JAVA_HOME not working in ubuntu

Question

I am new to ubuntu. I am trying to use java-8. Where I have already installed java-6 in my ubuntu machine. I just want to use java-8 from my terminal (for test purpose); not from all over my machine. I want java-6 remains for all other software like eclipse. I heard to to so we can ubuntu terminal to export. So I am trying to do this -

$ export JAVA_HOME=/usr/lib/jvm/jdk8
$ export PATH=$PATH:$JAVA_HOME

after doing this when I type in terminal the fllowing command -

$ java -version

it gives -

java version "1.6.0_29" Java(TM) SE Runtime Environment (build 1.6.0_29-b11) Java HotSpot(TM) Server VM (build 20.4-b02, mixed mode)

I tried several ways but nothing is working for me.

Razib · Accepted Answer · 2015-07-28 19:17:15Z

6

I think you are missing the bin directory name after the $JAVA_HOME. Try this -

 $ export JAVA_HOME=/usr/lib/jvm/jdk8
 $ export PATH=$JAVA_HOME/bin:$PATH

Note: I have place the JAVA_HOME before PATH. That means the JAVA_HOME/bin is concatenated with the existing PATH where the JAVA_HOME/bin is placed at the beginning of the new PATH. If you place the JAVA_HOME/bin at the end of the current PATH then the JAVA_HOME/bin is concatenated at the end of the new PATH. In this case the older JAVA_HOME (if exist one, in your case the jdk-6) may found first at the new PATH variable and will get precedence. A lots of times I get wrong when I placed JAVA_HOME/bin at the end of the PATH. So add JAVA_HOME/bin at the beginning in this case.

edited Jul 28, 2015 at 19:17

answered Jul 28, 2015 at 18:24

Razib

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