Best Way using Java to see if a file/file type exists in a directory (platform independant ie not using unix find command)

String filename;

if(new File(filename).exists)
{
........................
}

;JOOP!

The 'filename' can be a full pathname (e.g. "/usr/lib/ghr/xyz.c") or a relative path (e.g. "../there/pqr.c"),
but in the latter case, you must know what your current directory is ( System.getProperty("user.dir");  ).
;JOOP!

Equivalent to Unix find would normally involve recursion. This is how to do it platform-independently in pure Java.


http://javaalmanac.com/egs/java.io/TraverseTree.html

NB. method process(File) needs to be supplied by you

The questioner did not ask for a "deeper" search!

;JOOP!

So I would have to create a filter for each of the files types I was looking for then.  Say I was looking for ryno.data, app71.txt, and day.obj... but they are all in the same directory as I placed them there.

Sorry, just mentioned find (unix) as I figured someone would say use that... but I want a java way. :)
All the files I would look for would be in one directory where I placed them...  but other have access to the directory which is why I need something that checks for the different type if they are there or not.

Thanks
ryno71

Using a filter is actually not efficient. You can just use File.exists for each case you have

ryno71, why can't you just use my simple code 3 times, as you are looking for 3 files.
;JOOP!

Actually Sciuriware, I could be looking for 3 to 38 files depending...

If it was just 3 files you are right using file.exists would be the easiest...

thanks for the help guys!
ryno71