Ubuntu-java环境搭建

jdk安装

sudo apt update
sudo apt install openjdk-8-jdk

https://linuxize.com/post/install-java-on-ubuntu-18-04/

Intellij idea 安装

https://www.xiaomiqiu.com/article/77

marven安装

https://linux265.com/news/3465.html
https://www.cnblogs.com/FengZeng666/p/11992420.html