--- /dev/null	2013-03-09 17:25:01.184291984 -0500
+++ new/src/share/classes/java/util/stream/BaseStream.java	2013-03-11 17:43:59.000000000 -0400
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2012, 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;
+
+import java.util.Iterator;
+import java.util.Spliterator;
+
+/**
+ * Base interface for stream types such as {@link Stream}, {@link IntStream},
+ * etc.  Contains methods common to all stream types.
+ *
+ * @param <T> Type of stream elements.
+ * @since 1.8
+ */
+interface BaseStream<T, S extends BaseStream<T, S>> {
+    /**
+     * Returns an iterator for the elements of this stream.  This is
+     * a <a href="package-summary.html#StreamOps">terminal operation</a>.
+     *
+     * @return the element iterator for this stream
+     */
+    Iterator<T> iterator();
+
+    /**
+     * Returns a spliterator for the elements of this stream.  This is
+     * a <a href="package-summary.html#StreamOps">terminal operation</a>.
+     *
+     * @return the element spliterator for this stream
+     */
+    Spliterator<T> spliterator();
+
+    /**
+     * Returns whether this stream, when executed, will execute in parallel
+     *
+     * @return whether this stream will execute in parallel
+     */
+    boolean isParallel();
+
+    /**
+     * Returns the composition of stream flags of the stream source and all
+     * intermediate operations.
+     *
+     * @return the composition of stream flags of the stream source and all
+     *         intermediate operations
+     * @see StreamOpFlag
+     */
+    int getStreamFlags();
+
+    /**
+     * Produces a stream which has the same contents as this stream, but is a
+     * sequential stream.  If this stream is already sequential, may return
+     * itself.  This is a
+     * <a href="package-summary.html#StreamOps">stateful intermediate operation</a>.
+     *
+     * @return a sequential stream
+     */
+    S sequential();
+
+    /**
+     * Produces a stream which has the same contents as this stream, but is a
+     * parallel stream.  If this stream is already parallel, may return itself.
+     * This is a
+     * <a href="package-summary.html#StreamOps">stateful intermediate operation</a>.
+     *
+     * @return a parallel stream
+     */
+    S parallel();
+}