Oracle JDK 7 Installation in Ubuntu 23.10 – Step-by-step

Installing

2. 2. Downloading Oracle JDK 7

   Download Oracle Java SE 7 JDK for Linux.

   Here Oracle JDK i586/x8664 tar.gz

   Link to Download the Latest Oracle-Sun Java 1.7 SE JDK 32/64-bit Release

   If you are using Firefox then on Prompt Choose “Open with Archive Manager”:

   

   Or After try to Select the Package by the Downloads Button on Top Panel:

   

   Instead, on Google-Chrome simply try to Choose the Package on the Bottom Panel:

   

   How to Install Chrome Browser on Linux

3. 3. Extracting Oracle JDK 7

   Then Extract JDK 7 into /tmp
   Possibly Double-Click/Right-Click to Open with Archive Manager.
   Or from Shell:

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   tar xvzf ~/Downloads/jdk-7*.tar.gz -C /tmp/

   

4. 4. Setting Up Oracle JDK 7

   Next Relocate Oracle JDK 7 Contents
   Login as the SuperUser:

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   sudo su

   Authenticate with the User Admin Pass.
   If Got “User is Not in Sudoers file” then see: How to Enable sudo
   To Make a jvm Directory Only if Not already there
   (You can directly copy & paste the commands into the terminal)

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   if [ ! -d "/usr/lib/jvm" ]; then mkdir /usr/lib/jvm; fi

   Set the root superUser as owner

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   sudo chown -R root:root /tmp/jdk1.7*

   Then to shift the Oracle JDK 7 contents

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   mv /tmp/jdk1.7* /usr/lib/jvm/
   

5. 5. Installing Oracle JDK 7

   Next to Install Oracle Java JDK 7.

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   update-alternatives --install /usr/bin/java java /usr/lib/jvm/jdk1.7*/bin/java 1065
   

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   update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/jdk1.7*/bin/javac 1065
   

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   update-alternatives --install /usr/bin/jar jar /usr/lib/jvm/jdk1.7*/bin/jar 1065
   

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   update-alternatives --install /usr/bin/javaws javaws /usr/lib/jvm/jdk1.7*/bin/javaws 1065
   

   Checking or Setting the System Java Version in Use
   with

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   update-alternatives --config java

   And for the Java Compiler instead:

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   sudo update-alternatives --config javac

   To Switch of Java Version Just Enter the Selection Number on First, Column. :)
   Last Achieve the SuperUser session:

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   exit