somebody please please help me!

Hi everyone!
im a complete java beginner and stuck trying to write some java programmes.
Please can anybody help me?
the questions are…..

1)’The Heron method is a method for computing square roots that was known to the ancient Greeks.If x is a guess for the value of the squareroot of a , then the average of x and a/x ia a better guess.
Implement a class RoorApproximator that starts with an initial guess of 1 and whose nextGuess method produces a sequence of increasingly better guesses.Supply a method hasmoreGuesses that returns ‘false’ if two successive guesses are sufficiently close to eaach other. Then test your class like this:
Rootapproximator r = new RootApproximator(n);
while (r.hasMoreGuesses())
System.out.println(r.nextGuess()); ‘

2) Write a java programme that computes e^{^x} using the power series – e^{^x} = sum from 0 to infinity of (X^{^n} / n!).

I reckon anyone who knows java will understand my problems as a complete beginner lol. So if anyone could help me with this programme it would be much appreciated….
Thanks everyone
x

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