原文:分享非常有用的Java程序 (关键代码) (二)---列出文件和目录

File dir = new File("directoryName");

String[] children = dir.list();

if (children == null) {

// Either dir does not exist or is not a directory

} else {

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

// Get filename of file or directory

String filename = children[i];

}

}

// It is also possible to filter the list of returned files.

// This example does not return any files that start with `.'.

FilenameFilter filter = new FilenameFilter() {

public boolean accept(File dir, String name) {

return !name.startsWith(".");

}

};

children = dir.list(filter);

// The list of files can also be retrieved as File objects

File[] files = dir.listFiles();

// This filter only returns directories

FileFilter fileFilter = new FileFilter() {

public boolean accept(File file) {

return file.isDirectory();

}

};

files = dir.listFiles(fileFilter); 

--Hurry