Here you can find the source of isValidEmail(String inputStr)
public static boolean isValidEmail(String inputStr)
//package com.java2s; /**/*from www . jav a2 s .co m*/ * Copyright 2013 ?????? * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import java.util.regex.Matcher; import java.util.regex.Pattern; public class Main { public static boolean isValidEmail(String inputStr) { boolean rtn = false; if (inputStr == null) { return rtn; } String regex = "^[_a-z0-9-]+(.[_a-z0-9-]+)*@(?:\\w+\\.)+\\w+$"; Pattern p = Pattern.compile(regex); Matcher m = p.matcher(inputStr); if (m.matches()) { rtn = true; } return rtn; } }