AdoptOpenJDK

从https://adoptopenjdk.net/下载AdoptOpenJDK。也可以从清华TUNA镜像下载，根据自己的平台选择下载jdk

• https://mirrors.tuna.tsinghua.edu.cn/AdoptOpenJDK/11/jdk/x64/linux/
• https://mirrors.tuna.tsinghua.edu.cn/AdoptOpenJDK/11/jdk/x64/mac/
• https://mirrors.tuna.tsinghua.edu.cn/AdoptOpenJDK/11/jdk/x64/windows/

下载解压缩后,配置好JAVA_HOME和PATH变量，然后执行java -version查看java版本

jim@debian:~$ java -version
openjdk version "11.0.9.1" 2020-11-04
OpenJDK Runtime Environment AdoptOpenJDK (build 11.0.9.1+1)
OpenJDK 64-Bit Server VM AdoptOpenJDK (build 11.0.9.1+1, mixed mode)