Page reload for firefox

How to make mozila firefox automatic page reload ?
Now
Firstly open your firefox
Secondly click add-ons

click

type

                                                                       install

  

click option 

 

JAVA Language

This language is capable of solving almost all the computation problems.

This is why It is the most used programming language on earth.

C Programming

This is the basic Programming language for a novice programmer.