Upgrade Oracle Java 7 to Java 8 for Ubuntu

How to update jdk latest version in ubuntu or ubuntu server or aws ubuntu server

cmds:
          sudo add-apt-repository ppa:webupd8team/java
     sudo apt-get update

     sudo apt-get install oracle-java8-installer


Eg:
              ubuntu@ip-0-0-0-0:~$ sudo add-apt-repository ppa:webupd8team/java
              ubuntu@ip-0-0-0-0:~$ sudo apt-get update

              ubuntu@ip-0-0-0-0:~$ sudo apt-get install oracle-java8-installer