How to install and configure Apache Solr on Ubuntu 17

Apache Solr is an open source enterprise-class search platform written in Java which enables you to create custom search engines that index databases, files, and websites. It has back end support for Apache Lucene. It can e.g. be used to search in multiple websites and can show recommendations for the searched content. Solr uses an XML (Extensible Markup Language) based query and result language. There are APIs (Applications program interfaces) available for Python, Ruby and JSON (Javascript Object Notation).
sudo apt-get update && apt-get upgrade -y
sudo apt-get install python-software-properties
sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java8-installer
java -version

Installing Solr application :-
service solr status
sudo su - solr -c "/opt/solr/bin/solr create -c gettingstarted -n data_driven_schema_configs"