As ubuntu droped the oracle jdk support from 12.04 fully, you may face some performance and stability problem with the open jdk. Here is the simple 3 line tricks to get the oracle/sun jdk in 12.04
sudo add-apt-repository ppa:flexiondotorg/java
sudo apt-get update
sudo apt-get install sun-java6-jdk sun-java6-plugin
You may see few key warning. Just ignore those, it’s the PPA’s small issue. but the jdk will work great.
Please let us know if you face any problem
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I get this message..
The following packages have unmet dependencies:
sun-java6-jdk:i386 : Depends: sun-java6-bin:i386 (>= 6.30-2~precise1) but it is not going to be installed
sun-java6-plugin:i386 : Depends: sun-java6-bin:i386 (>= 6.30-2~precise1) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
I also get the message :
The following packages have unmet dependencies:
sun-java6-jdk:i386 : Depends: sun-java6-bin:i386 (>= 6.30-2~precise1) but it is not going to be installed
sun-java6-plugin:i386 : Depends: sun-java6-bin:i386 (>= 6.30-2~precise1) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
These errors are being generated because there is not a 64bit copy of the sun-java6-jdk availible from the repository.
As an alternative – you can install the version of java from the Oneiric repository and then install the most recent Java binaries from Sun.
thanks was helpful
sara
I get this message …
You are about to add the following PPA to your system:
tag:launchpad.net:2008:redacted
More info: https://launchpad.net/~flexiondotorg/+archive/java
Press [ENTER] to continue or ctrl-c to cancel adding it
Exception in thread Thread-1:
Traceback (most recent call last):
File “/usr/lib/python2.7/threading.py”, line 551, in __bootstrap_inner
self.run()
File “/usr/lib/python2.7/dist-packages/softwareproperties/ppa.py”, line 95, in run
self.add_ppa_signing_key(self.ppa_path)
File “/usr/lib/python2.7/dist-packages/softwareproperties/ppa.py”, line 107, in add_ppa_signing_key
print “Error reading %s: %s” % (lp_url, e[1])
NameError: global name ‘lp_url’ is not defined
i got this message:
GPG error: http://ppa.launchpad.net precise Release: The following signatures couldn’t be verified because the public key is not available: NO_PUBKEY 2EA8F35793D8809A
it’s working!!.. bt don’t hw does that relate to ppa issue. cn u plz explain?