How to Install JAVA 8 (JDK 8u45) on Linux Systems

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38 Responses

  1. tarun singhal says:

    wget –no-cookies –no-check-certificate –header “Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense=accept-securebackup-cookie” “http://download.oracle.com/otn-pub/java/jdk/8u45-b14/jdk-8u45-linux-x64.tar.gz”

    above command giving error
    HTTP request sent, awaiting response… 404 Not Found
    2017-09-10 21:53:31 ERROR 404: Not Found.

    Please explain

    • Ravi Saive says:

      @Tarun,

      Please go to the oracle download section and download the latest version of Java and follow the instructions to install it on Linux..

  2. Sk Haider says:

    Its still showing previous version

  3. Amit says:

    Hi Guys, Here I am writing some simple steps to install JAVA JDK AND JRE on Linux systems.

    First download jdk-8u112-linux-x64.tar.gz and jre-8u112-linux-x64.tar.gz

    Note: Here I am sharing my Java installation instructions, which I have done in my Linux system using root user account or sudo privileges will also work.

    1. Switch to root user.

    [email protected]:~$sudo -i
    [sudo] password for amit: *******  
    {after this you will reach into root privileged}
    

    2. Create one folder where you would like to copy your both JDK and JRE software, In my case I place my software in /usr/local/java directory.

    So after downloading go into downloading directory folder mostly it will be: /home/amit/Downloads – in your case username will be yours.

    [email protected]:~# cd /home/amit/Downloads
    [email protected]:~# ls    
    jre-8u112-linux-x64.tar.gz	jdk-8u112-linux-x64.tar.gz
    

    3. Now copy both jdk and jre into your desire system location:

    [email protected]:~# mkdir /usr/local/java
    [email protected]:~#cp jre-8u112-linux-x64.tar.gz /usr/local/java
    [email protected]:~#cp jdk-8u112-linux-x64.tar.gz /usr/local/java
    

    4. Extract the content of both files.

    [email protected]:~#cd /usr/local/java
    [email protected]:~#tar zxvf jre-8u112-linux-x64.tar.gz
    [email protected]:~#tar zxvf jdk-8u112-linux-x64.tar.gz
    

    Verify the contents

    [email protected]:~#ls
    jdk1.8.0_112 	jdk-8u112-linux-x64.tar.gz
    jre1.8.0_112 	jre-8u112-linux-x64.tar.gz
    

    5. Now set tha Java environment variables.

    [email protected]:~# gedit /etc/profile

    At the bottom you just copy and paste below lines.

    unset _JAVA_OPTIONS
    JAVA_HOME=/usr/local/java/jdk1.8.0_112
    JRE_HOME=/usr/local/java/jre1.8.0_112
    PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin
    export JAVA_HOME
    export JRE_HOME
    export PATH
    
    Else, if only JDK installation Require
    
    unset _JAVA_OPTIONS
    JAVA_HOME=/usr/local/java/jdk1.8.0_112
    JRE_HOME=$JAVA_HOME/jre
    PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin
    export JAVA_HOME
    export JRE_HOME
    export PATH
    

    Now just save and close page:

    6. After this perform some commands in terminal.

    [email protected]:~# update-alternatives --install "/usr/bin/java" "java" /usr/local/java/jre1.8.0_112/bin/java" 1
    [email protected]:~# update-alternatives --install "/usr/bin/javac" "javac" /usr/local/java/jdk1.8.0_112/bin/javac" 1
    [email protected]:~# update-alternatives --install "/usr/bin/javaws" "javaws" /usr/local/java/jre1.8.0_112/bin/javaws" 1
    [email protected]:~# update-alternatives --set java /usr/local/java/jre1.8.0_112/bin/java
    [email protected]:~# update-alternatives --set javac /usr/local/java/jdk1.8.0_112/bin/javac
    [email protected]:~# update-alternatives --set javaws /usr/local/java/jre1.8.0_112/bin/javaws
    [email protected]:~# . /etc/profile
    [email protected]:~#
    

    7. Finally, you can check java version, JAVA HOME, and JRE Home. PATH.

    [email protected]:~# echo $HOME
    /root
    


    [email protected]:~# echo $PATH
    /u01/app/oracle/product/11.2.0/xe/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/local/java/jdk1.8.0_112/bin:/usr/local/java/jre1.8.0_112/bin

    [email protected]:~# echo $JAVA_HOME
    /usr/local/java/jdk1.8.0_112
    [email protected]:~# echo $JRE_HOME
    /usr/local/java/jre1.8.0_112
    [email protected]:~# java -version
    java version "1.8.0_112"
    Java(TM) SE Runtime Environment (build 1.8.0_112-b15)
    Java HotSpot(TM) 64-Bit Server VM (build 25.112-b15, mixed mode)
    

    Thanks..

  4. Arpit Semwal says:

    ‘java -version’ command still shows the previous version.

    • Ravi Saive says:

      @Arpit,

      Seems your Java installation was not successful, try to follow the instructions again carefully..

    • aymanezizi says:

      yes because he wrote export command in wrong way, you should write it as :
      export PATH=/opt/java/jdk1.8.0_45/bin:/opt/java/jdk1.8.0_45/jre/bin

      then you will notice that the new version installed

  5. lothmas says:

    really cool, thanks a lot. this saved me a lot of time

  6. Cristian says:

    This is great, I always come back to this

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