.mkdirs()在
File对象上使用该方法的外观文件：http : //www.roseindia.net/java/beginners/java-create-
directory.shtml
// Create a directory; all non-existent ancestor directories are// automatically createdsuccess = (new File("../potentially/long/pathname/without/all/dirs")).mkdirs();if (!success) { // Directory creation failed}
