How to install netbeans ide on ubuntu

For the downloaded .sh file
Step 1: make the file executable by running the following command at terminal in the saved folder
chmod +x

For example: chmod +x netbeans-8.2-javase-linux.sh

If you get the error
The JDK is missing and is required to run some NetBeans modules Please use the --jdkhome command line option to specify a JDK installation or see http://wiki.netbeans.org/FaqRunningOnJre for more information.

First check if you have jvm on your machine
java -version 
javac -version

If you see java versions then you just need to find 
This probably means jdk path is not set correctly just modify netbeans.conf

netbeans_jdkhome="/usr/lib/jvm/java-8-oracle"

And now reexecute