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diff --git a/awt/javax/imageio/spi/IIORegistry.java b/awt/javax/imageio/spi/IIORegistry.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 Rustem V. Rafikov
+ * @version $Revision: 1.3 $
+ */
+
+package javax.imageio.spi;
+
+import java.util.Arrays;
+
+import org.apache.harmony.x.imageio.plugins.jpeg.JPEGImageReaderSpi;
+import org.apache.harmony.x.imageio.plugins.jpeg.JPEGImageWriterSpi;
+import org.apache.harmony.x.imageio.plugins.png.PNGImageReaderSpi;
+import org.apache.harmony.x.imageio.plugins.png.PNGImageWriterSpi;
+import org.apache.harmony.x.imageio.spi.FileIISSpi;
+import org.apache.harmony.x.imageio.spi.FileIOSSpi;
+import org.apache.harmony.x.imageio.spi.InputStreamIISSpi;
+import org.apache.harmony.x.imageio.spi.OutputStreamIOSSpi;
+import org.apache.harmony.x.imageio.spi.RAFIISSpi;
+import org.apache.harmony.x.imageio.spi.RAFIOSSpi;
+
+/*
+ * @author Rustem V. Rafikov, Viskov Nikolay
+ * @version $Revision: 1.3 $
+ */
+
+/**
+ * The IIORegistry class registers service provider instances (SPI). Service
+ * provider instances are recognized by specific meta-information in the JAR
+ * files containing them. The JAR files with SPI classes are loaded from the
+ * application class path.
+ * 
+ * @since Android 1.0
+ */
+public final class IIORegistry extends ServiceRegistry {
+
+    /**
+     * The instance.
+     */
+    private static IIORegistry instance;
+
+    /**
+     * The Constant CATEGORIES.
+     */
+    private static final Class[] CATEGORIES = new Class[] {
+            javax.imageio.spi.ImageWriterSpi.class, javax.imageio.spi.ImageReaderSpi.class,
+            javax.imageio.spi.ImageInputStreamSpi.class,
+            // javax.imageio.spi.ImageTranscoderSpi.class,
+            javax.imageio.spi.ImageOutputStreamSpi.class
+    };
+
+    /**
+     * Instantiates a new IIO registry.
+     */
+    private IIORegistry() {
+        super(Arrays.<Class<?>> asList(CATEGORIES).iterator());
+        registerBuiltinSpis();
+        registerApplicationClasspathSpis();
+    }
+
+    /**
+     * Register built-in SPIs.
+     */
+    private void registerBuiltinSpis() {
+        registerServiceProvider(new JPEGImageWriterSpi());
+        registerServiceProvider(new JPEGImageReaderSpi());
+        registerServiceProvider(new PNGImageReaderSpi());
+        registerServiceProvider(new PNGImageWriterSpi());
+        registerServiceProvider(new FileIOSSpi());
+        registerServiceProvider(new FileIISSpi());
+        registerServiceProvider(new RAFIOSSpi());
+        registerServiceProvider(new RAFIISSpi());
+        registerServiceProvider(new OutputStreamIOSSpi());
+        registerServiceProvider(new InputStreamIISSpi());
+        // -- TODO implement
+    }
+
+    /**
+     * Gets the default IIORegistry instance.
+     * 
+     * @return the default IIORegistry instance.
+     */
+    public static IIORegistry getDefaultInstance() {
+        // TODO implement own instance for each ThreadGroup (see also
+        // ThreadLocal)
+        synchronized (IIORegistry.class) {
+            if (instance == null) {
+                instance = new IIORegistry();
+            }
+            return instance;
+        }
+    }
+
+    /**
+     * Registers all service providers from the application class path.
+     */
+    public void registerApplicationClasspathSpis() {
+        // -- TODO implement for non-builtin plugins
+    }
+}