Java tutorial
//package com.java2s; import java.util.regex.Matcher; import java.util.regex.Pattern; public class Main { public static boolean isPhoneNumber(String str) { Pattern phone = Pattern.compile("^((13[0-9])|(15[^4,\\D])|(18[0,5-9]))\\d{8}$"); Matcher ma = phone.matcher(str); return ma.matches(); } }