Here you can find the source of makeURL(String url)
public static URL makeURL(String url)
//package com.java2s; /*//from w w w . j a v a 2 s . c om * The contents of this file are subject to the Mozilla Public * License Version 1.1 (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.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or * implied. See the License for the specific language governing * rights and limitations under the License. * * The Original Code is the Second Interpreter of Scheme Code (SISC). * * The Initial Developer of the Original Code is Scott G. Miller. * Portions created by Scott G. Miller are Copyright (C) 2000-2007 * Scott G. Miller. All Rights Reserved. * * Contributor(s): * Matthias Radestock * * Alternatively, the contents of this file may be used under the * terms of the GNU General Public License Version 2 or later (the * "GPL"), in which case the provisions of the GPL are applicable * instead of those above. If you wish to allow use of your * version of this file only under the terms of the GPL and not to * allow others to use your version of this file under the MPL, * indicate your decision by deleting the provisions above and * replace them with the notice and other provisions required by * the GPL. If you do not delete the provisions above, a recipient * may use your version of this file under either the MPL or the * GPL. */ import java.net.*; public class Main { public static URL makeURL(String url) { URL res = null; if (url == null) return res; try { res = new URL(url); } catch (MalformedURLException e) { try { res = new URL("file", null, url); } catch (MalformedURLException ee) { } } return res; } }