Java tutorial
//package com.java2s; /** * Copyright (C) 2013-2014 EaseMob Technologies. All rights reserved. * <p/> * 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 final String regex = "^(https?|ftp|file|http)://[-a-zA-Z0-9@#/%?=~_|!:,.;]*[-a-zA-Z0-9@#/%=~_|]"; public static boolean isHttp(String url) { Pattern patt = Pattern.compile(regex); Matcher matcher = patt.matcher(url); return matcher.matches(); } }