Java/OpenJDK11

   1 cd ~
   2 wget https://download.java.net/java/GA/jdk11/9/GPL/openjdk-11.0.2_linux-x64_bin.tar.gz
   3 tar xvzf openjdk-11.0.2_linux-x64_bin.tar.gz
   4 cd jdk-11.0.2/bin
   5 ./jmod list ../jmods/java.base.jmod

   1 ./java -version
   2 #openjdk version "11.0.2" 2019-01-15
   3 #OpenJDK Runtime Environment 18.9 (build 11.0.2+9)
   4 #OpenJDK 64-Bit Server VM 18.9 (build 11.0.2+9, mixed mode)
   5 ./javac -version
   6 # javac 11.0.2
   7 ./jshell
   8 #Feb 09, 2019 9:13:05 AM java.util.prefs.FileSystemPreferences$1 run
   9 #INFO: Created user preferences directory.
  10 #|  Welcome to JShell -- Version 11.0.2
  11 #|  For an introduction type: /help intro
  12 #jshell>
  13 #jshell> /ex
  14 #|  Goodbye
  15 

   1 cd /opt
   2 wget https://github.com/AdoptOpenJDK/openjdk8-binaries/releases/download/jdk8u222-b10/OpenJDK8U-jdk_x64_linux_hotspot_8u222b10.tar.gz
   3 tar xvzf OpenJDK8U-jdk_x64_linux_hotspot_8u222b10.tar.gz
   4 cd jdk8u222-b10/
   5 chgrp users * -R
   6 # JAVA_HOME
   7