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diff --git a/awt/java/awt/image/WritableRenderedImage.java b/awt/java/awt/image/WritableRenderedImage.java
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+/*
+ *  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.
+ */
+/**
+ * @author Igor V. Stolyarov
+ * @version $Revision$
+ */
+
+package java.awt.image;
+
+import java.awt.Point;
+
+/**
+ * The WriteableRenderedImage interface is interface for objects which contains
+ * Raster data of one or several tiles. This interface provides notification
+ * mechanism for obtaining tile's writing status.
+ * 
+ * @since Android 1.0
+ */
+public interface WritableRenderedImage extends RenderedImage {
+
+    /**
+     * Gets and checks out the writable tile for writing.
+     * 
+     * @param tileX
+     *            the X index of the tile.
+     * @param tileY
+     *            the Y index of the tile.
+     * @return the WritableRaster.
+     */
+    public WritableRaster getWritableTile(int tileX, int tileY);
+
+    /**
+     * Removes the registered TileObserver.
+     * 
+     * @param to
+     *            the TileObserver which is registered for this
+     *            WritableRenderedImage.
+     */
+    public void removeTileObserver(TileObserver to);
+
+    /**
+     * Adds the specified TileObserver to this WritableRenderedImage.
+     * 
+     * @param to
+     *            the TileObserver object to be added.
+     */
+    public void addTileObserver(TileObserver to);
+
+    /**
+     * Sets this image to the contents of the specified Raster.
+     * 
+     * @param r
+     *            the specified Raster.
+     */
+    public void setData(Raster r);
+
+    /**
+     * Gets the array of points which represent indices of tiles which are check
+     * out for writing.
+     * 
+     * @return the array of points.
+     */
+    public Point[] getWritableTileIndices();
+
+    /**
+     * Checks if the specified tile is writable or not.
+     * 
+     * @param tileX
+     *            the X index of tile.
+     * @param tileY
+     *            the Y index of tile.
+     * @return true, if the specified tile is writable, false otherwise.
+     */
+    public boolean isTileWritable(int tileX, int tileY);
+
+    /**
+     * Release the specified writable tile. This method removes the writer from
+     * the tile.
+     * 
+     * @param tileX
+     *            the X index of the tile.
+     * @param tileY
+     *            the Y index of the tile.
+     */
+    public void releaseWritableTile(int tileX, int tileY);
+
+    /**
+     * Checks if there is a tile which is checked out for writing.
+     * 
+     * @return true, if any tile is checked out for writing, false if there is
+     *         no such tile.
+     */
+    public boolean hasTileWriters();
+
+}