diff --git a/src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/FontUnderline.java b/src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/FontUnderline.java
new file mode 100755
index 000000000..a78062b92
--- /dev/null
+++ b/src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/FontUnderline.java
@@ -0,0 +1,121 @@
+/* ====================================================================
+   Licensed to the Apache Software Foundation (ASF) under one or more
+   contributor license agreements.  See the NOTICE file distributed with
+   this work for additional information regarding copyright ownership.
+   The ASF licenses this file to You 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.apache.poi.ss.usermodel;
+
+/**
+ * the different types of possible underline formatting
+ *
+ * @author Gisella Bronzetti
+ */
+public enum FontUnderline {
+
+    /**
+     * Single-line underlining under each character in the cell.
+     * The underline is drawn through the descenders of
+     * characters such as g and p..
+     */
+    SINGLE(1),
+
+    /**
+     * Double-line underlining under each character in the
+     * cell. underlines are drawn through the descenders of
+     * characters such as g and p.
+     */
+    DOUBLE(2),
+
+    /**
+     * Single-line accounting underlining under each
+     * character in the cell. The underline is drawn under the
+     * descenders of characters such as g and p.
+     */
+    SINGLE_ACCOUNTING(3),
+
+    /**
+     * Double-line accounting underlining under each
+     * character in the cell. The underlines are drawn under
+     * the descenders of characters such as g and p.
+     */
+    DOUBLE_ACCOUNTING(4),
+
+    /**
+     * No underline.
+     */
+    NONE(5);
+
+    private int value;
+
+
+    private FontUnderline(int val) {
+        value = val;
+    }
+
+    public int getValue() {
+        return value;
+    }
+
+    public byte getByteValue() {
+        switch (this) {
+            case DOUBLE:
+                return Font.U_DOUBLE;
+            case DOUBLE_ACCOUNTING:
+                return Font.U_DOUBLE_ACCOUNTING;
+            case SINGLE_ACCOUNTING:
+                return Font.U_SINGLE_ACCOUNTING;
+            case NONE:
+                return Font.U_NONE;
+            case SINGLE:
+                return Font.U_SINGLE;
+            default:
+                return Font.U_SINGLE;
+        }
+    }
+
+    private static FontUnderline[] _table = new FontUnderline[6];
+    static {
+        for (FontUnderline c : values()) {
+            _table[c.getValue()] = c;
+        }
+    }
+
+    public static FontUnderline valueOf(int value){
+        return _table[value];
+    }
+
+    public static FontUnderline valueOf(byte value){
+        FontUnderline val;
+        switch (value) {
+            case Font.U_DOUBLE:
+                val = FontUnderline.DOUBLE;
+                break;
+            case Font.U_DOUBLE_ACCOUNTING:
+                val = FontUnderline.DOUBLE_ACCOUNTING;
+                break;
+            case Font.U_SINGLE_ACCOUNTING:
+                val = FontUnderline.SINGLE_ACCOUNTING;
+                break;
+            case Font.U_SINGLE:
+                val = FontUnderline.SINGLE;
+                break;
+            default:
+                val = FontUnderline.NONE;
+                break;
+        }
+        return val;
+    }
+
+}