Here you can find the source of toURLs(String[] classPath)
public static URL[] toURLs(String[] classPath)
//package com.java2s; /******************************************************************************************* * Copyright (c) 2016, zzg.zhou(11039850@qq.com) * // ww w. j a v a 2 s . c o m * Monalisa is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * You should have received a copy of the GNU Lesser General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. *******************************************************************************************/ import java.io.File; import java.net.MalformedURLException; import java.net.URL; import java.util.ArrayList; import java.util.List; public class Main { public static URL[] toURLs(String[] classPath) { List<URL> urls = new ArrayList<URL>(); try { for (String x : classPath) { File file = new File(x); if (file.exists()) { urls.add(file.toURI().toURL()); } } return urls.toArray(new URL[0]); } catch (MalformedURLException e) { throw new RuntimeException(e); } } }