centos7.6 安装jdk1.8

1. 下载 jdk-8u211-linux-x64.tar.gz文件.

2. 创建/opt/soft目录，# cd /opt, # mkdir soft, #tar -zxvf  jdk-8u211-linux-x64.tar.gz.

3. 创建/usr/local/java目录# mkdir /usr/local/java，把上述解压的文件夹jdk1.8.0_211复制到/usr/local/java目录下。

4. 修改/etc/profile文件：#vi /etc/profile

 export JAVA_HOME=/usr/local/java/jdk1.8.0_211

 export JRE_HOME=/usr/local/java/jdk1.8.0_211/jre

export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JRE_HOME/lib:$CLASSPATH export PATH=$PATH:$JAVA_HOME/bin

5. 刷新配置文件#source /etc/profile.

6. 执行#java -version.

java version "1.8.0_211"
Java(TM) SE Runtime Environment (build 1.8.0_211-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.211-b12, mixed mode).
表示安装完毕。