Install Wowza on Ubuntu 12.04.4 LTS

Install Java 7

apt-get install software-properties-common python-software-properties

add-apt-repository ppa:webupd8team/java

apt-get update

apt-get install oracle-java7-installer

apt-get install oracle-java7-set-default

Install Java 8
apt-get install software-properties-common python-software-properties 

sudo add-apt-repository ppa:webupd8team/java

sudo apt-get update

sudo apt-get install oracle-java8-installer

Install Wowza

sudo wget http://www.wowza.com/downloads/WowzaStreamingEngine-4-0-3/WowzaStreamingEngine-4.0.3.deb.bin

sudo chmod +x WowzaStreamingEngine-4.0.3.deb.bin
sudo ./WowzaStreamingEngine-4.0.3.deb.bin