Fibonacci Number

Problem statement:
Given a number n, print n-th Fibonacci Number.

Input : n = 2 

Output : 1 

Input : n = 9 

Output : 34

public class FibonacciSeries {
    static int fib(int n) {
        if (n <= 1)
            return n;
        return fib(n - 1) + fib(n - 2);
    }
    public static void main(String args[]) {
        int n = 9;
        System.out.println(fib(n));
    }
}

Output:

34