자바 File 클래스의 mkdir() & mkdirs()

1. mkdir()

Creates the directory named by this abstract pathname.

예: new File("C:\\Directory1").mkdir();


2. mkdirs()

Creates the directory named by this abstract pathname, including any necessary but nonexistent parent directories. Note that if this operation fails it may have succeeded in creating some of the necessary parent directories.

예: new File("C:\\Directory2\\Sub2\\Sub-Sub2").mkdirs()