--- /dev/null	2012-11-02 10:05:52.450017022 -0700
+++ new/src/share/classes/java/util/function/Block.java	2012-11-13 17:20:05.558102735 -0800
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2010, 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.function;
+
+/**
+ * Performs operations upon an input object which may modify that object and/or
+ * external state (other objects).
+ *
+ * @param <T> The type of input objects to {@code accept}.
+ *
+ * @since 1.8
+ */
+public interface Block<T> {
+
+    /**
+     * Performs operations upon the provided object which may modify that object
+     * and/or external state.
+     *
+     * @param t the input object
+     */
+    public void accept(T t);
+}