fib.java

public class fib {
    public static int fib(int n) {
        if (n <= 1) {return n;}
        return fib(n-1) + fib(n-2);
    }

    public static void main(String[] args) {
       
        for (int i = 0; i < 36; i++)
            System.out.println("n = " + i + " => " + fib(i));
    }

}