list():Returns ? an ? array ? of ? strings ? naming ? the ? files ? and ? directories ? in ? the ? directory ? denoted ? by ? this ? abstract ? pathname.

以絕對(duì)路徑返回該目錄下所有的文件名的一個(gè)字符串?dāng)?shù)組.

listFiles():Returns ? an ? array ? of ? abstract ? pathnames ? denoting ? the ? files ? in ? the ? directory ? denoted ? by ? this ? abstract ? pathname.

以相對(duì)路徑返回該目錄下所有的文件名的一個(gè)字符串?dāng)?shù)組.

list() will return an array of strings naming the files and directories in the given directory. The file names are not complete path but just file/directory names.

listFiles() will return an array of File objects.

In both the cases the order in which the file names appear are not alphabetically ordered.

import java.io.File;

/**

* @author Madan Kumar K

*

*/

public class ListFiles {

public static void main(String[] args) {

String dir = System.getProperty(“user.dir”);

File f = new File(dir);

String[] fileNames = f.list();

for(int i=0; i < fileNames.length; i++)

System.out.println(fileNames[i]);

File[] files = f.listFiles();

for(int i=0; i < files.length; i++)

System.out.println(files[i]);

}

}

listRoots() is used to list the file system roots. For a windows platform roots mean the drives, while on a UNIX platform there is a single file system; that is “/”. You can list the roots using.

File[] roots = f.listRoots();

for(int i=0; i < roots.length; i++)

System.out.println(roots[i]);

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