JAVA_HOME default in ubuntu

Question

I am using ubuntu 14.0.4... JAVA_HOME is always /usr/lib/jvm/java-7-oracle even though i uninstalled java...

I manually set /usr/lib/jvm/jdk1.8.0_71 in etc/environment . But $echo JAVA_HOME shows /usr/lib/jvm/java-7-oracle .

How to resolve this issue and how to use my jdk1.8.0_71 in JAVA_HOME .

Answer 1

Try edit ~/.profile .
Add line at bottom:

JAVA_HOME="/usr/lib/jvm/jdk1.8.0_71" 

After editing, close console (terminal) window and open new. Test with echo JAVA_HOME.

Answer 2

from terminal:

vi ~/.bash_profile

than change:

export JAVA_HOME= path_to_java_here

than:

source ~/.bash_profile

verify with:

echo $JAVA_HOME