Java Scanner Usage leerOpcion(String opciones, String msgUsr, String msgErr)

Description

leer Opcion

License

Apache License

Declaration

public static final char leerOpcion(String opciones, String msgUsr, String msgErr) 

Method Source Code

//package com.java2s;
/*/*from   w ww.  j a  v  a  2 s.c  o m*/
 * Copyright 2016 Jos? A. Pacheco Ondo?o - joanpaon@gmail.com.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.util.Scanner;

public class Main {
    public static final Scanner SCN = new Scanner(System.in, "ISO-8859-1");

    public static final char leerOpcion(String opciones, String msgUsr, String msgErr) {
        // Dato a introducir
        char dato = 0;

        // Proceso de lectura
        boolean lecturaOK = false;
        do {
            try {
                // Entrada dato
                System.out.print(msgUsr);
                dato = SCN.nextLine().charAt(0);

                // Analisis Dato
                if (opciones.contains(dato + "")) {
                    lecturaOK = true;
                } else {
                    System.out.println(msgErr);
                }
            } catch (Exception e) {
                System.out.println(msgErr);
            }
        } while (!lecturaOK);

        // Devolver dato
        return dato;
    }
}

Related

1. isNumeric(String str)
2. isValueValid(String value, String pattern)
3. isYes(String str)
4. iterate(final String node)
5. joinSqlStatements(Collection scripts)
6. leerTexto(String msgUsr)
7. listify(String s, String prefix, String... ignorelist)
8. listify(String s, String prefix, String... ignorelist)
9. loadElements(Scanner scan, int elementCount, int skipCount)