package exam;

import java.util.Scanner;

public class UserInput {

	private static Scanner scan = new Scanner(System.in);

	public static int getInt() {
		return getInt("");
	}

	public static int getInt(String msg) {

		System.out.println(msg);

		if (scan.hasNextInt()) {
			return scan.nextInt();
		} else {
			scan.next();
			System.out.println("Niepoprawne dane");
		}

		return getInt(msg);

	}

	public static String getString(String msg) {
		System.out.println(msg);
		return scan.next();
	}

}