Here you can find the source of checkPhone(String phone)
public static boolean checkPhone(String phone)
//package com.java2s; import java.util.regex.Matcher; import java.util.regex.Pattern; public class Main { public static boolean checkPhone(String phone) { Pattern pattern = Pattern.compile("^13/d{9}||15[8,9]/d{8}$"); Pattern p = Pattern .compile("^((13[0-9])|(15[^4,\\D])|(18[0,5-9]))\\d{8}$"); Matcher matcher = p.matcher(phone); if (matcher.matches()) { return true; }/*w ww. j av a2 s . com*/ return false; } }