Using Java nio to create a subdirectory and file

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());

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.

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