Java tutorial
//package com.java2s; import java.util.regex.Matcher; import java.util.regex.Pattern; public class Main { private static final String PATTERN_EMAIL = "^[_A-Za-z0-9-\\+]+(\\.[_A-Za-z0-9-]+)*@" + "[A-Za-z0-9-]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$"; public static boolean validateEmail(String email) { Pattern pattern = Pattern.compile(PATTERN_EMAIL); Matcher matcher = pattern.matcher(email); return matcher.matches(); } }