diff --git a/src/main/org/apache/tools/ant/taskdefs/optional/extension/Compatability.java b/src/main/org/apache/tools/ant/taskdefs/optional/extension/Compatability.java
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index 000000000..fb9f5e54d
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+++ b/src/main/org/apache/tools/ant/taskdefs/optional/extension/Compatability.java
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) The Apache Software Foundation. All rights reserved.
+ *
+ * This software is published under the terms of the Apache Software License
+ * version 1.1, a copy of which has been included  with this distribution in
+ * the LICENSE.txt file.
+ */
+package org.apache.tools.ant.taskdefs.optional.extension;
+
+/**
+ * Enum used in (@link Extension) to indicate the compatability
+ * of one extension to another. See (@link Extension) for instances
+ * of object.
+ *
+ * @author <a href="mailto:peter@apache.org">Peter Donald</a>
+ * @version $Revision$ $Date$
+ * @see Extension
+ */
+public final class Compatability
+{
+    /**
+     * A string representaiton of compatability level.
+     */
+    private final String m_name;
+
+    /**
+     * Create a compatability enum with specified name.
+     *
+     * @param name the name of compatability level
+     */
+    Compatability( final String name )
+    {
+        m_name = name;
+    }
+
+    /**
+     * Return name of compatability level.
+     *
+     * @return the name of compatability level
+     */
+    public String toString()
+    {
+        return m_name;
+    }
+}