1 /*

     2  * Copyright 2005 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any 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 }