1. Download the installation package
Address: http://download.oracle.com/otn-pub/java/jdk/8u171-b11/512cd62ec5174c3487ac17c61aaa89e8/jdk-8u171-linux-x64.tar.gz
2. Create a directory
mkdir /opt/tools
switch directory
cd /opt/tools
3. Upload and download files to the directory of the server
4. Unzip
tar -zxvf jdk-8u171-linux-x64.tar.gz
5. Transfer directory
cp -r jdk1.8.0_171 /usr/local
6. Edit the configuration file
vi /etc/profile
Add the following code at the end
export JAVA_HOME=/usr/local/jdk1.8.0_171local
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export PATH=$JAVA_HOME/bin:$PATH
wq! Enter to save and exit
7. Make it effective
source /etc/profile
8. Verify
java -version