[root@jiaxin-ceshi ~]# cd /usr/local/src/
[root@jiaxin-ceshi ~]# wget http://download.oracle.com/otn-pub/java/jdk/8u192-b12/750e1c8617c5452694857ad95c3ee230/jdk-8u192-linux-x64.tar.gz?AuthParam=1539930043_c77c30bb42d98575d39b9073b261a8fa
[root@jiaxin-ceshi ~]# mv jdk-8u192-linux-x64.tar.gz?AuthParam=1539930043_c77c30bb42d98575d39b9073b261a8fa jdk-8u192-linux-x64.tar.gz
[root@jiaxin-ceshi src]# tar xf jdk-8u192-linux-x64.tar.gz 
[root@jiaxin-ceshi src]# mv jdk1.8.0_192/ jdk1.8
[root@jiaxin-ceshi src]# vim /etc/profile
JDK1.8
JDK1.8
JDK1.8
JAVA_HOME=/usr/local/jdk1.8.0_172
JRE_HOME=/usr/local/jdk1.8.0_172/jre
PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin
CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JRE_HOME/lib
export JAVA_HOME JRE_HOME PATH CLASSPATH
[root@jiaxin-ceshi src]# source /etc/profile
[root@jiaxin-ceshi src]# java -version
