even.java

import java.util.Scanner;
import java.io.*;
class even 
{
 public static void main(String[] args){
 int my_input, i, sum;
 System.out.println("Required packages have been imported");
 Scanner my_scanner = new Scanner(System.in);
 System.out.println("A reader object has been defined ");
 System.out.println("Enter the value of N: ");
 my_input = my_scanner.nextInt();
 int fabonacci[] = new int[2 * my_input + 1];
 fabonacci[0] = 0;
 fabonacci[1] = 1;
 sum = 0;
 for (i = 2; i <= 2 * my_input; i++) {
 fabonacci[i] = fabonacci[i - 1] + fabonacci[i - 2];
 if (i % 2 == 0)
 sum += fabonacci[i];
 }
 System.out.printf("Even sum of fibonacci series till number %d is %d" ,
my_input, sum);
 }
}