--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/sun/util/calendar/zi/Checksum.java	Tue Feb 12 09:25:43 2013 -0800
@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2000, Oracle and/or its affiliates. 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.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+import java.util.zip.CRC32;
+
+/**
+ * Checksum provides methods for calculating a CRC32 value for a
+ * transitions table.
+ *
+ * @since 1.4
+ */
+public class Checksum extends CRC32
+{
+    /**
+     * Updates the CRC32 value from each byte of the given int
+     * value. The bytes are used in the big endian order.
+     * @param val the int value
+     */
+    public void update(int val) {
+        byte[] b = new byte[4];
+        b[0] = (byte)((val >>> 24) & 0xff);
+        b[1] = (byte)((val >>> 16) & 0xff);
+        b[2] = (byte)((val >>> 8) & 0xff);
+        b[3] = (byte)(val & 0xff);
+        update(b);
+    }
+
+    /**
+     * Updates the CRC32 value from each byte of the given long
+     * value. The bytes are used in the big endian order.
+     * @param val the long value
+     */
+    void update(long val) {
+        byte[] b = new byte[8];
+        b[0] = (byte)((val >>> 56) & 0xff);
+        b[1] = (byte)((val >>> 48) & 0xff);
+        b[2] = (byte)((val >>> 40) & 0xff);
+        b[3] = (byte)((val >>> 32) & 0xff);
+        b[4] = (byte)((val >>> 24) & 0xff);
+        b[5] = (byte)((val >>> 16) & 0xff);
+        b[6] = (byte)((val >>> 8) & 0xff);
+        b[7] = (byte)(val & 0xff);
+        update(b);
+    }
+}