Linux (Ubuntu) Java plugin and console

Question

I'm trying to test a Java applet in Firefox in Ubuntu 10.10. Unfortunately it doesn't work out of the box. I have two issues:

~~By default the IcedTea plugin was used, which I don't trust. I installed sun-java6-plugin but have no idea which one is used by Firefox (and other browsers) now. How can I make sure?~~ Fixed this by simply removing icedtea.
I have no console. It's usually accessible via a tray icon in Windows, but not here (~~maybe this will automatically be fixed by #1 though~~ No it wasn't). There's this addon but it doesn't work anymore. Update: I've sort of fixed this by going to the Java control panel and checking "Show Console" in the advanced tab, but now the console always pops up which isn't quite perfect yet.

I'm deploying the applet via JNLP. You can see it here, if it helps. I have sun-java6-jdk as the default Java.

(Sorry if this question belongs on SuperUser or another site, but I figured that with #2 especially this is a programming related question)

@org.life.java: Thanks, but that's what I already did (except with version 6 of course) — Bart van Heukelom
– Bart van Heukelom, Commented Dec 29, 2010 at 10:31
To install the correct JRE, you have to enable first the extra software sources in software-properties-gtk (run as sudo), second tab. Then you can find the official JRE in Synaptic. — Martijn Courteaux
– Martijn Courteaux, Commented Dec 29, 2010 at 12:04
@Martijn: The console always opens, for every applet. Even when I'm not interested in it, or for real world applets that I didn't make and am not trying to test. — Bart van Heukelom
– Bart van Heukelom, Commented Dec 29, 2010 at 12:52

tersmitten · Accepted Answer · 2010-12-29 12:09:36Z

1

With :

sudo update-alternatives --install "/usr/bin/java" "java" "/opt/java/64/jre1.6.0_20/bin/java" 1
sudo update-alternatives --set java /opt/java/64/jre1.6.0_20/bin/java

You can set the default jre (in this case a 64 bits one)

with:

java -version

you can see the version

With about:plugins you can see which jre firefox is using

answered Dec 29, 2010 at 12:09

tersmitten

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Dave Jarvis Over a year ago

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