Here you can find the source of fileToURL(File file)
public static URL fileToURL(File file) throws IOException
//package com.java2s; /*/* w ww. java 2s . co m*/ * This file is part of the Jose Project * see http://jose-chess.sourceforge.net/ * (c) 2002-2006 Peter Sch?fer * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * */ import java.io.File; import java.io.IOException; import java.net.URL; public class Main { public static URL fileToURL(File file) throws IOException { file = file.getCanonicalFile(); String s = file.getAbsolutePath(); s = s.replace('\\', '/'); if (!s.startsWith("/")) s = "/" + s; if (!s.endsWith("/") && file.isDirectory()) s = s + "/"; return new URL("file", "", s); } }