Java Web Start crashes with a Null Pointer Exception

[Darren Albers]

When I run javaws provided by open jdk it crashes with (I can only see this error in the console):
Exception in thread "main" java.lang.NullPointerException
 at net.sourceforge.jnlp.runtime.InstallDialog.<init>(InstallDialog.java:58)
 at net.sourceforge.jnlp.runtime.InstallDialog.getInstallDir(InstallDialog.java:153)
 at net.sourceforge.jnlp.runtime.JNLPRuntime.getDefaultBaseDir(JNLPRuntime.java:265)
 at net.sourceforge.jnlp.runtime.Boot.getBaseDir(Boot.java:407)
 at net.sourceforge.jnlp.runtime.Boot.run(Boot.java:168)
 at java.security.AccessController.doPrivileged(Native Method)
 at net.sourceforge.jnlp.runtime.Boot.main(Boot.java:159)

The link in the menu which opens the viewer works ok.

I tried just running javaws as well point it towards a few webstart apps and the result is the same.

[Darren Albers (dalbers)]

I see that a new version is building right now so I will retest with that version.

[Darren Albers (dalbers)]

I receive the same error with the new version as well

[R. Kyle Murphy (orclev)]

Also receiving the same error with the latest versions downloaded from Synaptic. This was downloaded from the universe repository.

[Matti Lindell (mlind)]

running /usr/lib/jvm/java-6-openjdk/bin/javaws from command line results same outcome.

InstallDialog.java line 58:
   new ImageIcon(getClass().getClassLoader().getResource("net/sourceforge/jnlp/resources/install.png"));

getClassLoader() may return null (if class was loaded by bootstrap class loader) or install.png is not found for some reason in /usr/lib/jvm/java-6-openjdk/jre/lib/resources.jar.

[Michael (michaeljt)]

"Me too".

Running Hardy Beta on AMD64. "net/sourceforge/jnlp/resources/install.png" does seem to be present inside /usr/lib/jvm/java-6-openjdk/jre/lib/resources.jar.

[Matthias Klose (doko)]

running `javaws -viewer' from the command line does work, however the manpage states that this should be the default if an URL is missing on the command line.

[Matthias Klose (doko)]

javaws from sun-java6-jdk called without arguments just shows a help message and terminates. related?

[Darren Albers (dalbers)]

Correct, I get the viewer which seems to be a place to manager certificates but I can't seem to load any webstart apps:

darren@dpa-mini:~$ javaws http://java.sun.com/products/javawebstart/apps/notepad.jnlp
Exception in thread "main" java.lang.NullPointerException
 at net.sourceforge.jnlp.runtime.InstallDialog.<init>(InstallDialog.java:58)
 at net.sourceforge.jnlp.runtime.InstallDialog.getInstallDir(InstallDialog.java:153)
 at net.sourceforge.jnlp.runtime.JNLPRuntime.getDefaultBaseDir(JNLPRuntime.java:265)
 at net.sourceforge.jnlp.runtime.Boot.getBaseDir(Boot.java:407)
 at net.sourceforge.jnlp.runtime.Boot.run(Boot.java:168)
 at java.security.AccessController.doPrivileged(Native Method)
 at net.sourceforge.jnlp.runtime.Boot.main(Boot.java:159)

Maybe I am confused on the usage or how to launch webstart apps via javaws?

[Dave Rolsky (autarch)]

I'm seeing the same behavior with the latest version of the package, installed just now - 6b08-0ubuntu1

autarch@houseabsolute:~$ javaws http://files.gokgs.com/javaBin/cgoban.jnlp

Exception in thread "main" java.lang.NullPointerException
        at net.sourceforge.jnlp.runtime.InstallDialog.<init>(InstallDialog.java:58)
        at net.sourceforge.jnlp.runtime.InstallDialog.getInstallDir(InstallDialog.java:153)
        at net.sourceforge.jnlp.runtime.JNLPRuntime.getDefaultBaseDir(JNLPRuntime.java:265)
        at net.sourceforge.jnlp.runtime.Boot.getBaseDir(Boot.java:407)
        at net.sourceforge.jnlp.runtime.Boot.run(Boot.java:168)
        at java.security.AccessController.doPrivileged(Native Method)
        at net.sourceforge.jnlp.runtime.Boot.main(Boot.java:159)

I'm running Hardy on an AMD64 system.

[Craig (candrews-integralblue)]

I filed an issue with sun, it's review id 1219421. I'll post the actual bug number and a link to it when that's been created.

[Launchpad Janitor (janitor)]

This bug was fixed in the package openjdk-6 - 6b08-0ubuntu3

---------------
openjdk-6 (6b08-0ubuntu3) hardy; urgency=low

  * Update IcedTea build infrastructure (pull before update ...).
    - Fixes crash starting javaws (Joshua Sumali). LP: #205371.

 -- Matthias Klose <email address hidden> Thu, 03 Apr 2008 17:13:20 +0200

[Michael (michaeljt)]

The link /usr/lib/jvm/java-6-openjdk/bin/javaws which points to ../jre/bin/javaws and which is used by konqueror to start javaws applications still doesn't work here. Executing

$ kioexec /usr/lib/jvm/java-6-openjdk/bin/javaws http://bugster.central/bugster.jnlp

gives me

exec: 6: ../jre/bin/javaws.real: not found

[Paul Smith (psmith-gnu)]

Hi Michael; please don't report different bugs in the comments for other bugs. It's very difficult to track them and determine when a bug is actually fixed, if extra bugs are reported in the comments. Every different bug should have its own bug report.

FWIW, I already filed the issue you're running into as a separate bug yesterday: https://bugs.launchpad.net/ubuntu/+source/openjdk-6/+bug/211515

Cheers!

[fringd (fringd)]

i'm still getting this problem with openjdk-6-jre 6b09. notepad somebody else linked does work, but

<code>
javaws http://files.gokgs.com/javaBin/cgoban.jnlp
netx: Launch Error: Could not launch JNLP file. (java.lang.NullPointerException null)
</code>