Helper

import java.util.Scanner;

public class Helper {
    public  static int valEnteroPositivo(Scanner sc, String message) {
        int num;
        String reply;
        while(true) {
            try {
                do {
                System.out.println(message);
                reply=sc.nextLine();
                num=Integer.parseInt(reply);
                if(num>0) {
                    return num;
                }else {
                    System.out.println("Error el numero entero debe ser positivo...");
                }
                }while(num<0);
                break;
            }
            catch (Exception e) {
                System.out.println("Error debe ingresar un numero entero....");
            }
        }
        return num;
    }

    public static char Caracterval(Scanner sc,String message) {
        char character;
        while (true) {
            try {
                System.out.print(message);
                character = sc.nextLine().charAt(0);
                break;
            }
            catch (Exception StringIndexOutOfBoundsException) {
                System.out.println("S\n ERROR de ingreso ");
            }
        }
        return character;
    }


    public static char Validacionrst(Scanner sc, String message)  {
        char rta;
        do  {
            rta=Caracterval(sc,message);
            if  ( rta!='s'  & rta!='S'  & rta!='N'  & rta!='n' )  {
                System.out.println("Error !! Ingrese S o N");               }
        } while  ( rta!='s'  & rta!='S' & rta!='N'  & rta!='n' );
        return rta ;
    }

    public static int valEntero(Scanner entrada, String message) {
        int num;
        String reply;
        while(true) {
            try {
                System.out.println(message);
                reply=entrada.nextLine();
                num=Integer.parseInt(reply);
                break;
            }
            catch (Exception e) {
                System.out.println("Error....");
            }
        }
        return num;
    }
}