Where should i set the environment variable for java in ubuntu？

Asked Dec 16 '14 at 16:05

Active Dec 16 '14 at 16:05

Viewed 53 times

when i wanta set the environment variable for java: someone said "~/.bashrc" and someone else said "/etc/profile" or "~/.profile"

i wanta know what different from these files?

And why the commod is "export PATH=$JAVA_HOME/bin:$PATH" but "export PATH=$JAVA_HOME/bin"

asked Dec 16 '14 at 16:05

BossChow

You don't need any environment variable for Java in Ubuntu. I don't have any neither I had to set it up ever. – m0skit0 Dec 16 '14 at 16:08
1

As for the second part, `export PATH=$JAVA_HOME/bin:$PATH` makes sure that you don't loose what's already in the `PATH` variable. The second form would be overwriting `PATH`. – Stefano Sanfilippo Dec 16 '14 at 16:08
@m0skit0 beacause you are using the packaged JDK/JRE. If you want to use a custom one from a tarball, like Oracle JDK 1.8, then you will have it. – Stefano Sanfilippo Dec 16 '14 at 16:09
@StefanoSanfilippo Oracle JDK's have Ubuntu-compatible packages as well. Just saying. – m0skit0 Dec 16 '14 at 16:10
_"If you want to use a custom one **from a tarball**"_ – Stefano Sanfilippo Dec 16 '14 at 16:11
[see this](http://opensourceforgeeks.blogspot.in/2014/07/how-to-permanently-set-path-on-linux.html) might help. – Aniket Thakur Dec 16 '14 at 16:15

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