Morqs daily noob issue #2: Why doesn't webstart start? /solved/

Troubleshooting General Help
1

So I do realize that this doesn't really fit this board, but oh well, you guys are only one I can ask for help atm :frowning:

So, I've build my jnlp file:



<?xml version="1.0" encoding="utf-8"?>
<jnlp spec="1.0+"
codebase="file:///C:/Lumena/to_sign/" href="main.jnlp"
>

  <information>
    <title>Title</title>
    <vendor>your name</vendor>
    <description>Description</description>
    <description kind="short">short desc</description>
    <offline-allowed/>
  </information>
  <security>
      <all-permissions/>
  </security>
  <resources>
    <jar href="Praca.jar"/>
    <jar href="jme.jar" />
    <jar href="jme-model.jar" />
    <jar href="jme-awt.jar" />
    <jar href="jme-scene.jar" />
    <jar href="lwjgl.jar" />
    <jar href="jogg-0.0.7.jar" />
    <jar href="jorbis-0.0.15.jar" />
  </resources>
 
  <resources os="Windows">
     <j2se version="1.5+"/>
    <nativelib href="windows-native.jar"/>
  </resources>
  <resources os="Mac OS">
    <j2se version="1.5+"/>
    <nativelib href="macos-native.jar"/>
  </resources>
  <resources os="Linux" arch="i386">
    <j2se version="1.5+"/>
    <nativelib href="linux-native.jar"/>
  </resources>
  <application-desc main-class="praca.Main"/>
  <component-desc/>
</jnlp>



Everything  loads, no error messages or anything, after everything gets loaded, nothing else happens, application seems to shut down at once.

Any idea what am I doing wrong? Or what can be cause of it happening? Or how to view errors?
2

there is an error message probably, but you don't see it, because the java console, doesn't stay open.

In your java control panel (start -> controlpanel-> java) make sure to enable tracing and logging whatever it is called.



Then you can see the java logfiles in:

C:Documents and Settings<name>Application DataSunJavaDeploymentlog

3

Thanks for your reply :slight_smile:

Yeh I found log file earlier but have no idea what to do with it, again, file compiles perfectly and runs under netbeans.



Here's log file:



Java Plug-in 1.5.0_06
Using JRE version 1.5.0_06 Java HotSpot(TM) Client VM
User home directory = C:Documents and SettingsManiek

c:   clear console window
f:   finalize objects on finalization queue
g:   garbage collect
h:   display this help message
l:   dump classloader list
m:   print memory usage
o:   trigger logging
p:   reload proxy configuration
q:   hide console
r:   reload policy configuration
s:   dump system and deployment properties
t:   dump thread list
v:   dump thread stack
x:   clear classloader cache
0-5: set trace level to <n>

java.lang.NullPointerException
   at sun.plugin.util.GrayBoxPainter.showLoadingError(Unknown Source)
   at sun.plugin.AppletViewer.showAppletStatus(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)
Exception in thread "Thread-11" java.lang.NullPointerException
   at sun.plugin.util.GrayBoxPainter.showLoadingError(Unknown Source)
   at sun.plugin.AppletViewer.showAppletException(Unknown Source)
   at sun.applet.AppletPanel.runLoader(Unknown Source)
   at sun.applet.AppletPanel.run(Unknown Source)
   at java.lang.Thread.run(Unknown Source)
java.lang.NullPointerException
   at sun.plugin.util.GrayBoxPainter.showLoadingError(Unknown Source)
   at sun.plugin.AppletViewer.showAppletStatus(Unknown Source)
   at sun.applet.AppletPanel.run(Unknown Source)
   at java.lang.Thread.run(Unknown Source)
Exception in thread "thread applet-null" java.lang.NullPointerException
   at sun.plugin.util.GrayBoxPainter.showLoadingError(Unknown Source)
   at sun.plugin.AppletViewer.showAppletException(Unknown Source)
   at sun.applet.AppletPanel.run(Unknown Source)
   at java.lang.Thread.run(Unknown Source)

4

i don't know what could cause this Null pointer exception, i would try to debug it in the applet viewer and see which object/reference is null.



maybe some initialization is missing or faulty ?

5

I do wonder however, it seems to be connected with applets… but my application is not applet at all :o

6

hehe doh, right your want a webstart, maybe your .jnlp file extension is somehow connected to the appletviewer.



try to call explicitly call "javaws.exe main.jnlp"

7

Okay I'm stupid, think I know how to fix it, will post later.

EDIT

So! I've found what was wrong before, but encountered another error. When running jar, everything works, ok, however when I try to run webstart (same as above), I'm getting following error now:


java.lang.LinkageError: Version mismatch: jar version is '12', native libary version is '11'
   at org.lwjgl.Sys.&lt;clinit&gt;(Sys.java:105)
   at org.lwjgl.opengl.Display.&lt;clinit&gt;(Display.java:111)
   at com.jme.system.lwjgl.LWJGLPropertiesDialog.&lt;init&gt;(Unknown Source)
   at com.jme.app.AbstractGame.getAttributes(Unknown Source)
   at com.jme.app.BaseGame.start(Unknown Source)
   at praca.Main.main(Main.java:238)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
   at java.lang.reflect.Method.invoke(Unknown Source)
   at com.sun.javaws.Launcher.executeApplication(Unknown Source)
   at com.sun.javaws.Launcher.executeMainClass(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)


What may be the reason?

EDIT_2
Sigh! Captain Obvious strikes again, my jnlp was pointing at other folder in which I had other version of lwjgl -.-
Thanks a lot for your help Core-Dump :)