Runtime Exception: WorldWindowGLAutoDrawable

rogene · 07-24-2007, 08:16 PM

Hello,

I am looking for some hints as to the source of this applet runtime error ---

<html>
<applet code=DemoApplet.class
archive="DemoApplet.jar, worldwind.jar, gluegen-rt.jar, jogl.jar"
</applet>
</html>

Code:

gov.nasa.worldwind.WWRuntimeException: Unable to create WorldWindow
	at gov.nasa.worldwind.awt.WorldWindowGLJPanel.<init>(Unknown Source)
	at DemoApplet.createWindow(DemoApplet.java:25)
	at DemoApplet.init(DemoApplet.java:37)
	at sun.applet.AppletPanel.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NullPointerException
	at javax.media.opengl.GLJPanel.setAutoSwapBufferMode(GLJPanel.java:812)
	at gov.nasa.worldwind.WorldWindowGLAutoDrawable.<init>(Unknown Source)
	... 5 more
gov.nasa.worldwind.WWRuntimeException: Unable to create WorldWindow
	at gov.nasa.worldwind.awt.WorldWindowGLJPanel.<init>(Unknown Source)
	at DemoApplet.createWindow(DemoApplet.java:25)
	at DemoApplet.init(DemoApplet.java:37)
	at sun.applet.AppletPanel.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NullPointerException
	at javax.media.opengl.GLJPanel.setAutoSwapBufferMode(GLJPanel.java:812)
	at gov.nasa.worldwind.WorldWindowGLAutoDrawable.<init>(Unknown Source)
	... 5 more

Thanks!

toolshed · 07-25-2007, 12:44 AM

Quote:

Originally Posted by rogene

Code:

gov.nasa.worldwind.WWRuntimeException: Unable to create WorldWindow
	at gov.nasa.worldwind.awt.WorldWindowGLJPanel.<init>(Unknown Source)

Look here

patmurris · 07-25-2007, 01:21 AM

Do you have jogl in the classpath for the applet ?

rogene · 07-25-2007, 01:51 AM

Thanks!

I changed the applet tag as such:

Code:

<applet code="com.sun.opengl.util.JOGLAppletLauncher"
		width=800
		height=600

		codebase="file:\\C:\Users\rogene\Desktop\runme\"

		archive="jogl.jar,gluegen-rt.jar,worldwind.jar,BasicDemo.jar,DemoApplet.jar">
	<param name="subapplet.classname" VALUE="DemoApplet">
	<param name="subapplet.displayname" VALUE="WorldWind">
	<param name="progressbar" value="true">
	<param name="cache_archive" VALUE="jogl.jar,gluegen-rt.jar,worldwind.jar,BasicDemo.jar,DemoApplet.jar">
	<param name="cache_archive_ex" VALUE="jogl.jar;preload,gluegen-rt.jar;preload,worldwind.jar;preload,BasicDemo.jar;preload,DemoApplet.jar;preload">
</applet>

And the runtime error goes away. However, I think that I must have an error in the codebase because the error now is that the DemoApplet class isn't found.

I have tried several variations on the codebase definition based on what I saw others post. I am debugging from a folder off the desktop, rather than on a webserver. I just started digging around on the Sun site to see if I could find some additional pointers, as this now appears to be a Java issue, rather than a Worldwind issue.

I am *not* running this on a Mac, which was related to a problem that another ww poster described.

rogene · 07-25-2007, 03:09 AM

I have tried using
codebase = "."
as well as deleting the reference to it completely

pred · 07-25-2007, 09:44 AM

Code:

<param name="subapplet.classname" VALUE="DemoApplet">

Is your DemoApplet class in a java package ?
type exemplepackage.DemoApplet if so.

patmurris · 07-25-2007, 11:19 AM

Sun recommend using the new JNLPAppletLauncher instead of JOGLAppletLauncher.
One of the main advantages is you dont need to host copies of all versions of jogl and gluegen. You can point to Sun servers. Same for the launcher itself.
https://applet-launcher.dev.java.net/

pred · 07-25-2007, 01:03 PM

Quote:

Originally Posted by patmurris

Sun recommend using the new JNLPAppletLauncher instead of JOGLAppletLauncher.
One of the main advantages is you dont need to host copies of all versions of jogl and gluegen. You can point to Sun servers. Same for the launcher itself.
https://applet-launcher.dev.java.net/

JNLP Launcher seems better for those who don't develop on some platform like me because there is a serious issue with JNLP core. JNLP applet tag parser seems not understand xml standard declaration like this :

Code:

<applet ....>
<param />
<param />
</applet>

JSP 2.0 or later can't understand old HTML tag and throws a fatal error, JNLP only understand old HTML tag and crash on xml standard ...

pred · 07-25-2007, 01:10 PM

To force creation of wwd, use WorldWindGLCanvas instead of WorldWindGLJPanel, the second one seems not working at all.

rogene · 07-25-2007, 06:30 PM

Thanks for the great ideas!

1) Use Canvas instead of JPanel
Will this be a problem if I am using JApplet? I had planned to use Swing components. Any issues mixing heavyweight and lightweight components, i.e. can I add the Canvas directly to my contentPane?

2) Use full package name in the subapplet.classname value
I am not using a package at this time. Should I be?

3) Use the new JNLPAppletLauncher instead of JOGLAppletLauncher
I am just learning about this now. I spent some time on SUN's forums but each page was S-L-O-W and I could never get the site to allow me to post a message. Many of the messages have been sitting out there without reply for quite a while. There is a forum at javagaming.org that is on a fast(er) server and has an active community.

Have any of you used the JNLP version of the AppletLauncher? I am running on two platforms - my quick debugs are on Windows Vista and my dev web server is 64-bit Linux with Apache and Tomcat.

Thanks so much!

07-25-2007, 01:21 AM	#3
patmurris WWJ Consultant Join Date: Jun 2005 Location: Saint-Paul de Vence, Alpes Maritimes, France Posts: 3,412	Do you have jogl in the classpath for the applet ? __________________ My World Wind Java Blog & WW.net Plugins page

07-25-2007, 01:51 AM	#4
rogene Scientist and Entrepreneur Join Date: May 2007 Location: Washington State, USA Posts: 75	class not found Thanks! I changed the applet tag as such: Code: <applet code="com.sun.opengl.util.JOGLAppletLauncher" width=800 height=600 codebase="file:\\C:\Users\rogene\Desktop\runme\" archive="jogl.jar,gluegen-rt.jar,worldwind.jar,BasicDemo.jar,DemoApplet.jar"> <param name="subapplet.classname" VALUE="DemoApplet"> <param name="subapplet.displayname" VALUE="WorldWind"> <param name="progressbar" value="true"> <param name="cache_archive" VALUE="jogl.jar,gluegen-rt.jar,worldwind.jar,BasicDemo.jar,DemoApplet.jar"> <param name="cache_archive_ex" VALUE="jogl.jar;preload,gluegen-rt.jar;preload,worldwind.jar;preload,BasicDemo.jar;preload,DemoApplet.jar;preload"> </applet> And the runtime error goes away. However, I think that I must have an error in the codebase because the error now is that the DemoApplet class isn't found. I have tried several variations on the codebase definition based on what I saw others post. I am debugging from a folder off the desktop, rather than on a webserver. I just started digging around on the Sun site to see if I could find some additional pointers, as this now appears to be a Java issue, rather than a Worldwind issue. I am not running this on a Mac, which was related to a problem that another ww poster described.

07-25-2007, 03:09 AM	#5
rogene Scientist and Entrepreneur Join Date: May 2007 Location: Washington State, USA Posts: 75	by the way... I have tried using codebase = "." as well as deleting the reference to it completely

07-25-2007, 09:44 AM	#6
pred Member Join Date: May 2007 Posts: 57	Code: <param name="subapplet.classname" VALUE="DemoApplet"> Is your DemoApplet class in a java package ? type exemplepackage.DemoApplet if so. __________________ -Stephane Maldini- Thales Alenia Space, GMES program, Toulouse, France-

07-25-2007, 11:19 AM	#7
patmurris WWJ Consultant Join Date: Jun 2005 Location: Saint-Paul de Vence, Alpes Maritimes, France Posts: 3,412	Sun recommend using the new JNLPAppletLauncher instead of JOGLAppletLauncher. One of the main advantages is you dont need to host copies of all versions of jogl and gluegen. You can point to Sun servers. Same for the launcher itself. https://applet-launcher.dev.java.net/ __________________ My World Wind Java Blog & WW.net Plugins page

07-25-2007, 01:10 PM	#9
pred Member Join Date: May 2007 Posts: 57	To force creation of wwd, use WorldWindGLCanvas instead of WorldWindGLJPanel, the second one seems not working at all. __________________ -Stephane Maldini- Thales Alenia Space, GMES program, Toulouse, France-

07-25-2007, 06:30 PM	#10
rogene Scientist and Entrepreneur Join Date: May 2007 Location: Washington State, USA Posts: 75	3 suggestions Thanks for the great ideas! 1) Use Canvas instead of JPanel Will this be a problem if I am using JApplet? I had planned to use Swing components. Any issues mixing heavyweight and lightweight components, i.e. can I add the Canvas directly to my contentPane? 2) Use full package name in the subapplet.classname value I am not using a package at this time. Should I be? 3) Use the new JNLPAppletLauncher instead of JOGLAppletLauncher I am just learning about this now. I spent some time on SUN's forums but each page was S-L-O-W and I could never get the site to allow me to post a message. Many of the messages have been sitting out there without reply for quite a while. There is a forum at javagaming.org that is on a fast(er) server and has an active community. Have any of you used the JNLP version of the AppletLauncher? I am running on two platforms - my quick debugs are on Windows Vista and my dev web server is 64-bit Linux with Apache and Tomcat. Thanks so much!

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