Here you can find the source of sanitizeUrlWithoutProtocol(String url, String protocol)
public static String sanitizeUrlWithoutProtocol(String url, String protocol) throws IllegalArgumentException
//package com.java2s; /*/*from w w w . jav a 2 s . c o m*/ * Copyright 2011 Dan Bjorge * * 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. */ public class Main { /** * Sanitizes a given URL to NOT include a protocol prefix. Raises an error if this function * is given a URL with a protocol which is not the given one. * * Inputs may not be null. */ public static String sanitizeUrlWithoutProtocol(String url, String protocol) throws IllegalArgumentException { int i = url.indexOf("://"); if (i >= 0 && url.indexOf('/') - 1 == i) { if (!url.substring(0, i).equals(protocol)) { throw new IllegalArgumentException( "Invalid URL: Uses protocol " + url.substring(0, i) + ", but " + protocol + " required"); } return url.substring(i + 3); } return url; } }