Index: src/java/javax/jdo/JDOReadOnlyException.java
===================================================================
--- src/java/javax/jdo/JDOReadOnlyException.java	(revision 0)
+++ src/java/javax/jdo/JDOReadOnlyException.java	(revision 0)
@@ -0,0 +1,72 @@
+/*
+ * 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.
+ */
+
+/*
+ * JDOReadOnlyException.java
+ */
+
+package javax.jdo;
+
+/** This class represents exceptions caused by an attempt to update a datastore
+ * when the PMF was created as "read-only".
+ *
+ * @version 2.2
+ * @since 2.2
+ */
+public class JDOReadOnlyException extends JDOUserException {
+
+  /**
+   * Constructs a new <code>JDOReadOnlyException</code> without a 
+   * detail message.
+   * @since 2.2
+   */
+  public JDOReadOnlyException() {
+  }
+  
+
+  /**
+   * Constructs a new <code>JDOReadOnlyException</code> with the 
+   * specified detail message.
+   * @param msg the detail message.
+   * @since 2.2
+   */
+  public JDOReadOnlyException(String msg) {
+    super(msg);
+  }
+
+  /**
+   * Constructs a new <code>JDOReadOnlyException</code> with the
+   * specified detail message and nested <code>Throwable</code>s.
+   * @param msg the detail message.
+   * @param nested the nested <code>Throwable[]</code>.
+   * @since 2.2
+   */
+  public JDOReadOnlyException(String msg, Throwable[] nested) {
+    super(msg, nested);
+  }
+
+  /**
+   * Constructs a new <code>JDOReadOnlyException</code> with the
+   * specified detail message and nested <code>Throwable</code>s.
+   * @param msg the detail message.
+   * @param nested the nested <code>Throwable</code>.
+   * @since 2.2
+   */
+  public JDOReadOnlyException(String msg, Throwable nested) {
+    super(msg, nested);
+  }
+}
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