ubuntu安装Java11

https://www.oracle.com/java/technologies/javase-jdk11-downloads.html

下载是要登录orcale账号

用xftp文件上传在ubuntu

root@maoli-virtual-machine:/home/maoli# ls
ES  examples.desktop  javase-jdk11-downloads.html  jdk-11.0.6_linux-x64_bin (1).tar.gz  公共的  模板  视频  图片  文档  下载  音乐  桌面
root@maoli-virtual-machine:/home/maoli# 

创建/usr/local/java/放在这里

root@maoli-virtual-machine：mkdir /usr/local/java/

root@maoli-virtual-machine：tar -zxvf jdk-11.0.6_linux-x64_bin\ \(1\).tar.gz -C /usr/local/java


root@maoli-virtual-machine： vim /etc/profile


JAVA_HOME=/usr/local/java/jdk-11.0.6
JRE_HOME=/usr/local/java/jdk-11.0.6/jre
CLASS_PATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JRE_HOME/lib
PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin
export JAVA_HOME JRE_HOME CLASS_PATH PATH

root@maoli-virtual-machine： source /etc/profile
root@maoli-virtual-machine： java -version


root@maoli-virtual-machine:/home/maoli# java -version
java version "11.0.6" 2020-01-14 LTS
Java(TM) SE Runtime Environment 18.9 (build 11.0.6+8-LTS)
Java HotSpot(TM) 64-Bit Server VM 18.9 (build 11.0.6+8-LTS, mixed mode)