fibonacci series program in java

Write a program to display fibonacci series 

Example : 0, 1, 1, 2, 3, 5, 8, 13, 21, ...

Number in series = addition of previous two number.

fibonacci series using temp variable

class FibonacciDemo { 
   public static void main(String[] args) {
    int limit = 6;
    int number1 = 0;
    int number2 = 1;
    int temp ;
    System.out.print(+number1);
    System.out.print(","+number2);   
    for (int i = 2; i < limit; i++) {
     temp = number1+ number2;
     System.out.print("," + temp);
     number1 = number2;
     number2 = temp;
    }
   }
}

Output: 

0,1,1,2,3,5

Fibonacci series using Array : 

Fibonacci series using Array

class FibonacciDemo { 
   public static void main(String[] args) {
      int limit = 6;
      int arr[] = new int[limit];
      arr[0] = 0;
      arr[1] = 1;
      for (int i = 2; i < limit; i++) {
       arr[i] = arr[i - 1] + arr[i - 2];
      
      for (int i = 0; i < limit; i++) {
       System.out.print(arr[i] + ",");
      }
   }
}

Find n'th number in Fibonacci series using Recursion : 

Fibonacci series using Recursion

class FibonacciDemo { 
   public static void main(String[] args) {
      System.out.println(fib(6));
   }

   static int fib(int n) {
      int result;
      if (n == 1)
       result = 0;
      else if (n == 2)
       result = 1;
      else
       result = fib(n - 1) + fib(n - 2);
      return result;
   }
}

Output : 5