Writing to a File in Java

Question

I'm really new to Java, and I can't write to a file for some reason, my code looks like this:

FileWriter fstream;
    try {
        fstream = new FileWriter(fileLocation);
        BufferedWriter out = new BufferedWriter(fstream);
        log.info("test was supposed to be written to the file");
        out.write("test");

        out.flush();
        out.close();

    } catch (IOException e) {
        log.error("File not created ", e);
    }

When I go to the fileLocation, I see my file, but it's empty. My log does say "test was supposed to be written to the file"

What could I be doing wrong here?

Thanks!

UPDATE: My FileLocation variable is a string:

private String fileLocation="/Users/s/out.txt";

I'm using a Mac

What if you try to also do fstream.flush(); fstream.close(); ? — Andrey Adamovich
– Andrey Adamovich, Commented Mar 8, 2011 at 23:03
The code works for me. The underlying writer should be closed as well, when the BufferedWriter is closed, shouldn't it? Maybe there is a problem concerning access rights? Have you tried a folder where you have full access? — Martin Klinke
– Martin Klinke, Commented Mar 8, 2011 at 23:06
@starcorn, that doesn't matter. Closing the outermost wrapper is sufficient, even though I'd have done it in finally. The flush() call is also unnecessary since close already implicitly does that. — BalusC
– BalusC, Commented Mar 8, 2011 at 23:09
The accepted answer indicates that this is a problem that can not be reproduced (by someone running the test correctly) — Raedwald
– Raedwald, Commented Dec 11, 2014 at 7:52

jbasko · Accepted Answer · 2011-03-08 23:05:29Z

3

Code is fine. Are you checking the right file location? Perhaps you had created the file you're checking before; while your program could be writing elsewhere.

answered Mar 8, 2011 at 23:05

jbasko

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1 Comment

Doug Molineux Over a year ago

You are correct, I am using Vaadin to make this file downloadable, so each time I downloaded it, it was empty, but the original file appears to have "test" in it. Thanks for the suggestion :)

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