Here you can find the source of sanitizeToString(String origMSISDN)
public static final String sanitizeToString(String origMSISDN)
//package com.java2s; public class Main { public static final String sanitizeToString(String origMSISDN) { origMSISDN = origMSISDN.trim();/*from w w w.ja v a 2 s. c o m*/ return origMSISDN.startsWith("86") ? origMSISDN : "86" + origMSISDN; } }