Java Installation and Environment variable in Ubuntu

Question

I'm trying to install Java in Ubuntu 14.04. I had follow a guide (that was sent to me for a work for my thesis) and this is what I made:

sudo apt-get install python-software-properties
sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java7-installer

Now I have to change the environment variable and, according to the guide, this is the few steps remaining:

sudo update-alternatives --config java for get the environmnet variable path
$JAVA_HOME: sudo nano /etc/environment
JAVA_HOME=/usr/lib/jvm/java-7-oracle
source /etc/environment

the problem is that I'm not sure where I have to write "JAVA_HOME: bla bla". In the Ubuntu shell? And, at the end, source /etc/environment doesn't work.

You should also set your PATH variable as well. Check the profile file of your shell — TheLostMind
– TheLostMind, Commented Nov 12, 2015 at 15:21

fedorqui · Accepted Answer · 2015-11-12 15:21:54Z

1

You can set the JAVA_HOME variable in your ~/.bashrc file, probably the end of the file is the best place:

vi ~/.bashrc         # open the file and add the value
source ~/.bashrc     # source it
echo $JFHOME         # make sure it changed

Then, you may need to add this path into $PATH:

PATH=$PATH:$JAVA_HOME

answered Nov 12, 2015 at 15:21

fedorqui

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2 Comments

El_Merendero Over a year ago

when you write "add the value" you means only JAVA_HOME=/usr/lib/jvm/java-7-oracle (obviously at the end of the file)?

fedorqui Over a year ago

@Carlo check if echo $JAVA_HOME returns what you inserted.

lynnsea · Accepted Answer · 2015-11-12 15:58:17Z

0

vim /etc/profile
modify file ,add the two lines

JAVA_HOME=/usr/lib/jvm/java-7-oracle

PATH=$JAVA_HOME/bin:$PATH

source /etc/profile

make sure all the above has been done then run "java -version" see if it works or not.

answered Nov 12, 2015 at 15:58

lynnsea

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