Re: File.mkdirs wont create a directory

"Steve W. Jackson" <>
Thu, 14 Dec 2006 11:22:54 -0600
In article <>,
 "Andrew Thompson" <> wrote:

SlowLearner wrote:

Everytime I call mkdir or mkdirs it fails. I have administrator rights
and can create the folder in c++ but not in java. It returns false and
the folder isn't created. The code is

public boolean createDir(){
    File fp = new File("C:\\Backups");

The best way to build paths is to use the File
constructor that accepts a parent and child.
      File fp = new File("C:");
      // correct nomenclature for the drive?
      System.out.println( "fp.exists(): " + fp.exists() );
      fp = new File(fp,"Backup");
      System.out.println( "fp.exists(): " + fp.exists() );

    return fp.mkdirs();

any help would be appreciated

Andrew T.

In Andrew's example, I recommend using isDirectory() rather than
exists(), since the former includes the latter in its checks -- that is,
it returns true if and only if the File object (in this case the root of
drive C:) exists AND is a directory. I didn't test it just now, but I'm
pretty sure that using "C:" will return a File object referring to the
root directory of that drive.

I also suggest, however, breaking the habit of *ever* using those stupid
backslashes. Whatever idiot did that years ago should be strung up.
The fact is that modern Windows versions will handle *real* slashes
properly, for the most part -- and Java most certainly will handle them
fine in pretty much any setting I've dealt with thus far.

= Steve =
Steve W. Jackson
Montgomery, Alabama

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