Java tutorial
//package com.java2s; import java.util.regex.Matcher; import java.util.regex.Pattern; public class Main { public static boolean isPhoneNum(String num) { Pattern pattern = Pattern.compile("^((13[0-9])|(15[0-9])|(18[0-9])|(147)|(17[0|6|7|8]))\\d{8}$"); Matcher matcher = pattern.matcher(num); return matcher.matches(); } }