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Collections:
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commons-collections4-4.4-sources.jar - Apache Commons Collections
commons-collections4-4.4-sources.jar is the source JAR file for Apache Commons Collections 4.2, which provides additional collection handling functionalities on top of JDK library.
JAR File Size and Download Location:
JAR name: commons-collections4-4.4-sources.jar Target JDK version: 8 Dependency: None File size: 715,541 bytes Release date: 05-Jul-2019 Download: Apache Commons Collections
✍: FYIcenter.com
⏎ org/apache/commons/collections4/comparators/ReverseComparator.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.comparators; import java.io.Serializable; import java.util.Comparator; import org.apache.commons.collections4.ComparatorUtils; /** * Reverses the order of another comparator by reversing the arguments * to its {@link #compare(Object, Object) compare} method. * * @param <E> the type of objects compared by this comparator * * @since 2.0 * @see java.util.Collections#reverseOrder() */ public class ReverseComparator<E> implements Comparator<E>, Serializable { /** Serialization version from Collections 2.0. */ private static final long serialVersionUID = 2858887242028539265L; /** The comparator being decorated. */ private final Comparator<? super E> comparator; //----------------------------------------------------------------------- /** * Creates a comparator that compares objects based on the inverse of their * natural ordering. Using this Constructor will create a ReverseComparator * that is functionally identical to the Comparator returned by * java.util.Collections.<b>reverseOrder()</b>. * * @see java.util.Collections#reverseOrder() */ public ReverseComparator() { this(null); } /** * Creates a comparator that inverts the comparison * of the given comparator. If you pass in <code>null</code>, * the ReverseComparator defaults to reversing the * natural order, as per {@link java.util.Collections#reverseOrder()}. * * @param comparator Comparator to reverse */ public ReverseComparator(final Comparator<? super E> comparator) { this.comparator = comparator == null ? ComparatorUtils.NATURAL_COMPARATOR : comparator; } //----------------------------------------------------------------------- /** * Compares two objects in reverse order. * * @param obj1 the first object to compare * @param obj2 the second object to compare * @return negative if obj1 is less, positive if greater, zero if equal */ @Override public int compare(final E obj1, final E obj2) { return comparator.compare(obj2, obj1); } //----------------------------------------------------------------------- /** * Implement a hash code for this comparator that is consistent with * {@link #equals(Object) equals}. * * @return a suitable hash code * @since 3.0 */ @Override public int hashCode() { return "ReverseComparator".hashCode() ^ comparator.hashCode(); } /** * Returns <code>true</code> iff <i>that</i> Object is * is a {@link Comparator} whose ordering is known to be * equivalent to mine. * <p> * This implementation returns <code>true</code> * iff <code><i>object</i>.{@link Object#getClass() getClass()}</code> * equals <code>this.getClass()</code>, and the underlying * comparators are equal. * Subclasses may want to override this behavior to remain consistent * with the {@link Comparator#equals(Object) equals} contract. * * @param object the object to compare to * @return true if equal * @since 3.0 */ @Override public boolean equals(final Object object) { if (this == object) { return true; } if (null == object) { return false; } if (object.getClass().equals(this.getClass())) { final ReverseComparator<?> thatrc = (ReverseComparator<?>) object; return comparator.equals(thatrc.comparator); } return false; } }
⏎ org/apache/commons/collections4/comparators/ReverseComparator.java
Or download all of them as a single archive file:
File name: commons-collections4-4.4-sources.jar File size: 715541 bytes Release date: 2019-07-05 Download
⇒ Download and Install commons-collections4-4.2-bin.zip
⇐ What Is commons-collections4-4.4.jar
2020-12-15, 100324👍, 0💬
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