Fibonacci.java

import javax.swing.JOptionPane;

public class Fibonacci {

    public static void main(String[] args) {

            int off = 0, soma = 0, somaAnt = 0;
            String seq = "";
            String limite = JOptionPane.showInputDialog("Insira o limite");
            int limiteInt = Integer.parseInt(limite);

            for(int i=1; i<limiteInt; i++) {

                    if(i == 1) {
                        somaAnt = 0;
                        seq += somaAnt + ", ";
                        continue;
                    }

                    if(i == 2) {
                        soma = 1;
                        seq += soma + ", ";
                        continue;
                    }

                    off = soma + somaAnt;
                    somaAnt = soma;
                    soma = off;

                    seq += off + ", ";


            }

            JOptionPane.showMessageDialog(null, seq);
    }
}