install java on raspberry pi os code example
Example 1: java cmd install raspbian
sudo apt-get install default-jdk
Example 2: install java 11 jdk raspberry pi
sudo wget http://cdn.azul.com/zulu-embedded/bin/zulu11.31.16-ca-jdk11.0.3-linux_aarch32hf.tar.gz
sudo tar -xfvz zulu11.31.16-ca-jdk11.0.3-linux_aarch32hf.tar.gz
sudo rm *.tar.gz