Install jdk 8 into Ubuntun in the windows

Today, I would like to see if I can get Confluent platform working in the windows.

Trying to install JDK 8 now.

Learn the installation from
sudo add-apt-repository ppa:webupd8team/java 
sudo apt-get update 

sudo apt-get install oracle-java8-installer

However, it's not available as oracle tighten the jdk license recently.

Find another package

sudo apt-get update 

sudo apt-get install openjdk-8-jdk

I can get through  this installation