Package renaming - missed the pre-written files in the previous commit.
diff --git a/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/util/HexString.java b/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/util/HexString.java
new file mode 100644
index 0000000..d812236
--- /dev/null
+++ b/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/util/HexString.java
@@ -0,0 +1,98 @@
+/**
+ *    Copyright (c) 2008 The Board of Trustees of The Leland Stanford Junior
+ *    University
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *    not use this file except in compliance with the License. You may obtain
+ *    a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *    License for the specific language governing permissions and limitations
+ *    under the License.
+ **/
+
+package org.projectfloodlight.openflow.util;
+
+import java.math.BigInteger;
+
+import org.projectfloodlight.openflow.types.U8;
+
+public class HexString {
+    /**
+     * Convert a string of bytes to a ':' separated hex string
+     *
+     * @param bytes
+     * @return "0f:ca:fe:de:ad:be:ef"
+     */
+    public static String toHexString(final byte[] bytes) {
+        int i;
+        String ret = "";
+        String tmp;
+        for (i = 0; i < bytes.length; i++) {
+            if (i > 0)
+                ret += ":";
+            tmp = Integer.toHexString(U8.f(bytes[i]));
+            if (tmp.length() == 1)
+                ret += "0";
+            ret += tmp;
+        }
+        return ret;
+    }
+
+    public static String toHexString(final long val, final int padTo) {
+        char arr[] = Long.toHexString(val).toCharArray();
+        String ret = "";
+        // prepend the right number of leading zeros
+        int i = 0;
+        for (; i < (padTo * 2 - arr.length); i++) {
+            ret += "0";
+            if ((i % 2) == 1)
+                ret += ":";
+        }
+        for (int j = 0; j < arr.length; j++) {
+            ret += arr[j];
+            if ((((i + j) % 2) == 1) && (j < (arr.length - 1)))
+                ret += ":";
+        }
+        return ret;
+    }
+
+    public static String toHexString(final long val) {
+        return toHexString(val, 8);
+    }
+
+    /**
+     * Convert a string of hex values into a string of bytes
+     *
+     * @param values
+     *            "0f:ca:fe:de:ad:be:ef"
+     * @return [15, 5 ,2, 5, 17]
+     * @throws NumberFormatException
+     *             If the string can not be parsed
+     */
+    public static byte[] fromHexString(final String values) throws NumberFormatException {
+        String[] octets = values.split(":");
+        byte[] ret = new byte[octets.length];
+
+        for (int i = 0; i < octets.length; i++) {
+            if (octets[i].length() > 2)
+                throw new NumberFormatException("Invalid octet length");
+            ret[i] = Integer.valueOf(octets[i], 16).byteValue();
+        }
+        return ret;
+    }
+
+    public static long toLong(final String values) throws NumberFormatException {
+        // Long.parseLong() can't handle HexStrings with MSB set. Sigh.
+        BigInteger bi = new BigInteger(values.replaceAll(":", ""), 16);
+        if (bi.bitLength() > 64)
+            throw new NumberFormatException("Input string too big to fit in long: "
+                    + values);
+        return bi.longValue();
+    }
+
+}