openjdk #

install on Ubuntu #

bash
sudo apt update
# JDK:
sudo apt install openjdk-8-jdk
# JRE:
#sudo apt install openjdk-8-jre

install on CentOS #

bash
# Install EPEL repo:
#sudo yum install epel-release
sudo yum update

# JDK:
sudo yum install java-1.8.0-openjdk-devel
# JRE:
sudo yum install java-1.8.0-openjdk
#sudo yum install java-11-openjdk

docker image #

text
openjdk:8

env #

bash
export JAVA_HOME=...
export PATH=$PATH:$JAVA_HOME/bin

test java #

bash
java -version

多版本共存 #

TODO