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Issue with Processing + Ubuntu 10.10 + OpenJDK Plugin

[1 Reply]
- 11-Oct-2010 07:40 AM
- Forum: Integration and Hardware
Hi,

I'm building a Processing-based applet.

Until now I've run it without any problem for at least one year (on firefox, google chrome, also on windows, linux..),

despite using it for hardcore use (heavy dual channel communication with javascript/liveconnect on all browsers, Java exception catched from the Javascript, on-the-fly resizing of the applet, loading of big files inside and so on..but it works, to the end)

But I've just upgraded my Ubuntu, and when starting Firefox on my applet, I got this message :

java version "1.6.0_20"

OpenJDK Runtime Environment (IcedTea6 1.9) (6b20-1.9-0ubuntu1)

OpenJDK 64-Bit Server VM (build 17.0-b16, mixed mode)

java.lang.NullPointerException

at sun.applet.PluginAppletViewer.handleMessage(PluginAppletViewer.java:649)

at sun.applet.PluginStreamHandler.handleMessage(PluginStreamHandler.java:270)

at sun.applet.PluginMessageHandlerWorker.run(PluginMessageHandlerWorker.java:82)

java.lang.RuntimeException: Failed to handle message: width 10 height 10 for instance 1

at sun.applet.PluginAppletViewer.handleMessage(PluginAppletViewer.java:660)

at sun.applet.PluginStreamHandler.handleMessage(PluginStreamHandler.java:270)

at sun.applet.PluginMessageHandlerWorker.run(PluginMessageHandlerWorker.java:82)

Caused by: java.lang.NullPointerException

at sun.applet.PluginAppletViewer.handleMessage(PluginAppletViewer.java:649)

... 2 more

java.lang.RuntimeException: You need to use "Import Library" to add processing.core.PGraphicsJava2D to your sketch.

at processing.core.PApplet.makeGraphics(Unknown Source)

at processing.core.PApplet.init(Unknown Source)

at sun.applet.AppletPanel.run(AppletPanel.java:436)

at java.lang.Thread.run(Thread.java:636)

Exception in thread "Thread-7" java.lang.NullPointerException

at sun.applet.AppletPanel.showAppletStatus(AppletPanel.java:947)

at sun.applet.AppletPanel.run(AppletPanel.java:607)

at java.lang.Thread.run(Thread.java:636)

java.lang.RuntimeException: You need to use "Import Library" to add processing.core.PGraphicsJava2D to your sketch.

at processing.core.PApplet.makeGraphics(Unknown Source)

at processing.core.PApplet.init(Unknown Source)

at sun.applet.AppletPanel.run(AppletPanel.java:436)

at java.lang.Thread.run(Thread.java:636)

I managed to go back to the old JDK using

sudo update-java-alternatives -s java-6-sun

And it works again.

But still, I'm a bit confused by the " You need to use 'Import Library' to add processing.core.PGraphicsJava2D to your sketch" message.. since I use P2D and not Java2D.

Do you know anything that may cause this kind of issue? maybe I could change something to make it work on OpenJDK too ?

Thanks in advance,

Julian

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