1 /* 2 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 import java.io.IOException; 25 import java.io.InputStream; 26 import java.lang.module.ModuleReader; 27 import java.lang.module.ModuleReference; 28 import java.lang.module.ResolvedModule; 29 import java.lang.reflect.Layer; 30 import java.net.URL; 31 import java.util.Enumeration; 32 33 /** 34 * Usage: Main $MODULE 35 * 36 * Finds $MODULE in the boot layer and then tests that it can locate every 37 * resource in the module content (JAR file). 38 */ 39 40 public class Main { 41 42 static void testFind(String name) throws Exception { 43 // getResource 44 URL url = Main.class.getClassLoader().getResource(name); 45 if (url == null) 46 throw new RuntimeException("Unable to locate: " + name); 47 System.out.println(name + " => " + url); 48 49 // getResources 50 Enumeration<URL> urls = Main.class.getClassLoader().getResources(name); 51 if (!urls.hasMoreElements()) 52 throw new RuntimeException("Unable to locate: " + name); 53 URL first = urls.nextElement(); 54 if (!first.toURI().equals(url.toURI())) 55 throw new RuntimeException("found " + first + " ???"); 56 57 // getResourceAsStream 58 if (!url.toString().endsWith("/")) { 59 InputStream in = Main.class.getClassLoader().getResourceAsStream(name); 60 if (in == null) 61 throw new RuntimeException("Unable to locate: " + name); 62 in.close(); 63 } 64 } 65 66 static void testFindUnchecked(String name) { 67 try { 68 testFind(name); 69 } catch (Exception e) { 70 throw new RuntimeException(e); 71 } 72 } 73 74 public static void main(String[] args) throws Exception { 75 String mn = args[0]; 76 77 ModuleReference mref = Layer.boot() 78 .configuration() 79 .findModule(mn) 80 .map(ResolvedModule::reference) 81 .orElseThrow(() -> new RuntimeException(mn + " not resolved!!")); 82 83 try (ModuleReader reader = mref.open()) { 84 reader.list().forEach(name -> { 85 testFindUnchecked(name); 86 87 // if the resource is a directory then find without trailing slash 88 if (name.endsWith("/")) { 89 testFindUnchecked(name.substring(0, name.length() - 1)); 90 } 91 }); 92 } 93 } 94 }