Where do I define a new file?

Programming Questions

hjklqw

Where do I define a new file?

in Programming Questions • 1 year ago

If I want to write

File f = new File (dataPath("file.txt"));
if (!f.exists()) {
print("no file");
}

I have it currently at the top/blank space, but when I check whether or not it exists it always says it doesn't (I have everything correctly named in the correct folder). If I define it inside the setup() method, I get a null pointer exception.

Where should I write it?

Replies(2)

PhiLho

Re: Where do I define a new file?

1 year ago

Your code works fine in setup(), and that's the place it should be, as at the "top", dataPath doesn't know where the sketch folder is, yet.

hjklqw

Re: Re: Where do I define a new file?

1 year ago

Your code works fine in setup(), and that's the place it should be, as at the "top", dataPath doesn't know where the sketch folder is, yet.

Thank you for the explanation! I know where I went wrong with the null pointer exception now - I had a function call that used .exists() before defining the file.

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