1、Ubuntu中JDK10的安装命令
sudo apt-get install openjdk-11-jdk
2、通过PPA源安装
1）安装JDK10
sudo add-apt-repository ppa:linuxuprising/java
sudo apt-get update
sudo apt-get install oracle-java10-installer
2）设置为默认值
sudo apt-get install oracle-java10-set-default
3、Ubuntu中手动下载安装JDK10
1）下载安装文件
下载地址： https://jdk.java.net/10/
2）解压安装文件
tar xzvf openjdk-10_linux-x64_bin.tar.gz
3）移动解压的文件到系统已安装JDK的位置
sudo mv jdk-10 /usr/lib/jvm/java-10-openjdk-amd64/
4）更新配置
sudo update-alternatives --install /usr/bin/java java /usr/lib/jvm/java-10-openjdk-amd64/bin/java 1
sudo update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/java-10-openjdk-amd64/bin/javac 1
5）更新系统的Java配置并选择JDK 10
$ sudo update-alternatives --config java
here are 3 choices for the alternative java (providing /usr/bin/java).
Selection Path Priority Status
------------------------------------------------------------
0 /usr/lib/jvm/java-9-openjdk-amd64/bin/java 1091 auto mode
* 1 /usr/lib/jvm/java-10-openjdk-amd64/bin/java 1 manual mode
2 /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java 1081 manual mode
3 /usr/lib/jvm/java-9-openjdk-amd64/bin/java 1091 manual mode
Press <enter> to keep the current choice[*], or type selection number:
6）验证安装
$ java --version
openjdk 10 2018-03-20
OpenJDK Runtime Environment 18.3 (build 10+46)
OpenJDK 64-Bit Server VM 18.3 (build 10+46, mixed mode)