Java tutorial
//package com.java2s; import java.util.regex.Matcher; import java.util.regex.Pattern; public class Main { public static boolean isMatchEmail(String strEmail) { String strPattern = "^\\s*\\w+(?:\\.{0,1}[\\w-]+)*@[a-zA-Z0-9]+(?:[-.][a-zA-Z0-9]+)*\\.[a-zA-Z]+\\s*$"; Pattern p = Pattern.compile(strPattern); Matcher m = p.matcher(strEmail); return m.matches(); } }