--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/java/util/function/BiPredicate.java Tue Feb 19 11:56:49 2013 -0800
@@ -0,0 +1,103 @@
+/*
+ * Copyright (c) 2010, 2013, 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;
+
+import java.util.Objects;
+
+/**
+ * Determines if the input objects match some criteria. This is the two-arity
+ * specialization of {@link Predicate}.
+ *
+ * @param <T> the type of the first argument to {@code test}.
+ * @param <U> the type of the second argument to {@code test}.
+ *
+ * @see Predicate
+ * @since 1.8
+ */
+@FunctionalInterface
+public interface BiPredicate<T, U> {
+
+ /**
+ * Return {@code true} if the inputs match some criteria.
+ *
+ * @param t an input object.
+ * @param u an input object.
+ * @return {@code true} if the inputs match some criteria.
+ */
+ boolean test(T t, U u);
+
+ /**
+ * Returns a predicate which evaluates to {@code true} only if this
+ * predicate and the provided predicate both evaluate to {@code true}. If
+ * this predicate returns {@code false} then the remaining predicate is not
+ * evaluated.
+ *
+ * @param p a predicate which will be logically-ANDed with this predicate.
+ * @return a new predicate which returns {@code true} only if both
+ * predicates return {@code true}.
+ */
+ public default BiPredicate<T, U> and(BiPredicate<? super T, ? super U> p) {
+ Objects.requireNonNull(p);
+ return (T t, U u) -> test(t, u) && p.test(t, u);
+ }
+
+ /**
+ * Returns a predicate which negates the result of this predicate.
+ *
+ * @return a new predicate who's result is always the opposite of this
+ * predicate.
+ */
+ public default BiPredicate<T, U> negate() {
+ return (T t, U u) -> !test(t, u);
+ }
+
+ /**
+ * Returns a predicate which evaluates to {@code true} if either this
+ * predicate or the provided predicate evaluates to {@code true}. If this
+ * predicate returns {@code true} then the remaining predicate is not
+ * evaluated.
+ *
+ * @param p a predicate which will be logically-ORed with this predicate.
+ * @return a new predicate which returns {@code true} if either predicate
+ * returns {@code true}.
+ */
+ public default BiPredicate<T, U> or(BiPredicate<? super T, ? super U> p) {
+ Objects.requireNonNull(p);
+ return (T t, U u) -> test(t, u) || p.test(t, u);
+ }
+
+ /**
+ * Returns a predicate that evaluates to {@code true} if both or neither of
+ * the component predicates evaluate to {@code true}.
+ *
+ * @param p a predicate which will be logically-XORed with this predicate.
+ * @return a predicate that evaluates to {@code true} if both or neither of
+ * the component predicates evaluate to {@code true}.
+ */
+ public default BiPredicate<T, U> xor(BiPredicate<? super T, ? super U> p) {
+ Objects.requireNonNull(p);
+ return (T t, U u) -> test(t, u) ^ p.test(t, u);
+ }
+}