diff -r 27af159d6518 o.n.bootstrap/test/unit/src/org/netbeans/URLsAreEqualTest.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/o.n.bootstrap/test/unit/src/org/netbeans/URLsAreEqualTest.java	Tue Apr 19 12:23:42 2011 +0200
@@ -0,0 +1,81 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2011 Oracle and/or its affiliates. All rights reserved.
+ *
+ * Oracle and Java are registered trademarks of Oracle and/or its affiliates.
+ * Other names may be trademarks of their respective owners.
+ *
+ * The contents of this file are subject to the terms of either the GNU
+ * General Public License Version 2 only ("GPL") or the Common
+ * Development and Distribution License("CDDL") (collectively, the
+ * "License"). You may not use this file except in compliance with the
+ * License. You can obtain a copy of the License at
+ * http://www.netbeans.org/cddl-gplv2.html
+ * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
+ * specific language governing permissions and limitations under the
+ * License.  When distributing the software, include this License Header
+ * Notice in each file and include the License file at
+ * nbbuild/licenses/CDDL-GPL-2-CP.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the GPL Version 2 section of the License file that
+ * accompanied this code. If applicable, add the following below the
+ * License Header, with the fields enclosed by brackets [] replaced by
+ * your own identifying information:
+ * "Portions Copyrighted [year] [name of copyright owner]"
+ *
+ * If you wish your version of this file to be governed by only the CDDL
+ * or only the GPL Version 2, indicate your decision by adding
+ * "[Contributor] elects to include this software in this distribution
+ * under the [CDDL or GPL Version 2] license." If you do not indicate a
+ * single choice of license, a recipient has the option to distribute
+ * your version of this file under either the CDDL, the GPL Version 2 or
+ * to extend the choice of license to its licensees as provided above.
+ * However, if you add GPL Version 2 code and therefore, elected the GPL
+ * Version 2 license, then the option applies only if the new code is
+ * made subject to such option by the copyright holder.
+ *
+ * Contributor(s):
+ *
+ * Portions Copyrighted 2011 Sun Microsystems, Inc.
+ */
+package org.netbeans;
+
+import java.io.File;
+import java.net.URL;
+import java.net.URLConnection;
+import java.util.Collections;
+import org.netbeans.junit.NbTestCase;
+import org.openide.util.test.TestFileUtils;
+
+/**
+ *
+ * @author Jaroslav Tulach <jtulach@netbeans.org>
+ */
+public class URLsAreEqualTest extends NbTestCase {
+    public URLsAreEqualTest(String n) {
+        super(n);
+    }
+    
+    public void testURLsAreEqual() throws Exception {
+        File jar = new File(getWorkDir(), "default-package-resource.jar");
+        
+        URL orig = new URL("jar:" + jar.toURI() + "!/package/resource.txt");
+        URLConnection conn = orig.openConnection();
+        assertFalse("JDK connection: " + conn, conn.getClass().getName().startsWith("org.netbeans"));
+        
+        
+        TestFileUtils.writeZipFile(jar, "package/resource.txt:content");
+        JarClassLoader jcl = new JarClassLoader(Collections.singletonList(jar), new ProxyClassLoader[0]);
+
+        URL u = jcl.getResource("package/resource.txt");
+        assertNotNull("Resource found", u);
+        URLConnection uC = u.openConnection();
+        assertTrue("Our connection: " + uC, uC.getClass().getName().startsWith("org.netbeans"));
+
+
+
+        assertEquals("Both URLs are equal", u, orig);
+        assertEquals("Equality is symetrical", orig, u);
+    }
+}