--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/test/tools/javac/lambda/lambdaExecution/TPredicate.java	Tue Nov 20 09:58:55 2012 -0800
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2010, 2011, 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.
+ */
+
+/**
+ * Determines if the input object matches some criteria.
+ *
+ * <p>All predicate implementations are expected to:
+ * <ul>
+ *  <li>Provide stable results such that for any {@code t} the result of two
+ * {@code eval} operations are always equivalent. ie.<pre>
+ * boolean one = predicate.test(a);
+ * boolean two = predicate.test(a);
+ *
+ * assert one == two;
+ * </pre></li>
+ * <li>Equivalent input objects should map to equivalent output objects. ie.<pre>
+ * assert a.equals(b);  // a and b are equivalent
+ *
+ * boolean x = predicate.test(a);
+ * boolean y = predicate.test(ab;
+ *
+ * assert x == y; // their test results should be the same.
+ * </pre></li>
+ * <li>The predicate should not modify the input object in any way that would
+ * change the evaluation.</li>
+ * <li>When used for aggregate operations upon many elements predicates
+ * should not assume that the {@code test} operation will be called upon
+ * elements in any specific order.</li>
+ * </ul>
+ *
+ * @param <T> the type of input objects provided to {@code test}.
+ */
+public interface TPredicate<T> {
+
+    /**
+     * Return {@code true} if the input object matches some criteria.
+     *
+     * @param t the input object.
+     * @return {@code true} if the input object matched some criteria.
+     */
+     boolean test(T t);
+}