JDK8#

安装

yum list java*
yum install -y java-1.8.0-openjdk.x86_64

设置环境变量(JAVA_HOME)

vi /etc/profile
-------------------------------
# 注意版本路径可能不一致
export JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.412.b08-1.el7_9.x86_64/jre
export PATH=$JAVA_HOME/bin:$PATH
-------------------------------
source /etc/profile

java -version

JDK11#

安装

yum list java*
yum install java-11-openjdk.x86_64

设置环境变量(JAVA_HOME)

vi /etc/profile
-------------------------------
# 注意版本路径可能不一致
export JAVA_HOME=/usr/lib/jvm/java-11-openjdk-11.0.23.0.9-2.el7_9.x86_64
export PATH=$JAVA_HOME/bin:$PATH
-------------------------------
source /etc/profile

java -version

JDK17#

centos7.9 yum安装不了jdk17，使用二进制包安装

wget https://download.oracle.com/java/17/latest/jdk-17_linux-x64_bin.tar.gz

tar zxf jdk-17_linux-x64_bin.tar.gz
rm -rf jdk-17_linux-x64_bin.tar.gz
mv jdk-17.0.8 jdk-17

mv jdk-17 /usr/local/

vi /etc/profile
-------------------------------
export JAVA_HOME=/usr/local/jdk-17
export PATH=$JAVA_HOME/bin:$PATH
-------------------------------
source /etc/profile

java -version

附：yum卸载jdk