1 Download JDK
Official website
or
Baidu network disk (extraction code: y7n0)
2 Unzip the installation package
Check the jvm directory, if there is no need to create one
cd /usr/lib
ls
Command to create jvm directory
mkdir /usr/lib/jvm
Switch to the location of the installation package, unzip the installation package to the jvm directory
cd ~/Downloads/
sudo tar -zxvf ./jdk-8u271-linux-x64.tar.gz -C /usr/lib/jvm
After decompression, switch to the jvm directory and you can see the jdk directory:
3 Set environment variables
vim ~/.bashrc
Add the following environment:
export JAVA_HOME=/usr/lib/jvm/jdk1.8.0_271
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH=${JAVA_HOME}/bin:$PATH
Make it effective immediately after saving and exiting:
source ~/.bashrc
4 Check if the installation is successful
java -version
If the following version information appears, the installation is successful
