Ubuntu OpenJDK 8 - Unable to locate package

Question

So I just installed Ubuntu  and this is my first time working in a Linux environment  so bear with my noobishness here   Anyway  I downloaded the Java 8 JDK directly from Oracle  but I understand there s also an OpenJDK for Java 8 as well  I have two questions    What is the difference between the Oracle version and OpenJDK  Pros Cons  When I try and get OpenJDK 8  I can t  I m pasting the terminal command and the error message I get here  hoping for advice  Again  very new to Linux  been on my first Linux distro ever for less than an hour here at this point   user computer   Java  sudo apt-get install openjdk-8-jdk Reading package lists    Done Building dependency tree        Reading state information    Done E  Unable to locate package openjdk-8-jdk    Any help would be appreciated  In the meantime  I m just gonna use the Oracle package  Thanks   Edit   So  now I have a new problem  I installed OpenJDK 7  it came with Maven and just installed before I realized I was getting a two-for-one deal  Now I have JDK 7  and Eclipse  and Maven  and they re all working  but I m stuck on JDK 7 rather than 8   I saw that there s a link below  I intend to check it out in the morning  it s 2am and I m tired right now  Any other advice for this new issue would be appreciated  otherwise I will definitely be checking out that link first thing in the morning

User · Accepted Answer

UPDATE  installation without root privileges below    I advise you to not install packages manually on ubuntu system if there is already a  semi-official  repository able to solve your problem  Further  use Oracle JDK for development  just to avoid  very sporadic  compatibility issues  i ve tried many years ago  it s surely better now    Add the webupd8 repo to your system   sudo add-apt-repository ppa webupd8team java sudo apt-get update   Install your preferred version of jdk  versions from java-6 to java-9 available    sudo apt-get install oracle-java8-installer     You can also install multiple version of jdk  mixing openjdk and oracle versions   Then you can use the command update-java-alternatives to switch between installed version     list available jdk update-java-alternatives --list    use jdk7 sudo update-java-alternatives --set java-7-oracle    use jdk8 sudo update-java-alternatives --set java-8-oracle   Requirements  If you get add-apt-repository  command not found be sure to have software-properties-common installed   sudo apt-get install software-properties-common   If you re using an older version Ubuntu   sudo apt-get install python-software-properties     JDK installation without root privileges  If you haven t administrator rights on your target machine your simplest bet is to use sdkman to install the zulu certified openjdk   curl -s  https   get sdkman io    bash source   HOME  sdkman bin sdkman-init sh  sdk install java   NOTE  sdkman allow to install also the official Oracle JDK  although it s not a the default option  View available versions with   sdk ls java   Install the chosen version with   sdk install java  lt version gt    For example   sdk install java 9 0 1-oracle     Glossary of commands   sudo  lt command gt   command arguments   execute a command with the superuser privilege  add-apt-repository  lt PPA id gt   Ubuntu  just like every Debian derivatives and generally speaking every Linux distribution  has a main repository of packages that handle things like package dependencies and updating  In Ubuntu is possible to extend the main repository using a PPA  Personal Package Archive  that usually contains packages not available in the system  just like oracle jdk  or updated versions of available ones  example  LibreOffice 5 in LTS is available only through this PPA   apt-get  install update upgrade purge       it s  the  command-line package handler used to manipulate the state of every repository on the system  installing   updating   upgrading can be viewed as an alteration of the repository current state     In our case  with the command sudo add-apt-repository ppa webupd8team java we inform the system that the next repository update must retrieve packages information also from webupd8 repo   With sudo apt-get update we actually update the system repository  all this operations requires superuser privileges  so we prepend sudo to the commands    sudo apt-get install oracle-java8-installer   update-java-alternatives  a specific java version of update-alternatives   in Ubuntu several packages provides the same functionality  browse the internet  compile mails  edit a text file or provides java javac executables      To allows the system to choose the user favourites tool given a specific task a mechanism using symlinks under  etc alternatives  is used  Try to update the jdk as indicated above  switch between java 7 and java 8  and view how change the output of this command    ls -l  etc alternatives java    In our case  sudo update-java-alternatives --set java-8-oracle update symlinks under  etc alternatives to point to java-8-oracle executables   Extras    man  lt command gt   start using man  to read a really well written and detailed help on  almost  every shell command and its options  every command i mention in this little answer has a man page  try man update-java-alternatives   apt-cache search  lt search key gt   query the APT cache to search for a package related with the search key provided  can be the package name or some word in package description    apt-cache show  lt package gt   provides APT information for a specific package  package version  installed or not  description

User · Answer

After adding the JDK repo  before Installing you might want to run an update first so the repo can be added run  apt update   an then continue with your installation  sudo apt install adoptopenjdk-8-hotspot

User · Answer

I m getting OpenJDK 8 from the official Debian repositories  rather than some random PPA or non-free Oracle binary   Here s how I did it   sudo apt-get install debian-keyring debian-archive-keyring  Make  etc apt sources list d debian-jessie-backports list   deb http   httpredir debian org debian  jessie-backports main   Make  etc apt preferences d debian-jessie-backports   Package    Pin  release o Debian a jessie-backports Pin-Priority  -200   Then finally do the install   sudo apt-get update sudo apt-get -t jessie-backports install openjdk-8-jdk

User · Answer

As you can see I only have java 1 7 installed  on a Ubuntu 14 04 machine       update-java-alternatives -l java-1 7 0-openjdk-amd64 1071  usr lib jvm java-1 7 0-openjdk-amd64   To install Java 8  I did   sudo add-apt-repository ppa openjdk-r ppa sudo apt-get update sudo apt-get install openjdk-8-jdk   Afterwards  now I have java 7 and 8   update-java-alternatives -l java-1 7 0-openjdk-amd64 1071  usr lib jvm java-1 7 0-openjdk-amd64 java-1 8 0-openjdk-amd64 1069  usr lib jvm java-1 8 0-openjdk-amd64   BONUS ADDED  how to switch between different versions    run the follwing command from the terminal       sudo update-alternatives --config java  There are 2 choices for the alternative java  providing  usr bin java      Selection    Path                                            Priority   Status ------------------------------------------------------------   0             usr lib jvm java-7-openjdk-amd64 jre bin java   1071      auto mode   1             usr lib jvm java-7-openjdk-amd64 jre bin java   1071      manual mode   2             usr lib jvm java-8-openjdk-amd64 jre bin java   1069      manual mode  Press enter to keep the current choice     or type selection number     As you can see I m running open jdk 8  To switch to to jdk 7  press 1 and hit the Enter key  Do the same for javac as well with  sudo update-alternatives --config javac    Check versions to confirm the change  java -version and javac -version

User · Answer

I was having the same issue and tried all of the solutions on this page but none of them did the trick   What finally worked was adding the universe repo to my repo list  To do that run the following command  sudo add-apt-repository universe   After running the above command I was able to run  sudo apt install openjdk-8-jre   without an issue and the package was installed   Hope this helps someone

User · Answer

sudo apt-get update sudo apt-get  install openjdk-8-jdk   this should work

[java] Ubuntu: OpenJDK 8 - Unable to locate package

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