DocumentationProgramsSponsorsPlayground

Java program To Find The Nth Fibonacci Number

This code takes the value of N from user and displays the Nth number of the Fibonacci Series.

N is a variable which inputs a integer value using System.in.

To understand this example, you should have the knowledge of the following Java programming topics:

To find the Nth Fibonacci number

A java program to find the Nth Fibonacci number.

Java Code

import java.util.Scanner;

public class Fibonacci {
    public static void main(String[] args) {
        long n, term1=0, term2=1, i, fib=1 ;
        Scanner sc = new Scanner(System.in) ;
        System.out.print("Enter the value of n: ") ;
        n = sc.nextInt() ;
        if (n == 1) {
            fib = term1;
        }
        else if (n == 2) {
            fib = term2;
        }
        else {
            for (i = 3 ; i <= n ; i ++)
            {
                fib = term1 + term2;
                term1 = term2;
                term2 = fib;
            }
        }
        System.out.println("The Nth Fibonacci Number is " + fib) ;
        sc.close();
    }
}

Output 1

Enter the value of n: 69
The Nth Fibonacci Number is 72723460248141

Output 2

Enter the value of n: 12
The Nth Fibonacci Number is 89

Java Program to Calculate Factorial of a Number

Learn to calculate factorial of a number in Java using loops and recursion. Complete program with examples showing both iterative and recursive approaches.

Java Pattern Printing Programs

Master nested loops and logical thinking with comprehensive pattern printing examples including stars, numbers, alphabets, and complex geometric designs.