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
– fge, Commented Jan 10, 2013 at 17:28

Peter Lawrey · Accepted Answer · 2013-01-10 17:28:44Z

75

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, 2013 at 17:28

Peter Lawrey

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3 Comments

Peter Lawrey Over a year ago

@AlikElzin-kilaka if you don't, you can get a FileAlreadyExistsException

AlikElzin-kilaka Over a year ago

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"

Gaurav Over a year ago

flawless answer Peter!

DeLac · Accepted Answer · 2013-01-10 17:32:57Z

1

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, 2013 at 17:32

DeLac

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1 Comment

lyomi Over a year ago

wrong. Files.write will add WRITE regardless of any options given. see java.nio.file.spi.FileSystemProvider.newOutputStream source

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