Java tutorial
//package com.java2s; import java.util.regex.Pattern; public class Main { public static boolean checkPhone(String phone) { if (phone.length() != 11) { return false; } else { Pattern p = Pattern.compile("^1[3|4|5|7|8]\\d{9}$"); if (p.matcher(phone).matches()) { return true; } else { return false; } } } }