Ubuntu 10.04 : Install and set Sun JDK as default

Since ubuntu 10.04, Sun JDK has been dropped and replaced by openjdk.
Literally replaced, ie : Sun JDK remove, openjdk installed.

This is performed during the upgrade without explicitly asking you for your consent...
which is quite ugly... After the upgrade, my tomcat was not working anymore...

Anyway, in order to install Sun JDK back you just have to :
vi /etc/apt/sources.list
and check if the following line is present :
deb http://archive.canonical.com/ lucid partner
if not, add it at the end of the file.
then run
sudo aptitude update

to get the package list from the new repo.
and then run :
sudo aptitude install sun-java6-jdk
but after that, if you run java -version, it's still the openjdk version.

thomas@daisybox:/usr/lib/jvm/java-6-sun$ java -version
java version "1.6.0_18"
OpenJDK Runtime Environment (IcedTea6 1.8) (6b18-1.8-0ubuntu1)
OpenJDK 64-Bit Server VM (build 14.0-b16, mixed mode)

thomas@daisybox:/usr/lib/jvm/java-6-sun$ which java
thomas@daisybox:/usr/lib/jvm/java-6-sun$ ll /usr/bin/java
lrwxrwxrwx 1 root root 22 2010-05-11 23:44 /usr/bin/java -> /etc/alternatives/java
thomas@daisybox:/usr/lib/jvm/java-6-sun$ ll /etc/alternatives/java
lrwxrwxrwx 1 root root 40 2010-05-11 23:44 /etc/alternatives/java -> /usr/lib/jvm/java-6-openjdk/jre/bin/java

You could try to remove openjdk, but you'll hit some annoying dependency issue.

Instead of removing you can configure the system to default to Sun JDK

thomas@daisybox:~$ sudo update-alternatives --config java
There are 2 choices for the alternative java (providing /usr/bin/java).

  Selection    Path                                      Priority   Status
* 0            /usr/lib/jvm/java-6-openjdk/jre/bin/java   1061      auto mode
  1            /usr/lib/jvm/java-6-openjdk/jre/bin/java   1061      manual mode
  2            /usr/lib/jvm/java-6-sun/jre/bin/java       63        manual mode

Press enter to keep the current choice[*], or type selection number: 2
update-alternatives: using /usr/lib/jvm/java-6-sun/jre/bin/java to provide /usr/bin/java (java) in manual mode.

thomas@daisybox:/usr/lib/jvm/java-6-sun$ ll /etc/alternatives/java
lrwxrwxrwx 1 root root 36 2010-05-11 23:48 /etc/alternatives/java -> /usr/lib/jvm/java-6-sun/jre/bin/java

thomas@daisybox:~$ java -version
java version "1.6.0_20"
Java(TM) SE Runtime Environment (build 1.6.0_20-b02)
Java HotSpot(TM) 64-Bit Server VM (build 16.3-b01, mixed mode)

Or more directly like "Daniel Bos" suggest in the comments :

sudo update-java-alternatives -s java-6-sun

image taken from : http://www.sucka.net/2010/04/jdk-linux-update-script/


Hashmat said…
Thanx, great post. You just made my Intellij run.
Zurvarian said…
Really thanks to you, that's works fine
Sam Liang said…
There is no sun-java6-jdk:

sudo aptitude install sun-java6-jdk

Reading package lists... Done
Building dependency tree
Reading state information... Done
Reading extended state information
Initializing package states... Done
No candidate version found for sun-java6-jdk
No candidate version found for sun-java6-jdk
No packages will be installed, upgraded, or removed.
0 packages upgraded, 0 newly installed, 0 to remove and 5 not upgraded.
Need to get 0B of archives. After unpacking 0B will be used.
Writing extended state information... Done
Reading package lists... Done
Building dependency tree
Reading state information... Done
Reading extended state information
Initializing package states... Done

I'm running UBuntu 10.04 LTS Lucid Lynx

Is there anything wrong?
Manson Thomas said…
Hi Sam,

edit your /etc/apt/souce.list and add at the bottom of the file the line :

deb http://archive.canonical.com/ lucid partner

(if it's not already there)


sudo aptitude update
sudo aptitude upgrade (you've got 5 un-upgraded package)
sudo aptitue install sun-java-jdk

I've check and this repo contains the sun jdk.

Manson Thomas said…
I've edited my post to add this information.

I guess I had the partner repo before this upgrade or I just forgot to mention the fact that I added it.
Sam Liang said…
Thanks Manson!

Just checked /etc/apt/sources.list, it has the following lines:

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu lucid partner
# deb-src http://archive.canonical.com/ubuntu lucid partner

I'll uncomment the line "deb http://archive.canonical.com/ubuntu lucid partner"
Unknown said…
Thanks man,
I installed android adt plug in for eclipse and was getting error:

parseSdkContent failed

when setting the source folder for the android sdk.

Figured it was open java.

I made sun java jdk default and everything works now.
Lizbee said…
any ideas how to make it work with Java 1.5 for some reason my tomcat still tries to serve my jsp's with 1.6
Manson Thomas said…
check your tomcat init script, the JAVA_HOME may be set there.

My init script
for :
service tomcat stop; service tomcat start)

# Tomcat auto-start
# description: Auto-starts tomcat
# processname: tomcat
# pidfile: /var/run/tomcat.pid

JAVA_HOME=/usr/lib/jvm/java-6-sun; export JAVA_HOME
JAVA_OPTS="-server -Xms512m -Xmx1024m -XX:MaxPermSize=512m -Dmail.mime.decodeparameters=true -Dorg.apache.jasper.runtime.BodyContentImpl.LIMIT_BUFFER=true -Dmail.mime.decodeparameters=true"; export JAVA_OPTS
CATALINA_HOME=/usr/local/tomcat; export CATALINA_HOME
CATALINA_BASE=/home/special/tomcat; export CATALINA_BASE

case $1 in
sh $CATALINA_HOME/bin/startup.sh
sh $CATALINA_HOME/bin/shutdown.sh
sh $CATALINA_HOME/bin/shutdown.sh
sh $CATALINA_HOME/bin/startup.sh
echo $"Usage: $0 {start|stop|restart}"
exit 1
exit 0
Thank you. I just did this with Ubuntu 10.10 (maverick instead of lucid). Works great and now I can also use IntelliJ.
Unknown said…
I'd suggest using:

sudo update-java-alternatives -s java-6-sun
Anonymous said…
Thanks! This saved me a lot of time!
Mohammad Razeef said…
Hi Tom,
I am using 11.04 and I have a problem running the command "sudo aptitude update". It says command not found. Did the command change in 11.04?
Manson Thomas said…
I've upgraded to 11.04 and it's still working...

If you get prompt a password while running "sudo aptitute update", that means that it's aptitude that is missing, you may need to install it (apt-get install aptitude)

if not, you may not be in the sudoers group...

I'll bet on the first option as sudo is a basic security feature of Ubuntu.
Manson Thomas said…
thomas@daisybox:~/Documents$ aptitude show aptitude
Package: aptitude
State: installed
Automatically installed: no
Version: 0.6.3-3.2ubuntu1
Priority: optional
Section: admin

>>>>Automatically installed: no

So I think it's the first option...

You can safely use "apt-get", aptitude is a frontend to apt-get.

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