Java tutorial
//package com.java2s; import java.util.regex.Matcher; import java.util.regex.Pattern; public class Main { public static boolean isMobilePhoneNO(String mobiles) { boolean flag = false; try { Pattern p = Pattern.compile("^(1[0-9]{10})$"); Matcher m = p.matcher(mobiles); flag = m.matches(); } catch (Exception e) { flag = false; e.printStackTrace(); } return flag; } }