Java tutorial
//package com.java2s; import java.util.regex.Matcher; import java.util.regex.Pattern; public class Main { /** Validate email address **/ public static boolean validateEmail(String email) { Pattern p = Pattern.compile("[A-Z0-9._%+-]+@[A-Z0-9.-]+.[A-Z]{2,4}", Pattern.CASE_INSENSITIVE); Matcher m = p.matcher(email); return m.matches(); } }