Java tutorial
//package com.java2s; public class Main { public static String getStandardMobileFormat(String actualNumber) { String formattedNumber = null; if (actualNumber != null) { formattedNumber = actualNumber.replace("-", ""); if (!formattedNumber.startsWith("+91")) { if (formattedNumber.startsWith("+1")) { formattedNumber.replace("+", "+91"); } else if (formattedNumber.startsWith("0")) { formattedNumber = "+91" + formattedNumber.substring(1);// ignore 0 and start with +91 } else { formattedNumber = "+91" + formattedNumber; } } } return formattedNumber; } }