[fitkoh]

Yes i just follow the link you given but command line not works. how can i help you to sort out actual issue? 
The destination Link is bellow:

Installation of the JDK on Linux Platforms (oracle.com)

but i unable to find the installing candidate of this

Code: (Select All)

jdk-15_linux-x64_bin.tar.gz

The second link in my first post will take you to the downloads page. https://www.oracle.com/java/technologies...loads.html

It turns out I was wrong in my previous post about no .deb - closer inspection reveals there is a .deb (I will edit previous post to reflect this) https://download.oracle.com/otn-pub/java...64_bin.deb