where to set java_home code example

Example 1: set java home path

export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64

# Add JAVA bin directory to the PATH variable
export PATH=$PATH:$JAVA_HOME/bin

Example 2: find where JAVA_HOME is set

grep JAVA_HOME /etc/environment /etc/bash.bashrc /etc/profile.d/* /etc/profile