java按文件大小、名称、日期排序方法详解编程语言

public static void orderByLength(String fliePath) { List File files = Arrays.asList(new File(fliePath).listFiles()); Collections.sort(files, new Comparator File () { public int compare(File f1, File f2) { long diff = f1.length() - f2.length(); if (diff 0) return 1; else if (diff == 0) return 0; else return -1; public boolean equals(Object obj) { return true; }); for (File f : files) { if(f.isDirectory()) continue; System.out.println(f.getName()+":"+f.length()); //按照文件名称排序 public static void orderByName(String fliePath) { List files = Arrays.asList(new File(fliePath).listFiles()); Collections.sort(files, new Comparator File () { @Override public int compare(File o1, File o2) { if (o1.isDirectory() o2.isFile()) return -1; if (o1.isFile() o2.isDirectory()) return 1; return o1.getName().compareTo(o2.getName()); }); for (File f : files) { System.out.println(f.getName()); //按日期排序 public static void orderByDate(String fliePath) { File file = new File(fliePath); File[] fs = file.listFiles(); Arrays.sort(fs,new 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; else return -1; public boolean equals(Object obj) { return true; }); for (int i = fs.length-1; i i--) { System.out.println(fs[i].getName()); System.out.println(new Date(fs[i].lastModified())); public static void main(String args[]){ // orderByLength("c:/java"); // orderByName("c:/java"); orderByDate("c:/java"); }

原创文章，作者：Maggie-Hunter，如若转载，请注明出处：https://blog.ytso.com/10724.html

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