Cannot create File at the specified path

Question

I've been trying to create a file but I don't know why Java do not create it.
I don't get any exceptions so I really don't know where the problem is.
Here is my code where I triy to create the file:
System.out.println(MainMailer.class.getResource("").getPath().substring(1)+"Data/account.data");
            File file = new File(""+MainMailer.class.getResource("").getPath().substring(1)+"Data/account.data");Thnaks in advance,
Juan

Answer 1

>>
System.out.println(MainMailer.class.getResource("")
I don't know what you're expecting that to return.
I'd expect that it might return the URL to the FIRST
path in your classpath, which I wouldn't rely on to
be where your MainMailer class lives. You should not
be coding like this. Let there be a system property
or configuration file (which you read from the
classpath) which tells you where to store the files.
Don't try to magically determine the path of where
your MainMailer class lives. For another reason,
MainMailer may live in a JAR/WAR/EAR file, so there
is no "file path" to it. Bad design.I use this line like some sort of flag so I can see the path that I'm using. In fact, that path is the correct one, is where I want to create my file.