Using Java nio to create a subdirectory and file

Question

I\'m creating a simple program that will try to read in \"conf/conf.xml\" from disk, but if this file or dir doesn\'t exist will instead create them.

I can do this u

Answer 1

You can create directory and file in one code line:

Files.createFile(Files.createDirectories(confDir).resolve(confFile.getFileName()))

Files.createDirectories(confDir) will not throw an exception if the folder already exists and returns Path in any case.

Answer 2

You could declare your confFile as File instead of Path. Then you can use confFile.getParentFile().mkdirs();, see example below:

// ...

File confFile = new File("./conf/conf.xml"); 
confFile.getParentFile().mkdirs();

// ...

Or, using your code as is, you can use:

Files.createDirectories(confFile.getParent());

Answer 3

You could do the following:

// Get your Path from the string
Path confFile = Paths.get("./conf/conf.xml"); 
// Get the portion of path that represtents directory structure.  
Path subpath = confFile.subpath(0, confFile.getNameCount() - 1);
// Create all directories recursively
/**
     * Creates a directory by creating all nonexistent parent directories first.
     * Unlike the {@link #createDirectory createDirectory} method, an exception
     * is not thrown if the directory could not be created because it already
     * exists.
     *
*/
Files.createDirectories(subpath.toAbsolutePath()))