install jdk 8 in ubuntu code example

Example 1: install openjdk 8 sdk on ubuntu

sudo apt-get install openjdk-8-jdk

Example 2: debian install java

# If you want java 11:
sudo apt install -y default-jre

# If you want java 8:
sudo apt update
sudo apt install -y apt-transport-https ca-certificates wget dirmngr gnupg software-properties-common
wget -qO - https://adoptopenjdk.jfrog.io/adoptopenjdk/api/gpg/key/public | sudo apt-key add -
sudo add-apt-repository --yes https://adoptopenjdk.jfrog.io/adoptopenjdk/deb/
sudo apt update
sudo apt install -y adoptopenjdk-8-hotspot

# Switch java version
sudo update-alternatives --config java

Example 3: install java ubuntu

sudo apt install default-jre

Example 4: ubuntu install jdk 14

sudo add-apt-repository ppa:linuxuprising/java
sudo apt-get update
sudo apt-get install oracle-java14-installer oracle-java14-set-default

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Java Example