1. 安装JRE有两种选项，可选Open-JRE以及Oracle的官方JRE 2. 安装JRE可参考：[教程1](https://ubuntu.com/tutorials/install-jre#2-installing-openjre) - 命令: `sudo apt install openjdk-8-jre` 3. 安装oracle jre可参考: [教程2](https://ubuntu.com/tutorials/install-jre#3-installing-oracle-jre) - 另一个详细版本: [教程3](https://www.guru99.com/how-to-install-java-on-ubuntu.html#:~:text=How%20to%20Download%20%26%20Install%20Java%20in%20Linux%28Ubuntu%29,location%20of%20your%20zip%20file.%20More%20items...%20)
sudo apt install openjdk-8-jre