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diff --git a/test/java/net/URLConnection/RequestPropertyValues.java b/test/java/net/URLConnection/RequestPropertyValues.java
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+/*
+ * Copyright 2002-2006 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.
+ *
+ * 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.
+ */
+
+/*
+ * @test
+ * @bug 4644775 6230836
+ * @summary Test URLConnection Request Proterties
+ */
+
+import java.net.URL;
+import java.net.URLConnection;
+
+/**
+ * Part1:
+ *   bug 4644775: Unexpected NPE in setRequestProperty(key, null) call
+ * Part2:
+ *   bug 6230836: A few methods of class URLConnection implemented incorrectly
+ */
+
+public class RequestPropertyValues {
+
+    public static void main(String[] args) throws Exception {
+        part1();
+        part2();
+    }
+
+    public static void part1() throws Exception {
+        URL[] urls = { new URL("http://localhost:8088"),
+                        new URL("file:/etc/passwd"),
+                        new URL("ftp://foo:bar@foobar.com/etc/passwd"),
+                        new URL("jar:http://foo.com/bar.html!/foo/bar")
+                    };
+
+        boolean failed = false;
+
+        for (int proto = 0; proto < urls.length; proto++) {
+            URLConnection uc = (URLConnection) urls[proto].openConnection();
+            try {
+                uc.setRequestProperty("TestHeader", null);
+            } catch (NullPointerException npe) {
+                System.out.println("setRequestProperty is throwing NPE" +
+                                " for url: " + urls[proto]);
+                failed = true;
+            }
+            try {
+                uc.addRequestProperty("TestHeader", null);
+            } catch (NullPointerException npe) {
+                System.out.println("addRequestProperty is throwing NPE" +
+                                " for url: " + urls[proto]);
+                failed = true;
+            }
+        }
+        if (failed) {
+            throw new Exception("RequestProperty setting/adding is" +
+                                " throwing NPE for null values");
+        }
+    }
+
+    public static void part2() throws Exception {
+        URL url = null;
+        String[] goodKeys = {"", "$", "key", "Key", " ", "    "};
+        String[] goodValues = {"", "$", "value", "Value", " ", "    "};
+
+        URLConnection conn = getConnection(url);
+
+        for (int i = 0; i < goodKeys.length; ++i) {
+            for (int j = 0; j < goodValues.length; ++j) {
+                // If a property with the key already exists, overwrite its value with the new value
+                conn.setRequestProperty(goodKeys[i], goodValues[j]);
+                String value = conn.getRequestProperty(goodKeys[i]);
+
+                if (!((goodValues[j] == null && value == null) || (value != null && value.equals(goodValues[j]))))
+                    throw new RuntimeException("Method setRequestProperty(String,String) works incorrectly");
+            }
+        }
+    }
+
+    static URLConnection getConnection(URL url) {
+        return new DummyURLConnection(url);
+    }
+
+    static class DummyURLConnection extends URLConnection {
+
+        DummyURLConnection(URL url) {
+            super(url);
+        }
+
+        public void connect() {
+            connected = true;
+        }
+    }
+
+}