Install the appropriate version of OpenJDK JAVA_VERSION=8 sudo add-apt-repository -y ppa:openjdk-r/ppa sudo apt-get update sudo apt-get -qq install -y openjdk-$JAVA_VERSION-jdk Set Environment Variables in /etc/profile.d/jdk.sh JAVA_HOME=/usr/lib/jvm/java-$JAVA_VERSION-openjdk-amd64 echo "export JAVA_HOME=$JAVA_HOME" | sudo tee -a /etc/profile.d/jdk.sh echo "export J2SDKDIR=$JAVA_HOME" | sudo tee -a /etc/profile.d/jdk.sh echo "export J2REDIR=$JAVA_HOME/jre" | sudo tee -a /etc/profile.d/jdk.sh echo "export PATH=$PATH:$JAVA_HOME/bin:$J2REDIR/bin" | sudo tee -a /etc/profile.d/jdk.sh Check your installation /bin/bash /etc/profile.d/jdk.sh java -version echo $JAVA_HOME echo $J2REDIR echo $PATH

在Debian上你可以试试

apt-get install default-jdk

安装在ubuntu 18.04中

我的解决办法是，

$ sudo apt update

安装OpenJDK 8:

$ sudo apt install openjdk-8-jdk

通过运行以下命令来验证Java安装，该命令将打印Java版本:

$ java -version

输出应该是这样的:

输出:

openjdk version "1.8.0_191"
OpenJDK Runtime Environment (build 1.8.0_191-8u191-b12-2ubuntu0.18.04.1-b12)
OpenJDK 64-Bit Server VM (build 25.191-b12, mixed mode)

尝试使用SDKMAN!包管理器- https://sdkman.io/install 现在，它是在任何Linux发行版上安装许多基于jvm的sdk、工具和框架的最简单方法。

在安装之后，运行以下命令查看所有可用的Java发行版:

sdk list java

选择您需要的发行版并安装它:

sdk install java <version>

参考问Ubuntu问题如何设置OpenJDK的JAVA_HOME ?，

如何在Ubuntu (Linux)下安装Open JDK (Java开发工具包)?

Open Terminal from Application Dash or press Ctrl+Alt+T Update repository: sudo add-apt-repository ppa:openjdk-r/ppa # only Ubuntu 17.4 and earlier sudo apt update Optional: To search available distributions of openjdk, use the following command: apt search openjdk 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 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 (Note: /usr/lib/jvm/java-8-openjdk is symbolically used here just for demostration. You should use your path as per your installation.) For PATH (Environment Variable) type command as shown below, in Terminal: export PATH=$PATH:$JAVA_HOME/bin To check your installation: java -version

在2019年初Oracle Java许可证变更之前，以下操作可以正常工作。

sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java7-installer

PPA将终止，直到作者找到解决许可证问题的解决方案。