Welcome to the Ranch
I am afraid you have posted in the forum where we discuss Ranch problems, so I shall move your discussion.
You will get help quicker if we know what the question is; you would do well to use the "edit" button to change your thread title.
You will have to work out what the algorithm is, because we don't hand out code. Work the algorithm out, and write down with pencil and paper, and a large eraser, exactly how you wold solve it by hand. When you have that, you will know how to do it on screen.
And we never use the word "urgent".

This is not really a Java question, it is more of a scientific programming question.

You will need to start by writing down the equation for the Entropy balance for your system.

If the balance depends on time, or other state derivatives, you will probably need a initial value ode solver. They are not hard to write, just substitute a small delta t for dt in the equations. Or, do a google on initial value ode java. Runge Kutta is a typical initial value ode solution algorithm.

If the balance does not depend on time, or other state derivatives, then you have to just solve the equation for Entropy. And then program the resulting equation.

Here is a link to a java entropy solution
Java Entropy Solution And, here is a link that defines entropy, to help you write down the equations for your system. Entropy Equations

John

hey shanthini
Greenhorn

Joined: Aug 27, 2011
Posts: 3

posted

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ok sir.. here after i wont use the word urgent...
i'l try to do my own work with that algorithm, also i searched in google..
I didnt get any information regarding that.. thats why posted as forum..
I need Entropy Variation algorithm coding(in JAVA) for DDOS attack..

//NOTE//
My Base Paper Title: "Traceback of DDOS attacks using Entropy Variations"

Thank you..

John Vorwald
Ranch Hand

Joined: Sep 26, 2010
Posts: 139

posted

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I misunderstood the word Entropy. Good luck with your search. Sounds like an interesting, and important, topic.

hey shanthini
Greenhorn

Joined: Aug 27, 2011
Posts: 3

posted

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Hi..
Its ok John sir...
Can you please help me for getting Entropy Variation code for DDOS attack in java..

Thanks..
Shanthini

Campbell Ritchie
Sheriff

Joined: Oct 13, 2005
Posts: 40027

28

posted

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hey shanthini wrote: . . . Can you please help me for getting Entropy Variation code for DDOS attack in java.. . . .

hey shanthini wrote:Hi..
I need java coding for Entropy Variation algorithm.
can any one please help me...?
its urgent for me..

Hi,
Have you got the coding for entropy variation algorithm??
Hope so you have it,please send to keerdcse@gmail.com if you have it,its need for our ongoing project.
it will be really good,if you help us
thank you

regards,
keerthi

Campbell Ritchie
Sheriff

Joined: Oct 13, 2005
Posts: 40027

28

posted

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Welcome to the Ranch
I do not know whether that code will be available; you might find something useful if you google for it.