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diff --git a/test/java/net/URLEncoder/SurrogatePairs.java b/test/java/net/URLEncoder/SurrogatePairs.java
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+/*
+ * Copyright 2001 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 4396708
+ * @summary Test URL encoder and decoder on a string that contains
+ * surrogate pairs.
+ *
+ */
+
+import java.io.*;
+import java.net.*;
+
+/*
+ * Surrogate pairs are two character Unicode sequences where the first
+ * character lies in the range [d800, dbff] and the second character lies
+ * in the range [dc00, dfff]. They are used as an escaping mechanism to add
+ * 1M more characters to Unicode.
+ */
+public class SurrogatePairs {
+
+    static String[] testStrings = {"\uD800\uDC00",
+                                   "\uD800\uDFFF",
+                                   "\uDBFF\uDC00",
+                                   "\uDBFF\uDFFF",
+                                   "1\uDBFF\uDC00",
+                                   "@\uDBFF\uDC00",
+                                   "\uDBFF\uDC001",
+                                   "\uDBFF\uDC00@",
+                                   "\u0101\uDBFF\uDC00",
+                                   "\uDBFF\uDC00\u0101"
+    };
+
+    static String[] correctEncodings = {"%F0%90%80%80",
+                                        "%F0%90%8F%BF",
+                                        "%F4%8F%B0%80",
+                                        "%F4%8F%BF%BF",
+                                        "1%F4%8F%B0%80",
+                                        "%40%F4%8F%B0%80",
+                                        "%F4%8F%B0%801",
+                                        "%F4%8F%B0%80%40",
+                                        "%C4%81%F4%8F%B0%80",
+                                        "%F4%8F%B0%80%C4%81"
+    };
+
+    public static void main(String[] args) throws Exception {
+
+        for (int i=0; i < testStrings.length; i++) {
+            test(testStrings[i], correctEncodings[i]);
+        }
+    }
+
+    private static void test(String str, String correctEncoding)
+        throws Exception {
+
+        System.out.println("Unicode bytes of test string are: "
+                           + getHexBytes(str));
+
+        String encoded = URLEncoder.encode(str, "UTF-8");
+
+        System.out.println("URLEncoding is: " + encoded);
+
+        if (encoded.equals(correctEncoding))
+            System.out.println("The encoding is correct!");
+        else {
+            throw new Exception("The encoding is incorrect!" +
+                                " It should be " + correctEncoding);
+        }
+
+        String decoded = URLDecoder.decode(encoded, "UTF-8");
+
+        System.out.println("Unicode bytes for URLDecoding are: "
+                           + getHexBytes(decoded));
+
+        if (str.equals(decoded))
+            System.out.println("The decoding is correct");
+        else {
+            throw new Exception("The decoded is not equal to the original");
+        }
+        System.out.println("---");
+    }
+
+    private static String getHexBytes(String s) throws Exception {
+        StringBuffer sb = new StringBuffer();
+        for (int i = 0; i < s.length(); i++) {
+
+            int a = s.charAt(i);
+            int b1 = (a >>8) & 0xff;
+            int b2 = (byte)a;
+            int b11 = (b1>>4) & 0x0f;
+            int b12 = b1 & 0x0f;
+            int b21 = (b2 >>4) & 0x0f;
+            int b22 = b2 & 0x0f;
+
+            sb.append(Integer.toHexString(b11));
+            sb.append(Integer.toHexString(b12));
+            sb.append(Integer.toHexString(b21));
+            sb.append(Integer.toHexString(b22));
+            sb.append(' ');
+        }
+        return sb.toString();
+    }
+
+}