diff -r c83a0fa44906 -r 87067e3340d3 jdk/src/share/classes/java/util/stream/CloseableStream.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/java/util/stream/CloseableStream.java	Wed Apr 17 14:39:04 2013 -0400
@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package java.util.stream;
+
+/**
+ * A {@code CloseableStream} is a {@code Stream} that can be closed.
+ * The close method is invoked to release resources that the object is
+ * holding (such as open files).
+ *
+ * @param <T> The type of stream elements
+ * @since 1.8
+ */
+public interface CloseableStream<T> extends Stream<T>, AutoCloseable {
+
+    /**
+     * Closes this resource, relinquishing any underlying resources.
+     * This method is invoked automatically on objects managed by the
+     * {@code try}-with-resources statement.  Does nothing if called when
+     * the resource has already been closed.
+     *
+     * This method does not allow throwing checked {@code Exception}s like
+     * {@link AutoCloseable#close() AutoCloseable.close()}. Cases where the
+     * close operation may fail require careful attention by implementers. It
+     * is strongly advised to relinquish the underlying resources and to
+     * internally <em>mark</em> the resource as closed. The {@code close}
+     * method is unlikely to be invoked more than once and so this ensures
+     * that the resources are released in a timely manner. Furthermore it
+     * reduces problems that could arise when the resource wraps, or is
+     * wrapped, by another resource.
+     *
+     * @see AutoCloseable#close()
+     */
+    void close();
+}