the top of the forum listing. Here is how the code tags make XML appear..
<!DOCTYPE jnlp PUBLIC "-//Sun Microsystems, Inc//DTD JNLP Descriptor 6.0//EN" "http://java.sun.com/dtd/JNLP-6.0.dtd">
<jnlp spec="6.0+" codebase="http://lt087/dev/TestValidation/" href="launch.jnlp">
<information>
<title>ValidationApp</title>
<vendor>Example Inc</vendor>
<homepage href="http://www.example.com"/>
<description>Application de test pour validation</description>
<description kind="short">Validation App for example purposes</description>
<offline-allowed/>
</information>
<security>
<all-permissions/>
</security>
<update check="always" policy="always" />
<resources>
<java version="1.6+" href="http://java.sun.com/products/autodl/j2se" />
<jar href="TestValidation.jar" main="true"/>
<jar href="lib/appframework-1.0.3.jar"/>
<jar href="lib/swing-worker-1.1.jar"/>
<jar href="lib/sqljdbc4.jar"/>
</resources>
<application-desc main-class="validationApp.TestValidationApp" />
</jnlp>Ahh.. and now I see it formatted, I note you have raised the minimum Java to 1.6, yet still include the swing-worker-1.1.jar. It would seem unnecessary.
What is the output of ?..
prompt> jar -tf appframework-1.0.3.jar