Java tutorial
//package com.java2s; /* * Copyright (C) 2014 The AppCan Open Source Project. * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * This program 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 Lesser General Public License for more details. * You should have received a copy of the GNU Lesser General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. * */ import java.util.regex.Matcher; import java.util.regex.Pattern; public class Main { public static boolean isPhoneNumber(String phoneNum) { String expression = "^((13[0-9])|(15[^4,\\D])|(18[0,5-9]))\\d{8}$"; CharSequence inputStr = phoneNum; Pattern pattern = Pattern.compile(expression); Matcher matcher = pattern.matcher(inputStr); if (matcher.matches()) { return true; } return false; } }