linux java versions

gistfile1.txt

You can find a mirror of different Java versions to run on Linux at this location. http://mirrors.rootpei.com/jdk/

Select the jdk-8u181-linux-x64.tar.gz package (or alternatively, download the file attached to this task, added for your convenience).

Download this into your attacking machine, and run the following commands to configure your system to use this Java version by default (adjust the download filesystem path as appropriate):

sudo mkdir /usr/lib/jvm 
cd /usr/lib/jvm

sudo tar xzvf ~/Downloads/jdk-8u181-linux-x64.tar.gz    # modify as needed

sudo update-alternatives --install "/usr/bin/java" "java" "/usr/lib/jvm/jdk1.8.0_181/bin/java" 1
sudo update-alternatives --install "/usr/bin/javac" "javac" "/usr/lib/jvm/jdk1.8.0_181/bin/javac" 1
sudo update-alternatives --install "/usr/bin/javaws" "javaws" "/usr/lib/jvm/jdk1.8.0_181/bin/javaws" 1

sudo update-alternatives --set java /usr/lib/jvm/jdk1.8.0_181/bin/java
sudo update-alternatives --set javac /usr/lib/jvm/jdk1.8.0_181/bin/javac
sudo update-alternatives --set javaws /usr/lib/jvm/jdk1.8.0_181/bin/javaws

After you have downloaded, extracted, and set the appropriate filesystem settings (the update-alternatives syntax) above, you should be able to run java -version and verify you are in fact now running Java 1.8.0_181.