How to install Oracle JDK 6, JDK 7, JDK 8 on Linux base OS

Install Oracle Java Development Kit JDK6, JDK7, JDK8 on Linux base operating system like, ChaletOS 16.04 | LinuxMint 17 | Ubuntu 16.04

# How To Install Oracle Java 14 (JDK 14) On Ubuntu, Debian Or Linux Mint From APT PPA Repository

# Install Oracle Java 13 On Ubuntu, Linux Mint Or Debian From APT PPA Repository

[emranproject]

we try with this code:
$ sudo add-apt-repository ppa:webupd8team/java
$ sudo apt-get update
$ sudo apt-get install oracle-java8-installer
$ sudo apt-get install oracle-java8-set-default
it's also work on LinuxMint 19 "TARA"

[lolmuta]

can you give command list, really need thanks