Seamonkey plugins - java not working

Question

I'm wanting to use gotomypc.com. When I log into the site and attempt to connect to one of my computers that has gotomypc on it, it shows a screen saying I need to update a plugin. When I click that it tells me java runtime environment is needed. When I tell it to go ahead it fails, "no plugins were installed", and suggests a manual install.
I looked at the manual install site and found it unhelpful; nothing seemed to match up with where they say the java plugin is supposed to go, etc.
I looked to see what was installed and found this:
[root@myhost paul]# pacman -Qs icedtea
local/jre7-openjdk 7.u21_2.3.9-4
Free Java environment based on OpenJDK 7.0 with IcedTea7 replacing binary
plugs - Full Java runtime environment - needed for executing Java GUI and
Webstart programs
local/jre7-openjdk-headless 7.u21_2.3.9-4
Free Java environment based on OpenJDK 7.0 with IcedTea7 replacing binary
plugs - Minimal Java runtime - needed for executing non GUI Java programs
[root@myhost paul]#
Not sure why the headless one is there. Anyway it looks like I am already up to date with java.
However when I go Help>About plugins in Seamonkey it doesn't show java. I don't know how to enable java, assuming I already have it; I don't see it in the preferences.
Also, this page:
http://plugindoc.mozdev.org/linux-amd64.html
...suggests I should have a file called libnpjp2.so, but I did not find it with the "find" command. This seems strange since I have IcedTea.

Answer 1

Pacman disagrees, as far as I can tell. Maybe I'm not understanding your comment.
There is this note in the jre wiki:
Note: After installation, the Java environment will need recognized by the shell ($PATH variable and $JAVA_HOME). This can be done from the command line by sourcing /etc/profile, and for Desktop Environments it is likely a logout/login will be necessary.
I looked at the shell variables:
[paul@myhost ~]$ echo $JAVA_HOME
/usr/lib/jvm/java-7-openjdk/jre
[paul@myhost ~]$ echo $PATH
/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin:/usr/bin/vendor_perl:/usr/bin/core_perl
So the JAVA_HOME is properly defined and there is stuff in that directory, but PATH does not point at anything in jre. Maybe that is the problem? What exactly should it point at down there? Maybe /usr/lib/jvm/java-7-openjdk/jre/bin? I will try that.
<later>
Um, I'm not sure the best way to do that. I can just tack that thing on the end of the PATH statement in /etc/profile but it doesn't seem clean. Shouldn't PATH be updated in cat /etc/profile.d/jre.sh and cat /etc/profile.d/jre.csh? I wonder why it was not already set there.
Last edited by PaulBx1 (2013-06-04 13:00:00)