Here you can find the source of getResource(final String res)
public static URL getResource(final String res)
//package com.java2s; /**//from w w w. j av a 2s. c o m Aedict - an EDICT browser for Android Copyright (C) 2009 Martin Vysny 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 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ import java.net.URL; public class Main { public static URL getResource(final String res) { final URL edictGz = Thread.currentThread().getContextClassLoader().getResource(res); if (edictGz == null) { throw new AssertionError("The " + res + " resource is missing"); } return edictGz; } }