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diff --git a/tags/java/sca/1.5.1/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/ContributionClassloaderProviderExtensionPoint.java b/tags/java/sca/1.5.1/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/ContributionClassloaderProviderExtensionPoint.java
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+++ b/tags/java/sca/1.5.1/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/ContributionClassloaderProviderExtensionPoint.java
@@ -0,0 +1,55 @@
+/*
+ * 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.tuscany.sca.contribution.java;
+
+/**
+ * An extension point for contribution classloaders. Contribution 
+ * classloaders respect the classloading strategy for the contribution
+ * in question. For example, a JAR contribution loads classes from its 
+ * root directory while an EAR contribution follows the JEE classloading 
+ * strategy. The choice of classloader is driven by the type of 
+ * contribution being loaded. 
+ *
+ * @version $Rev$ $Date$
+ */
+public interface ContributionClassloaderProviderExtensionPoint {
+    
+    /**
+     * Add a contribution classloader provider extension.
+     * 
+     * @param provider The provider to add
+     */
+    void addProvider(ContributionClassLoaderProvider provider);
+    
+    /**
+     * Remove a contribution classloader provider extension.
+     *  
+     * @param provider The provider to remove
+     */
+    void removeProvider(ContributionClassLoaderProvider provider); 
+    
+    /**
+     * Get a contribution classloader provider for the given contribution type.
+     * @param contributionType the lookup key 
+     * @return The provider
+     */
+    ContributionClassLoaderProvider getProvider(String contributionType);
+
+}