java - mkdirs() return value for already existing directories -

file.mkdirs javadocs:

public boolean mkdirs()

creates directory named abstract pathname, including necessary nonexistent parent directories. note if operation fails may have succeeded in creating of necessary parent directories.

returns: true if , if directory created, along necessary parent directories; false otherwise

my question is: mkdirs() return false if of directories wanted create existed? or return true if successful in creating entire path file, whether or not directories existed?

it returns false.

from java doc: - true if directory created, false on failure or if directory existed.

you should this:

if (file.mkdirs()) {     system.out.format("directory %s has been created.", file.getabsolutepath());  } else if (file.isdirectory()) {     system.out.format("directory %s has been created.", file.getabsolutepath());  } else {     system.out.format("directory %s not created.", file.getabsolutepath()); }