Java tutorial
//package com.java2s; import java.util.regex.Matcher; import java.util.regex.Pattern; public class Main { public static boolean isMobileNumber(String mobile) { if (mobile.length() != 11) return false; // "^((\\d{7,8})|(0\\d{2,3}-\\d{7,8})|(1[34578]\\d{9}))$" Pattern p = Pattern.compile("^((1[3|5|8][0-9])|(14[5|7])|(17[0|1|6|7|8]))\\d{8}$"); Matcher m = p.matcher(mobile); return m.matches(); } }