/*
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 */
package feladat42;
import java.util.Scanner;
/**
 *
 * @author Rendszergazdai
 */
public class Feladat42 {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int evszam = 0, honap = 0, nap = 0;
        while(true){
                System.out.println("Évszám:");
                evszam = scan.nextInt();
            try{
                evBeker(evszam);
                break;
            }
            catch(evszamException e){
                System.out.println(e);
            }

        }
        while(true){
                System.out.println("Hónap:");
                honap = scan.nextInt();
            try{
                honapBeker(honap);
                break;
            }
            catch(honapException e){
                System.out.println(e);
            }

        }
        while(true){
                System.out.println("Nap:");
                nap = scan.nextInt();
            try{
                napBeker(honap, nap);
                break;
            }
            catch(napException e){
                System.out.println(e);
            }
        }
    }

    public static int evBeker(int evszam) throws evszamException{
        if(evszam >= 1900 && evszam <= 2017){
            System.out.println("helyes évszám");
            return evszam;
        }else{
            throw new evszamException("Helytelen évszám");
        }
    }

    public static int honapBeker(int honap) throws honapException{
       if(honap >= 1 && honap <= 12){
            System.out.println("helyes honap");
            return honap;
        }else{
            throw new honapException("Helytelen hónap");
        }
    }

    public static int napBeker(int honap, int nap) throws napException{
        int[] honapHossz = {31,28,31,30,31,30,31,31,30,31,30,31};
        if(honapHossz[honap-1] >= nap && 1 <= nap){
            System.out.println("Helyes nap");
            return nap;
        }else{
            throw new napException("Helytelen nap.");
        }

    }

}