tar zxvf jdk-8u171-linux-x64.tar.gz -C /usr/local/
cat>>/etc/profile<<EOF
JAVA_HOME=/usr/local/jdk1.8.0_171
PATH=$JAVA_HOME/bin:$PATH
CLASSPATH=$JAVA_HOME/jre/lib/ext:$JAVA_HOME/lib/tools.jar
export PATH JAVA_HOME CLASSPATH
EOF
source /etc/profile
java -version