This Guide shows you How to Install Apache Tomcat 7 Server Release on Linux Lubuntu 12.04 Precise Pangolin i386/amd64 Desktop.
Inside the Post you will Find a Link to Getting-Started with Tomcat 7 on Linux Lubuntu.
Finally, to improve the Visualization of the whole Process the Post includes the Essential Screenshots.

Download Apache Tomcat 7 Server.
Apache Tomcat 7 tar.gzDouble-Click on Archive and Extract into /tmp
Open Terminal Window
(Press “Enter” to Execute Commands)In case first see: Terminal QuickStart Guide.
Relocate Apache Tomcat 7
sudo su -c "chown -R root:root /tmp/apache-tomcat*
mv /tmp/apache-tomcat-7 /usr/lib"
Check if Java is Installed on your Platform
java -version
The Output Need to Show a Version >= 1.6.
How to Install Recommended Oracle JDK for Linux Lubuntu:
Install Oracle JDK for LubuntuCommands to Start and Stop the Tomcat Server
Start
/usr/lib/apache-tomcat-7/bin/startup.sh
Stop
/usr/lib/apache-tomcat-7/bin/shutdown.sh
Then to Access Tomcat Admin on Browser Go.
Tomcat 7 Deployment Quick Start: