1. Install
# cd /opt
# wget --no-cookies --no-check-certificate --header "Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense=accept-securebackup-cookie" "http://download.oracle.com/otn-pub/java/jdk/7u72-b14/jdk-7u72-linux-x64.tar.gz"
# tar xzf jdk-7u72-linux-x64.tar.gz
# cd /opt/jdk1.7.0_72/
# alternatives --install /usr/bin/java java /opt/jdk1.7.0_72/bin/java 2
# alternatives --config java
2. setup javac and jar commands path using alternatives
# alternatives --install /usr/bin/jar jar /opt/jdk1.7.0_72/bin/jar 2
# alternatives --install /usr/bin/javac javac /opt/jdk1.7.0_72/bin/javac 2
# alternatives --set jar /opt/jdk1.7.0_72/bin/jar
# alternatives --set javac /opt/jdk1.7.0_72/bin/javac
3. Check JAVA Version
# java -version
4. Setup Environment Variables
Setup JAVA_HOME Variable
# export JAVA_HOME=/opt/jdk1.7.0_72
Setup JRE_HOME Variable
# export JRE_HOME=/opt/jdk1.7.0_72/jre
Setup PATH Variable
# export PATH=$PATH:/opt/jdk1.7.0_72/bin:/opt/jdk1.7.0_72/jre/bin
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