firefox blocks java

[thufir]

I'm running an old system, and plan a clean-install.  In the meantime, my 
JVM is so out of date, apparently, I can't play yahoo games.  I have a 
slow internet connection so don't want to upgrade everything under the 
"sun" (haha, I crack me up), but did go ahead and download the latest 
Oracle tar.gz (which seems to come with some string attached?):

jdk-7u45-linux-i586.tar.gz

however, I mean I already have Java 7 installed according to this:


thufir at dur:~/Downloads$ 
thufir at dur:~/Downloads$ sudo apt-get install openjdk-7-jdk
Reading package lists... Done
Building dependency tree       
Reading state information... Done
openjdk-7-jdk is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.
thufir at dur:~/Downloads$ 
thufir at dur:~/Downloads$ sudo apt-get install openjdk-7-jdk
Reading package lists... Done
Building dependency tree       
Reading state information... Done
openjdk-7-jdk is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.
thufir at dur:~/Downloads$ 
thufir at dur:~/Downloads$ ll /usr/lib/jvm/
total 92
drwxr-xr-x   8 root root  4096 Aug 27 10:51 ./
drwxr-xr-x 242 root root 49152 Dec  8 01:23 ../
drwxr-xr-x   4 root root  4096 Aug 26 15:20 java-1.5.0-gcj-4.6/
lrwxrwxrwx   1 root root    19 Apr 12  2012 java-1.6.0-openjdk-i386 -> 
java-6-openjdk-i386/
-rw-r--r--   1 root root  2345 Apr 12  2012 .java-1.6.0-openjdk-i386.jinfo
lrwxrwxrwx   1 root root    19 Apr 13  2012 java-1.7.0-openjdk-i386 -> 
java-7-openjdk-i386/
-rw-r--r--   1 root root  2345 Apr 13  2012 .java-1.7.0-openjdk-i386.jinfo
drwxr-xr-x   3 root root  4096 Aug 15 04:54 java-6-openjdk-common/
drwxr-xr-x   7 root root  4096 Aug 26 15:21 java-6-openjdk-i386/
drwxr-xr-x   3 root root  4096 Aug 27 02:14 java-7-openjdk-common/
drwxr-xr-x   7 root root  4096 Aug 27 02:14 java-7-openjdk-i386/
drwxr-xr-x   8 root root  4096 Aug 27 10:51 java-7-oracle/
-rw-r--r--   1 root root  2542 Aug 27 10:51 .java-7-oracle.jinfo
thufir at dur:~/Downloads$ 
thufir at dur:~/Downloads$ cat /etc/lsb-release 
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=12.04
DISTRIB_CODENAME=precise
DISTRIB_DESCRIPTION="Ubuntu 12.04.2 LTS"
thufir at dur:~/Downloads$ 
thufir at dur:~/Downloads$ 


I find it odd that there are all these different java versions.  Should I 
complete the directions on askubuntu:

http://askubuntu.com/a/55960/45156


It just seems like a hassle.  But, this answer is up to date for the 
procedure?  I already have a /usr/lib/jvm/jdk1.7.0 as well as java-7-
oracle.  Overwrite jdk1.7.0???


thanks,

Thufir