Iterasi Bilangan Fibonanci

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package new1;

import javax.swing.JOptionPane;
/**
 *
 * @author surur syifaus
 */
public class fibonanci_iterasi {


    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
    int deret=Integer.parseInt(JOptionPane.showInputDialog("Masukkan berapa deret Fibonacci: "));
        int a=0;
        int b=1;
        System.out.print(deret+" deret Fibonacci: " );
        for (int i=0;i<deret;i++){
            System.out.print(a+" ");
            a=a+b;
            b=a-b;
        }
    }
}