可选：要搜索openjdk的可用发行版，请使用以下命令：

Optional: To search available distributions of openjdk, use the following command:

apt search openjdk

使用以下命令安装适当的版本：

Install the appropriate version with the following command:

sudo apt install openjdk-8-jdk
sudo apt install openjdk-8-source #this is optional, the jdk source code

对于JAVA_HOME （环境变量）类型命令，如下所示，在终端中使用您的安装路径......

For "JAVA_HOME" (Environment Variable) type command as shown below, in "Terminal" using your installation path...

export JAVA_HOME=/usr/lib/jvm/java-8-openjdk

（注意：/ usr / lib / jvm / java-8-openjdk在这里象征性地用于演示。您应该根据您的安装使用您的路径。）

(Note: "/usr/lib/jvm/java-8-openjdk" is symbolically used here just for demostration. You should use your path as per your installation.)

对于PATH（环境变量）类型命令，如下所示，在终端中：

For "PATH" (Environment Variable) type command as shown below, in "Terminal":

export PATH=$PATH:$JAVA_HOME/bin

要检查您的安装：

To check your installation:

java -version