Predicate.java
- /*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
- package org.apache.commons.collections4;
- /**
- * Defines a functor interface implemented by classes that perform a predicate
- * test on an object.
- * <p>
- * A {@code Predicate} is the object equivalent of an {@code if} statement.
- * It uses the input object to return a true or false value, and is often used in
- * validation or filtering.
- * </p>
- * <p>
- * Standard implementations of common predicates are provided by
- * {@link PredicateUtils}. These include true, false, instanceof, equals, and,
- * or, not, method invocation and null testing.
- * </p>
- *
- * @param <T> the type of the input to the predicate.
- * @since 1.0
- * @deprecated Use {@link java.util.function.Predicate}.
- */
- @Deprecated
- public interface Predicate<T> extends java.util.function.Predicate<T> {
- /**
- * Use the specified parameter to perform a test that returns true or false.
- *
- * @param object the object to evaluate, should not be changed
- * @return true or false
- * @throws ClassCastException (runtime) if the input is the wrong class
- * @throws IllegalArgumentException (runtime) if the input is invalid
- * @throws FunctorException (runtime) if the predicate encounters a problem
- */
- boolean evaluate(T object);
- @Override
- default boolean test(final T t) {
- return evaluate(t);
- }
- }