Java tutorial
//package com.java2s; /** * This file is part of MythTV Android Frontend * * MythTV Android Frontend is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * MythTV Android Frontend is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with MythTV Android Frontend. If not, see <http://www.gnu.org/licenses/>. * * This software can be found at <https://github.com/MythTV-Clients/MythTV-Android-Frontend/> */ public class Main { private static String formatChannelNumber(String value) { if (null == value || "".equals(value)) { return null; } char delimiter = '_'; for (char c : value.toCharArray()) { String test = String.valueOf(c); if (!test.matches("\\d")) { delimiter = c; } } value = value.replace(delimiter, '.'); return value; } }