java/api/fibonacci/Main.java

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;

class Main {
    public static void main(String[] args) {
        InputStreamReader inputStreamReader = new InputStreamReader(System.in);
        BufferedReader BufferedReader = new BufferedReader(inputStreamReader);

        try {
            System.out.printf("Ingresa el numero maximo fibonacci: ");
            String inputUser = BufferedReader.readLine();
            int inputUserToInt = Integer.parseInt(inputUser);
            
            Fibonacci fibonacci = new Fibonacci(inputUserToInt);

            fibonacci.calc();

        } catch (IOException e) {
            System.out.println("Ocurrio un error de entrada/salida:" + e.getMessage());
        } catch (NumberFormatException e) {
            System.out.println("Por favor, ingresa solo numeros validos.");
        }
    }
}

class Fibonacci {
    int end, a = 0, b = 1, c;

    Fibonacci(int num) {
        this.end = num;
    }

    public void calc() {
        for (int i = 0; i < end; i += 1) {
            System.out.printf("%d ", a);
            if (a == 0 || a == 1) {
                System.out.printf("%n\\o_o/ Soy un 1 o 0. Soy especial%n");
            }
            c = a + b;
            a = b;
            b = c;
        }
    }
}