package com.company;

import java.util.Scanner;

/*
Program reads User input year.
Outputs year in proper format.
 */

public class CurrentYear {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);

        System.out.print("Input Valid Year): ");

        String year = input.nextLine();
 /*
        What if the user inputs a word or sentence?
        We need to return a pretty error message and not have the program stop without explaining the issue...
         */
        int x = 0;
        int yearInt = 0;
        try{ //tries code that may fail without stopping program.
             yearInt = Integer.parseInt(year);
            //Catches all NumberFormatExceptions but not other errors
        } catch(NumberFormatException e) {
            //Fix problem
            x = 1;
        }
        if(x == 1) // returns error message.
        {
            System.out.println("Input a number.");
            System.exit(2);
        }

        if(year.length() == 4)
        {
            //int yearInt = Integer.parseInt(year);
            System.out.print(yearInt);
        }
        if(year.length() == 2)
        {
            //int yearInt = Integer.parseInt(year);
            System.out.print(yearInt+2000);
        }
        if((year.length() != 4) && (year.length() != 2))
        {
            System.out.print("Year not valid.");
        }


    }
}