--- a/make/sun/net/FILES_java.gmk	Thu Aug 06 19:01:59 2009 -0700
+++ b/make/sun/net/FILES_java.gmk	Fri Aug 07 10:50:26 2009 +0100
@@ -41,6 +41,7 @@
 	sun/net/NetProperties.java \
 	sun/net/NetHooks.java \
 	sun/net/util/IPAddressUtil.java \
+	sun/net/util/URLUtil.java \
 	sun/net/dns/ResolverConfiguration.java \
 	sun/net/dns/ResolverConfigurationImpl.java \
 	sun/net/ftp/FtpClient.java \

--- a/src/share/classes/sun/misc/URLClassPath.java	Thu Aug 06 19:01:59 2009 -0700
+++ b/src/share/classes/sun/misc/URLClassPath.java	Fri Aug 07 10:50:26 2009 +0100
@@ -51,6 +51,7 @@
 import java.security.PrivilegedExceptionAction;
 import java.security.cert.Certificate;
 import sun.misc.FileURLMapper;
+import sun.net.util.URLUtil;
 
 /**
  * This class is used to maintain a search path of URLs for loading classes
@@ -80,7 +81,7 @@
     ArrayList<Loader> loaders = new ArrayList<Loader>();
 
     /* Map of each URL opened to its corresponding Loader */
-    HashMap<URL, Loader> lmap = new HashMap<URL, Loader>();
+    HashMap<String, Loader> lmap = new HashMap<String, Loader>();
 
     /* The jar protocol handler to use when creating new URLs */
     private URLStreamHandler jarHandler;
@@ -317,7 +318,8 @@
             // Skip this URL if it already has a Loader. (Loader
             // may be null in the case where URL has not been opened
             // but is referenced by a JAR index.)
-            if (lmap.containsKey(url)) {
+            String urlNoFragString = URLUtil.urlNoFragString(url);
+            if (lmap.containsKey(urlNoFragString)) {
                 continue;
             }
             // Otherwise, create a new Loader for the URL.
@@ -336,7 +338,7 @@
             }
             // Finally, add the Loader to the search path.
             loaders.add(loader);
-            lmap.put(url, loader);
+            lmap.put(urlNoFragString, loader);
         }
         return loaders.get(index);
     }
@@ -576,7 +578,7 @@
         private JarIndex index;
         private MetaIndex metaIndex;
         private URLStreamHandler handler;
-        private HashMap<URL, Loader> lmap;
+        private HashMap<String, Loader> lmap;
         private boolean closed = false;
 
         /*
@@ -584,7 +586,7 @@
          * a JAR file.
          */
         JarLoader(URL url, URLStreamHandler jarHandler,
-                  HashMap<URL, Loader> loaderMap)
+                  HashMap<String, Loader> loaderMap)
             throws IOException
         {
             super(new URL("jar", "", -1, url + "!/", jarHandler));
@@ -663,8 +665,9 @@
                                         try {
                                             URL jarURL = new URL(csu, jarfiles[i]);
                                             // If a non-null loader already exists, leave it alone.
-                                            if (!lmap.containsKey(jarURL)) {
-                                                lmap.put(jarURL, null);
+                                            String urlNoFragString = URLUtil.urlNoFragString(jarURL);
+                                            if (!lmap.containsKey(urlNoFragString)) {
+                                                lmap.put(urlNoFragString, null);
                                             }
                                         } catch (MalformedURLException e) {
                                             continue;
@@ -806,7 +809,7 @@
             if (index == null)
                 return null;
 
-            HashSet<URL> visited = new HashSet<URL>();
+            HashSet<String> visited = new HashSet<String>();
             return getResource(name, check, visited);
         }
 
@@ -818,7 +821,7 @@
          * non-existent resource
          */
         Resource getResource(final String name, boolean check,
-                             Set<URL> visited) {
+                             Set<String> visited) {
 
             Resource res;
             Object[] jarFiles;
@@ -843,7 +846,8 @@
 
                     try{
                         url = new URL(csu, jarName);
-                        if ((newLoader = (JarLoader)lmap.get(url)) == null) {
+                        String urlNoFragString = URLUtil.urlNoFragString(url);
+                        if ((newLoader = (JarLoader)lmap.get(urlNoFragString)) == null) {
                             /* no loader has been set up for this jar file
                              * before
                              */
@@ -867,7 +871,7 @@
                             }
 
                             /* put it in the global hashtable */
-                            lmap.put(url, newLoader);
+                            lmap.put(urlNoFragString, newLoader);
                         }
                     } catch (java.security.PrivilegedActionException pae) {
                         continue;
@@ -879,7 +883,7 @@
                     /* Note that the addition of the url to the list of visited
                      * jars incorporates a check for presence in the hashmap
                      */
-                    boolean visitedURL = !visited.add(url);
+                    boolean visitedURL = !visited.add(URLUtil.urlNoFragString(url));
                     if (!visitedURL) {
                         try {
                             newLoader.ensureOpen();

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/classes/sun/net/util/URLUtil.java	Fri Aug 07 10:50:26 2009 +0100
@@ -0,0 +1,80 @@
+/*
+ * Copyright 2009 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+package sun.net.util;
+
+import java.net.URL;
+
+/**
+ * URL Utility class.
+ */
+public class URLUtil {
+    /**
+     * Returns a string form of the url suitable for use as a key in HashMap/Sets.
+     *
+     * The string form should be behave in the same manner as the URL when
+     * compared for equality in a HashMap/Set, except that no nameservice
+     * lookup is done on the hostname (only string comparison), and the fragment
+     * is not considered.
+     *
+     * @see java.net.URLStreamHandler.sameFile(java.net.URL)
+     */
+    public static String urlNoFragString(URL url) {
+        StringBuilder strForm = new StringBuilder();
+
+        String protocol = url.getProtocol();
+        if (protocol != null) {
+            /* protocol is compared case-insensitive, so convert to lowercase */
+            protocol = protocol.toLowerCase();
+            strForm.append(protocol);
+            strForm.append("://");
+        }
+
+        String host = url.getHost();
+        if (host != null) {
+            /* host is compared case-insensitive, so convert to lowercase */
+            host = host.toLowerCase();
+            strForm.append(host);
+
+            int port = url.getPort();
+            if (port == -1) {
+                /* if no port is specificed then use the protocols
+                 * default, if there is one */
+                port = url.getDefaultPort();
+            }
+            if (port != -1) {
+                strForm.append(":").append(port);
+            }
+        }
+
+        String file = url.getFile();
+        if (file != null) {
+            strForm.append(file);
+        }
+
+        return strForm.toString();
+    }
+}
+