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Thread: How to install JAVA 7u21 offline? [Ubunutu 12.04] 32BIT

  1. #1
    Join Date
    May 2013
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    How to install JAVA 7u21 offline? [Ubunutu 12.04] 32BIT

    i want to use java 7u21 for android strudio,

    would you help me to install java 7 u21 (32 BIT) TAR package downloaded from ORACLE Website.
    Last edited by violetkiwi; May 31st, 2013 at 10:27 PM.

  2. #2
    Join Date
    Nov 2012
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    Xubuntu Development Release

    Re: How to install JAVA 7u21 offline? [Ubunutu 12.04] 32BIT

    I'm assuming you've already downloaded both tars, JDK and JRE. So, here's what you have to do:
    First create a directory to hold your Java JDK and JRE binaries:
    Code:
    sudo mkdir -p /usr/local/java
    Then, copy the Java binaries into the /usr/local/java directory:
    Code:
    cd folder_where_your_tars_are_located
    sudo cp -r jdk-7u21-linux-i586.tar.gz /usr/local/java
    sudo cp -r jre-7u21-linux-i586.tar.gz /usr/local/java
    cd /usr/local/java
    Unpack the compressed Java binaries, in the directory /usr/local/java:
    Code:
    sudo tar xvzf jdk-7u21-linux-i586.tar.gz
    sudo tar xvzf jre-7u21-linux-i586.tar.gz
    Edit the system PATH file /etc/profile and add the following system variables to your system path. Use nano, geany, gedit or any other text editor, as root:
    Code:
    sudo geany /etc/profile
    and add the following lines below to the end of your /etc/profile file:
    Code:
    JAVA_HOME=/usr/local/java/jdk1.7.0_21
    PATH=$PATH:$HOME/bin:$JAVA_HOME/bin
    JRE_HOME=/usr/local/java/jre1.7.0_21
    PATH=$PATH:$HOME/bin:$JRE_HOME/bin
    export JAVA_HOME
    export JRE_HOME
    export PATH
    Save the /etc/profile file and exit.
    After that, notify your Ubuntu system where your Java JDK/JRE are located:
    Code:
    sudo update-alternatives --install "/usr/bin/java" "java" "/usr/local/java/jre1.7.0_21/bin/java" 1
    sudo update-alternatives --install "/usr/bin/javac" "javac" "/usr/local/java/jdk1.7.0_21/bin/javac" 1
    sudo update-alternatives --install "/usr/bin/javaws" "javaws" "/usr/local/java/jre1.7.0_21/bin/javaws" 1
    and that Java JDK/JRE must be the default Java:
    Code:
    sudo update-alternatives --set java /usr/local/java/jre1.7.0_21/bin/java
    sudo update-alternatives --set javac /usr/local/java/jdk1.7.0_21/bin/javac
    sudo update-alternatives --set javaws /usr/local/java/jre1.7.0_21/bin/javaws
    Finally, reload your system wide PATH /etc/profile by typing the following command:
    Code:
    . /etc/profile
    Please mark your thread as solved if you get a satisfactory response
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  3. #3
    Join Date
    May 2013
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    Re: How to install JAVA 7u21 offline? [Ubunutu 12.04] 32BIT

    if you see below error when you launch android studio , RESTART THE COMPUTER

    "tool.jar is not in Android Studio classpath. Please ensure JAVA_HOME points to JDK rather than JRE"
    Last edited by violetkiwi; May 31st, 2013 at 10:33 PM.

  4. #4
    Join Date
    May 2013
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    7

    Re: How to install JAVA 7u21 offline? [Ubunutu 12.04] 32BIT

    Restarting system solved the issue.

  5. #5
    Join Date
    May 2013
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    7

    Re: How to install JAVA 7u21 offline? [Ubunutu 12.04] 32BIT

    Thankyou slickyMaster for detailed steps for installation.

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