commons-io-2.6-sources.jar is the source JAR file for Apache Commons IO 2.6, which is a library of utilities to assist with developing IO functionality.

JAR File Size and Download Location:

JAR name: commons-io-2.6-sources.jar
Target JDK version: 1.7
Dependency: None
File size: 280,834 bytes
Release date: 15-Oct-2017
Download: Apache Commons IO Website

⏎ org/apache/commons/io/comparator/LastModifiedFileComparator.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.io.comparator;

import java.io.File;
import java.io.Serializable;
import java.util.Comparator;

/**
 * Compare the <b>last modified date/time</b> of two files for order
 * (see {@link File#lastModified()}).
 * <p>
 * This comparator can be used to sort lists or arrays of files
 * by their last modified date/time.
 * <p>
 * Example of sorting a list of files using the
 * {@link #LASTMODIFIED_COMPARATOR} singleton instance:
 * <pre>
 *       List&lt;File&gt; list = ...
 *       ((AbstractFileComparator) LastModifiedFileComparator.LASTMODIFIED_COMPARATOR).sort(list);
 * </pre>
 * <p>
 * Example of doing a <i>reverse</i> sort of an array of files using the
 * {@link #LASTMODIFIED_REVERSE} singleton instance:
 * <pre>
 *       File[] array = ...
 *       ((AbstractFileComparator) LastModifiedFileComparator.LASTMODIFIED_REVERSE).sort(array);
 * </pre>
 * <p>
 *
 * @since 1.4
 */
public class LastModifiedFileComparator extends AbstractFileComparator implements Serializable {

    private static final long serialVersionUID = 7372168004395734046L;

    /** Last modified comparator instance */
    public static final Comparator<File> LASTMODIFIED_COMPARATOR = new LastModifiedFileComparator();

    /** Reverse last modified comparator instance */
    public static final Comparator<File> LASTMODIFIED_REVERSE = new ReverseComparator(LASTMODIFIED_COMPARATOR);

    /**
     * Compare the last the last modified date/time of two files.
     *
     * @param file1 The first file to compare
     * @param file2 The second file to compare
     * @return a negative value if the first file's lastmodified date/time
     * is less than the second, zero if the lastmodified date/time are the
     * same and a positive value if the first files lastmodified date/time
     * is greater than the second file.
     *
     */
    @Override
    public int compare(final File file1, final File file2) {
        final long result = file1.lastModified() - file2.lastModified();
        if (result < 0) {
            return -1;
        } else if (result > 0) {
            return 1;
        } else {
            return 0;
        }
    }
}

⏎ org/apache/commons/io/comparator/LastModifiedFileComparator.java

Or download all of them as a single archive file:

File name: commons-io-2.6-sources.jar
File size: 280834 bytes
Release date: 2017-10-05
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