HTML Java applets do not start when the JAR(s) pathname(s) contain accented letters

[Zoltán Kovács]

I downloaded a .zip file containing an HTML file and some JARs, and unzipped it into my Downloads
directory on a typical Linux system. Since I am a non-English user, my
"Downloads" directory contains accented letters ("Letöltések").

I use the icedtea-plugin package under Ubuntu 12.10. I tried both Java 6 and 7.

Here is what I have in Firefox or Google Chrome ("tail -f ~/.xsession-errors"):

java version "1.7.0_15"
OpenJDK Runtime Environment (IcedTea7 2.3.7) (7u15-2.3.7-0ubuntu1~12.10)
OpenJDK 64-Bit Server VM (build 23.7-b01, mixed mode)
JAR file:/home/kovzol/Letöltések/dl/geogebra.jar not found. Continuing.
JAR file:/home/kovzol/Letöltések/dl/geogebra.jar not found. Continuing.
JAR file:/home/kovzol/Letöltések/dl/geogebra_main.jar not found. Continuing.
JAR file:/home/kovzol/Letöltések/dl/geogebra_gui.jar not found. Continuing.
JAR file:/home/kovzol/Letöltések/dl/geogebra_cas.jar not found. Continuing.
JAR file:/home/kovzol/Letöltések/dl/geogebra_algos.jar not found. Continuing.
JAR file:/home/kovzol/Letöltések/dl/geogebra_export.jar not found.
Continuing.
JAR file:/home/kovzol/Letöltések/dl/geogebra_javascript.jar not found.
Continuing.
JAR file:/home/kovzol/Letöltések/dl/jlatexmath.jar not found. Continuing.
JAR file:/home/kovzol/Letöltések/dl/jlm_greek.jar not found. Continuing.
JAR file:/home/kovzol/Letöltések/dl/jlm_cyrillic.jar not found. Continuing.
JAR file:/home/kovzol/Letöltések/dl/geogebra_properties.jar not found.
Continuing.
netx: Initialization Error: Could not initialize applet.
(geogebra.GeoGebraApplet)
netx: Initialization Error: Could not initialize applet.
(geogebra.GeoGebraApplet)
net.sourceforge.jnlp.LaunchException: Fatal: Initialization Error: Could not
initialize applet.
    at net.sourceforge.jnlp.Launcher.createApplet(Launcher.java:735)
    at net.sourceforge.jnlp.Launcher.getApplet(Launcher.java:676)
    at net.sourceforge.jnlp.Launcher$TgThread.run(Launcher.java:886)
Caused by: java.lang.ClassNotFoundException: geogebra.GeoGebraApplet
    at
net.sourceforge.jnlp.runtime.JNLPClassLoader.loadClass(JNLPClassLoader.java:1609)
    at net.sourceforge.jnlp.Launcher.createApplet(Launcher.java:725)
    ... 2 more
java.lang.NullPointerException
    at net.sourceforge.jnlp.NetxPanel.runLoader(NetxPanel.java:154)
    at sun.applet.AppletPanel.run(AppletPanel.java:380)
    at java.lang.Thread.run(Thread.java:722)
java.lang.NullPointerException
    at sun.applet.AppletPanel.run(AppletPanel.java:430)
    at java.lang.Thread.run(Thread.java:722)

The applet will not start, and I have to kill the OpenJDK process manually
since the web page will not respond any longer.

I use Ubuntu 12.04.2 LTS and icedtea-plugin 1.2-2ubuntu1.3.