Step 2 - Install Java
Download java 8 release of the Java Runtime Environment (JRE)
For the standalone version you will only need the Java Runtime Environment (JRE) not Java Development Kit (JDK)
Java 8 isn’t just recommended… it’s required for most releases in the 2.x series.
To download the application use the this link https://www.oracle.com/in/java/technologies/javase/javase8-archive-downloads.htmlAccept the license agreement and make sure you download the correct file basing on your operating system, whether its x32 or x64 bit.
Note: If you are unsure about the version please follow this guide http://update.se.wtb.tue.nl/documentation/install/manual-java.html
It is recommended to download the executable file (.exe) for a simpler run
Execute the downloaded file, accept the license agreement and follow the instructions in the wizard, installing in default installation directories.
Ubuntu
You can install the OpenJDK on it's own as a package
sudo apt-get install openjdk-8-jdk
or automatically as a dependency of Tomcat
sudo apt-get install tomcat7