1 /*
   2  * Copyright (c) 2005, 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 /* @test
  25  * @bug 6349735
  26  * @summary  Internal API for closing jar files belonging to URLClassLoader instances
  27  */
  28 
  29 import java.io.*;
  30 import java.net.*;
  31 import java.util.*;
  32 
  33 public class Test {
  34 
  35     static File copy (File src, String destDir) throws Exception {
  36         FileInputStream fis = new FileInputStream (src);
  37         File dest = new File (destDir, src.getName());
  38         FileOutputStream fos = new FileOutputStream (dest);
  39         byte buf[] = new byte [1024];
  40         int c;
  41         while ((c=fis.read(buf)) != -1) {
  42             fos.write (buf, 0, c);
  43         }
  44         fis.close();
  45         fos.close();
  46         return dest;
  47     }
  48 
  49     public static void main(String[] args) throws Exception {
  50         String srcPath = System.getProperty("test.src");
  51         String destPath = System.getProperty("test.classes");
  52         if (destPath == null || "".equals(destPath)) {
  53             throw new RuntimeException ("Not running test");
  54         }
  55         File file = new File (srcPath, "test.jar");
  56         file = copy (file, destPath);
  57         URL url = file.toURL();
  58         URLClassLoader loader = new URLClassLoader (new URL [] {url});
  59         Class clazz = Class.forName ("Foo", true,  loader);
  60         Object obj = clazz.newInstance();
  61         List<String> jarsclosed = new LinkedList<String>();
  62         sun.misc.ClassLoaderUtil.releaseLoader (loader, jarsclosed);
  63         for (String jar: jarsclosed) {
  64             System.out.println ("Successfully closed " + jar);
  65         }
  66         if (!file.delete()) {
  67             throw new RuntimeException ("failed to delete jar file");
  68         }
  69     }
  70 }