源码安装jdk

下载文件包jdk-8u221-linux-x64.tar.gz

解压:

[root@localhost ~]# tar -zxvf jdk-8u221-linux-x64.tar.gz -C /usr/local/
[root@localhost ~]# ls -d /usr/local/jdk1.8.0_221/　　　　#查看jdk的安装目录
/usr/local/jdk1.8.0_221/

配置环境变量并验证jdk是否安装成功:

[root@localhost ~]# vim /etc/profile
export JAVA_HOME=/usr/local/jdk1.8.0_221
export CLASSPATH=$:CLASSPATH:$JAVA_HOME/lib/ 
export PATH=$PATH:$JAVA_HOME/bin
[root@localhost ~]# source /etc/profile
[root@localhost ~]# java -version
java version "1.8.0_221"
Java(TM) SE Runtime Environment (build 1.8.0_221-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.221-b11, mixed mode)