java 取目录文件按日期排序

package test;import java.io.File;import java.util.Arrays;import java.util.Comparator;import java.util.Date;public class TestFile {public static void main(String[] args) {File file = new File("d:/");File[] fs = file.listFiles();Arrays.sort(fs, new TestFile.CompratorByLastModified());for (int i = 0; i < fs.length; i++) {System.out.println(new Date(fs[i].lastModified()).toLocaleString());System.out.println(fs[i].getName());}}static class CompratorByLastModified implements Comparator<File> {public int compare(File f1, File f2) {long diff = f1.lastModified() - f2.lastModified();if (diff > 0)return 1;else if (diff == 0)return 0;elsereturn -1;}public boolean equals(Object obj) {return true;}}}