How to set java home?

Question

Can any one tell me, how to set java home in Ubuntu 12.10?

score 7 · Answer 1 · edited Oct 09 '15 at 11:42

Open terminal by hitting Ctrl+Alt+T and execute following command:

gedit ~/.bashrc

Now go to end of file and add the following lines:

export JAVA_HOME=/path/to/jdk/folder
#usually /usr/java/jdk or /usr/lib/java/jdk
export PATH=$PATH:$JAVA_HOME/bin

Now in terminal type:

sudo source ~/.bashrc

This will make it appear on every terminal if open.

Now you can cross check it by typing following line in terminal

echo $PATH

It will show you path of your jdk at the end

For more information visit this link

Luca D'Amico · Answer 2 · 2013-04-05T14:14:32.493

2

Try This:

JAVA_HOME=/usr/lib/jvm/java
export JAVA_HOME
PATH=$PATH:$JAVA_HOME/bin
export PATH

This should work, but make sure to change /usr/lib/jvm/java with your java path.

edited Apr 05 '13 at 14:14

answered Apr 04 '13 at 11:48

Luca D'Amico

574

score 1 · Answer 3 · answered Apr 04 '13 at 11:46

Well that will be easy, just open terminal and do

For one user
```
gedit ~/.bash_profile
```
For all users
```
gedit /etc/profile
```

And just add line like this

export PATH=$PATH:/usr/java/jdk1.5.0_07/bin
export PATH=$PATH:/usr/java/jdk1.5.0_07/bin

Just make sure that path is right. And if you did it for all users you will need to activate it using

sudo source /etc/profile

Source: http://www.cyberciti.biz/faq/linux-unix-set-java_home-path-variable/

score 1 · Answer 4 · answered Aug 05 '14 at 06:14

1

To set JAVA_HOME for all users do as Follows:

sudo gedit /etc/environment
JAVA_HOME =":usr/lib/jvm/java-7-openjdk-amd64/bin" 
CLASSPATH =":usr/lib/jvm/java-7-openjdk-amd64/bin:/home/something etc whatever you want etc"( separated by semicolon )

answered Aug 05 '14 at 06:14

Serjik

398
4
12

score 0 · Answer 5 · edited Jan 07 '22 at 09:26

I installed Java 11 in Ubuntu 20.04 by setting JAVA_HOME for the same...

Check your Ubuntu version:

$ lsb_release -d
Description:    Ubuntu 20.04.3 LTS

find out the location of your jvm:

$ whereis jvm
jvm: /usr/lib/jvm

open .bashrc in any editor of your choice:

$ nano ~/.bashrc

add the following lines to it:

## setting JAVA_HOME
JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64
export JAVA_HOME
PATH=$PATH:$JAVA_HOME/bin
export PATH

now your JAVA_HOME is set.

Open a terminal and enter the command to confirm the setup:

$ echo $JAVA_HOME

This will output the same path you've set just now.

How to set java home?

5 Answers5