递归删除给定路径下不包含文件的文件夹

import java.io.File;

public class Recursion {

public static void main(String[] args) {
removeFile(new File("D:\\test"));
}

private static void removeFile(File f) {
if (!f.isDirectory()) {
return;
}
File[] fs = f.listFiles();
if (fs.length == 0) {
f.delete();
return;
}
for (File file : fs) {
removeFile(file);
}
if (f.listFiles().length == 0) {
f.delete();
}
}

}