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diff --git a/src/javax/inject/Provider.java b/src/javax/inject/Provider.java
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+/*
+ * Copyright (C) 2009 The JSR-330 Expert Group
+ *
+ * Licensed 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 javax.inject;
+
+/**
+ * Provides instances of {@code T}. Typically implemented by an injector. For
+ * any type {@code T} that can be injected, you can also inject
+ * {@code Provider<T>}. Compared to injecting {@code T} directly, injecting
+ * {@code Provider<T>} enables:
+ *
+ * <ul>
+ *   <li>retrieving multiple instances.</li>
+ *   <li>lazy or optional retrieval of an instance.</li>
+ *   <li>breaking circular dependencies.</li>
+ *   <li>abstracting scope so you can look up an instance in a smaller scope
+ *      from an instance in a containing scope.</li>
+ * </ul>
+ *
+ * <p>For example:
+ *
+ * <pre>
+ *   class Car {
+ *     &#064;Inject Car(Provider&lt;Seat> seatProvider) {
+ *       Seat driver = seatProvider.get();
+ *       Seat passenger = seatProvider.get();
+ *       ...
+ *     }
+ *   }</pre>
+ */
+public interface Provider<T> {
+
+    /**
+     * Provides a fully-constructed and injected instance of {@code T}.
+     *
+     * @throws RuntimeException if the injector encounters an error while
+     *  providing an instance. For example, if an injectable member on
+     *  {@code T} throws an exception, the injector may wrap the exception
+     *  and throw it to the caller of {@code get()}. Callers should not try
+     *  to handle such exceptions as the behavior may vary across injector
+     *  implementations and even different configurations of the same injector.
+     */
+    T get();
+}