Setting persistent environment variable in CentOS 7

1    echo 'export JAVA_HOME="/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.71-2.b15.el7_2.x86_64"' >> $HOME/.bashrc


2    echo export JAVA_HOME="put path to java home here">/etc/profile.d/javaenv.sh
chmod 0755 /etc/profile.d/javaenv.sh

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