Problem

Write a complete Java program Fibonacci that:

• prompts the user to enter an input n and cast it to integer
  
• get the nth fibonacci numbers using FOR loop, based on the user's input
  
• prints out the nth fibonacci number, using JOptionPane.showMessageDialog method.
  

Note that the fibonacci sequence is F(0) = 1, F(1) = 1, F(n) = F(n-1) + F(n-2) for n > 1.
Example: F(5) = 1, 1, 2, 3, 5, 8
Your output should look something like
"The 5th number of the fibonacci sequence is 5."

You may assume that the user always enters correct intenger format.

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Solution

Code

Solution Code

import javax.swing.JOptionPane;<br/>
<br/>
public class Fibonacci <br/>
{<br/>
    public static void main(String[] args)<br/>
    {     	<br/>
 		int current = 1;<br/>
 		int previous = 0;<br/>
 		<br/>
 		int n = Integer.parseInt(JOptionPane.showInputDialog("Please enter n"));<br/>
 		<br/>
 		for(int i = 0; i < n; i++)<br/>
 		{<br/>
 			int temp = previous;<br/>
 			previous = current;<br/>
 			current = temp + previous;<br/>
 		}<br/>
 		
 		System.out.println("The " + n + "th Fibonacci number is " + current);<br/>
    }<br/>