--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/io/Serializable/longString/LongString.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,84 @@
+/*
+ * Copyright 1999 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 4217676
+ * @summary Ensure that object streams support serialization of long strings
+ *          (strings whose UTF representation > 64k in length)
+ */
+
+import java.io.*;
+import java.util.*;
+
+public class LongString {
+    public static void main(String[] args) throws Exception {
+        Random rand = new Random(System.currentTimeMillis());
+        ByteArrayOutputStream bout;
+        ByteArrayInputStream bin;
+        ObjectOutputStream oout;
+        ObjectInputStream oin;
+        FileInputStream fin;
+        File mesgf;
+
+        // generate a long random string
+        StringBuffer sbuf = new StringBuffer();
+        for (int i = 0; i < 100000; i++)
+            sbuf.append((char) rand.nextInt(Character.MAX_VALUE + 1));
+        String str = sbuf.toString();
+
+        // write and read long string
+        bout = new ByteArrayOutputStream();
+        oout = new ObjectOutputStream(bout);
+        oout.writeObject(str);
+        oout.flush();
+        bin = new ByteArrayInputStream(bout.toByteArray());
+        oin = new ObjectInputStream(bin);
+        String strcopy = (String) oin.readObject();
+        if (! str.equals(strcopy))
+            throw new Error("deserialized long string not equal to original");
+
+        // test backwards compatibility
+        String mesg = "Message in golden file";
+        bout = new ByteArrayOutputStream();
+        oout = new ObjectOutputStream(bout);
+        oout.writeObject(mesg);
+        oout.flush();
+        byte[] buf1 = bout.toByteArray();
+
+        mesgf = new File(System.getProperty("test.src", "."), "mesg.ser");
+        fin = new FileInputStream(mesgf);
+        bout = new ByteArrayOutputStream();
+        while (fin.available() > 0)
+            bout.write(fin.read());
+        byte[] buf2 = bout.toByteArray();
+
+        if (! Arrays.equals(buf1, buf2))
+            throw new Error("incompatible string format (write)");
+
+        fin = new FileInputStream(mesgf);
+        oin = new ObjectInputStream(fin);
+        String mesgcopy = (String) oin.readObject();
+        if (! mesg.equals(mesgcopy))
+            throw new Error("incompatible string format (read)");
+    }
+}