--- /dev/null	2012-05-22 11:13:32.718187878 -0700
+++ new/src/share/classes/java/lang/Hashable32.java	2012-05-24 12:21:03.000000000 -0700
@@ -0,0 +1,63 @@
+/*
+ * 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.lang;
+
+
+/**
+* A class implements the {@code Hashable32} interface to indicate that it
+* provides a method for generating 32-bit hash values for instances.
+*
+* @since 1.8
+*/
+public interface Hashable32 {
+
+    /**
+    * Return a 32-bit hash code value for this object.
+    * <p>
+    * The general contract of {@code hash32} is:
+    * <ul>
+    * <li>Whenever it is invoked on the same object more than once during
+    *     an execution of a Java application, the {@code hash32} method
+    *     must consistently return the same integer, provided no information
+    *     used in {@code equals} comparisons on the object is modified.
+    *     This integer need not remain consistent from one execution of an
+    *     application to another execution of the same application.
+    * <li>If two objects are equal according to the {@code equals(Object)}
+    *     method, then calling the {@code hash32} method on each of
+    *     the two objects must produce the same integer result.
+    * <li>It is <em>not</em> required that if two objects are unequal
+    *     according to the {@link java.lang.Object#equals(java.lang.Object)}
+    *     method, then calling the {@code hash32} method on each of the
+    *     two objects must produce distinct integer results.  However, the
+    *     programmer should be aware that producing distinct integer results
+    *     for unequal objects may improve the performance of hash tables.
+    * </ul>
+    *
+    * @return  a hash code value for this object.
+    * @see     java.lang.Object#equals(java.lang.Object)
+     */
+    int hash32(); // default { hashCode() }
+}