Comments on: Ubuntu Linux Install Sun Java Development Kit ( JDK ) and Java Runtime Environment ( JRE )

By: Scott

Scott — Sun, 21 Mar 2010 16:05:46 +0000

You can download the Sun JDK from http://java.sun.com.

Once downloaded, set it executable, expand it and copy it to your desired directory. I put mine in /opt. I have /opt/jdk1.6.0_18 now.

Next I created a symbolic link for convenience using sudo ln -s /opt/jdk1.6.0_18 /opt/java

In your home directory, create or edit a file called .bash_profile (the “.” (dot) is important) and add the following:
JAVA_HOME=/opt/java export JAVA_HOME PATH=/opt/java/bin:$PATH

Log out and back in to set the environment variables or alternatively you can:
source ~/.bash_profile

Once done you should be able to type “java -version” and see
java version "1.6.0_18" Java(TM) SE Runtime Environment (build 1.6.0_18-b07) Java HotSpot(TM) 64-Bit Server VM (build 16.0-b13, mixed mode)

If you don’t it is probably a type somewhere. The commands can help troubleshoot problems.
which java to see which executable you are calling.
echo $PATH will allow you to check your path variable.
echo $JAVA_HOME shows your java home environment variable

Good Luck,
-Scott

By: jatin

jatin — Fri, 19 Mar 2010 19:18:24 +0000

when i used this command in terminal $ sudo apt-get install sun-java6-bin sun-java6-jre sun-java6-jdk ia getting error as
E: Couldn’t find package sun-java6-bin
i am new to ubuntu can any one help me out

By: Marcos

Marcos — Sat, 13 Mar 2010 00:16:14 +0000

Thanks, Very good Tutorial!

By: jessi

jessi — Fri, 12 Mar 2010 17:47:10 +0000

By: Imran Lakhani

Imran Lakhani — Mon, 08 Mar 2010 10:22:36 +0000

thanks man,
quite helpful :)

By: suhas

suhas — Sat, 06 Mar 2010 13:31:06 +0000

@jhang, for your earlier problem try sudo apt-get update.
then to play audio/videos u need to install players.
for tht u can try sudo apt-get install vlc mplayer gmplayer

By: Russell

Russell — Wed, 03 Mar 2010 16:13:40 +0000

Thank you, Vivek. As a newbie to Ubuntu, installing and configuring the individual components has been very frustrating to learn. Your post was clear and precise, allowing me to get java up and running (after numerous failed attempts).

- Russell

By: shiplu

shiplu — Fri, 26 Feb 2010 23:35:28 +0000

after installing jdk and jre
next instruction are not working properly in my ubuntu(9.04)
please help …..

By: jhang

jhang — Wed, 17 Feb 2010 06:47:57 +0000

i could not play my videos and music on my ubuntu.. what’s the better way to enable me to do so????

By: Spaulding Smails

Spaulding Smails — Fri, 12 Feb 2010 10:02:10 +0000

@ jhang

Try sudo apt-get install default-jdk. This installed the open jdk which is (afaik) just sun java with a friendlier foss license.