Java Files.write NoSuchFileException

Question

I'm trying to write some text to a file using Files.write() method.

byte[] contents = project.getCode().getBytes(StandardCharsets.UTF_8);

try {
    Files.write(project.getFilePath(), contents, StandardOpenOption.CREATE);
} catch (IOException ex) {
    ex.printStackTrace();
    return;
}

According to the API, if the file doesn't exist, it will be created and then written to.

However, I get this:

java.nio.file.NoSuchFileException: C:\Users\Administrator\Desktop\work\Default.txt
    at sun.nio.fs.WindowsException.translateToIOException(Unknown Source)
    at sun.nio.fs.WindowsException.rethrowAsIOException(Unknown Source)
    at sun.nio.fs.WindowsException.rethrowAsIOException(Unknown Source)
    at sun.nio.fs.WindowsFileSystemProvider.newByteChannel(Unknown Source)
    at java.nio.file.spi.FileSystemProvider.newOutputStream(Unknown Source)
    at java.nio.file.Files.newOutputStream(Unknown Source)
    at java.nio.file.Files.write(Unknown Source)

Am I missing something?

Does directory `C:\Users\Administrator\Desktop\work` exist? (and why do you develop as an admin?) — fge, Jan 10 '13 at 17:28

score 72 · Accepted Answer · answered Jan 10 '13 at 17:28

72

You should be able to create a file, but you can't create a directory. You may need to check the directory C:\Users\Administrator\Desktop\work exists first.

You can do

Path parentDir = project.getFilePath().getParent();
if (!Files.exists(parentDir))
    Files.createDirectories(parentDir);

answered Jan 10 '13 at 17:28

Peter Lawrey

525,659
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@AlikElzin-kilaka if you don't, you can get a `FileAlreadyExistsException` – Peter Lawrey Apr 01 '17 at 17:58
2

If `getParent()` is used, `FileAlreadyExistsException` will never be thrown. Parent is always a directory. From the documentation: "FileAlreadyExistsException - if dir exists but is not a directory" – AlikElzin-kilaka Apr 02 '17 at 05:45
1

flawless answer Peter! – Gaurav Jun 17 '20 at 19:50

score 2 · Answer 2 · answered Jan 10 '13 at 17:32

2

The file will be written if default OpenOptions parameter is used. If you specify CREATE, default parameters will not be used, but it is used just CREATE. Try to add WRITE in addition to CREATE, or just leave that parameter empty

answered Jan 10 '13 at 17:32

DeLac

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13
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wrong. `Files.write` will add `WRITE` regardless of any options given. see `java.nio.file.spi.FileSystemProvider.newOutputStream` source – lyomi Oct 02 '13 at 06:59

Java Files.write NoSuchFileException

2 Answers2