Fibonacci Series in Java

import java.util.Scanner; 
class Fabonacci
{
    public static void main(String[] args)
    {
        // declare variable
        int FirstNumber,SecondNumber;
        // initialize variable
        FirstNumber = 1;
        SecondNumber = 1;
        //taking input from user using Scanner class
        System.out.println("Plase Enter Number For Generate Fabonacci Series");
        Scanner scan = new Scanner(System.in);
        int Val = scan.nextInt();
        while(FirstNumber < Val)
        {
            System.out.println(FirstNumber);
            FirstNumber = FirstNumber + SecondNumber;
            SecondNumber = FirstNumber - SecondNumber;
        }
    }
}