--- /dev/null	2013-07-08 08:32:16.866272774 -0700
+++ new/src/share/classes/java/util/MayHoldCloseableResource.java	2013-07-10 14:11:56.667135388 -0700
@@ -0,0 +1,77 @@
+/*
+ * 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;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+/**
+ * An object that may (but need not) hold one or more references to
+ * resources that will be released when closed.  Such objects may be
+ * used with try-with-resources or related {@code try...finally}
+ * constructions that ensure they are closed as soon as they are no
+ * longer needed.  Interface {@code MayHoldCloseableResource} indicates that
+ * only a minority of usages warrant resource control constructions:
+ * those specialized to known resource-bearing instances, or those
+ * that must operate in complete generality.
+ *
+ * <p>For example, most usages of the {@link java.util.stream.Stream}
+ * classes operate on data sources such as an array, {@code
+ * Collection}, or generator function that do not require or benefit
+ * from explicit resource control.  However, some uses of IO channels
+ * as data sources do.
+ *
+ * <p>Annotation {@link HoldsResource} may be used to guide users or static
+ * analysis tools to deciding whether resource-control constructions are
+ * warranted when using particular instantiations of
+ * {@code MayHoldCloseableResource}.
+ *
+ * @see AutoCloseable
+ * @see HoldsResource
+ */
+public interface MayHoldCloseableResource extends AutoCloseable {
+    /**
+     * Closes this resource, relinquishing any underlying resources.
+     * This method is invoked automatically on objects managed by the
+     * {@code try}-with-resources statement.
+     *
+     * Implementers of this interface are strongly encouraged
+     * to make their {@code close} methods idempotent.
+     *
+     * @see AutoCloseable#close()
+     */
+    @Override
+    void close();
+
+    /**
+     * Indicates that a variable holding a {@code MayHoldCloseableResource} or
+     * a method returning a {@code MayHoldCloseableResource} definitely does
+     * hold a closeable resource.
+     */
+    @Retention(RetentionPolicy.CLASS)
+    @Documented
+    @interface HoldsResource { }
+}