JAVA_HOME returns blank Linux Mint 18.3

Question

After update of Linux I have an issue with JAVA_HOME directory. echo doesn't find directory for JAVA_HOME.

I have uninstalled java using:

apt-get purge oracle-java8-installer

Then

apt-get update

Then apt-get install oracle-java8-installer

After this I have checked if /etc/environment has correct JAVA_HOME directory and everything is correct but "echo $JAVA_HOME" still returns blank. I couldn't find solutions on google (even on stackoverflow). I am newbie, maybe I am doing something in wrong way.

How I can try to resolve this problem?

On the screen I have attached commands which I used to check correct directory.

Answer 1

Linux is case sensitive. You are setting JAVA_Home but trying to use JAVA_HOME.

I suggest setting JAVA_HOME only.