How to find the directory of a file

Question

Like the title says, I need to find the directory/path of a file. I know that the computer running the program has the file but I don't know the path/directory. The only thing I know about the file is its name(file.jar).

File f = new File("file.jar"); String ap = f.getAbsolutePath(); return ap;

I have already tried using getAbsolutePath() method and it didn't work so I was wondering if there was another way to get the directory/path of file.jar.

Did you try this: mkyong.com/java/how-to-get-the-filepath-of-a-file-in-java ? — user3522371
– user3522371, Commented Jul 17, 2014 at 15:42
possible duplicate of How do I get a file's directory using the File object? — clever_bassi
– clever_bassi, Commented Jul 17, 2014 at 15:45
@ayushi .getParent() and getParentFile() just return null when I use them. — user3726628
– user3726628, Commented Jul 17, 2014 at 15:54
@ayushi That's a relative path, and OP can't give the absolute path, or the relative path, because s/he doesn't know it. — David Conrad
– David Conrad, Commented Jul 17, 2014 at 16:19

wolff · Accepted Answer · 2014-07-17 15:47:38Z

The argument given to the File-constructor is a path relative to the working directory (as long as you don't pass an absolute path). The constructor won't search for this file but just tries to open a file with that name in your working directory.

This might help if you want to search for files: http://docs.oracle.com/javase/tutorial/essential/io/find.html

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