> For the complete documentation index, see [llms.txt](https://boxlang.ortusbooks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/io/filewrite.md).

# FileWrite

Writes the contents of a string or binary data to a file.

When called with a file path (string, Path, or File), the file is created/overwritten on disk. When called with an open BoxFile object (from {@code fileOpen()}), the data is written through the file's existing stream, respecting the current mode (write or append) and position. The caller is responsible for closing the file object afterward.

## Method Signature

```
FileWrite(file=[boxfile], data=[any], charset=[string], createPath=[boolean])
```

### Arguments

| Argument     | Type      | Required | Description                                                                                                  | Default |
| ------------ | --------- | -------- | ------------------------------------------------------------------------------------------------------------ | ------- |
| `file`       | `boxfile` | `true`   | A file path (string, Path, File) to create/overwrite, or an open BoxFile object to write through its stream. |         |
| `data`       | `any`     | `true`   | The string or binary byte array of the file content.                                                         |         |
| `charset`    | `string`  | `false`  | The charset encoding (ignored for binary data). Only applies to path-based writes.                           | `UTF-8` |
| `createPath` | `boolean` | `false`  | When true, ensures all directories to the file destination are created. Only applies to path-based writes.   | `false` |

## Examples

### Write a Temporary File

[Run Example](https://try.boxlang.io/?code=eJxLy8xJDS%2FKLEnVUEhPLQlJzS1wA4rAOS6ZRanJJflFlRqaOgpKJVBpJQUQz7dSwSWxJBHIseYCAIc0Fvs%3D)

```java
fileWrite( getTempFile( getTempDirectory(), "tempFile" ), "My Data" );

```

### Additional Examples

[Run Example](https://try.boxlang.io/?code=eJxLy8xJLS%2FKLEnVUFBKA7ILEksylHQgbOf8vJLUvBKFknyFpFQFsColBU1rLgDn%2FxFz)

```java
filewrite( "filepath", "fileContent to be write" );

```

## Related

* [ContractPath](/boxlang-language/reference/built-in-functions/io/contractpath.md)
* [CreateTempDirectory](/boxlang-language/reference/built-in-functions/io/createtempdirectory.md)
* [CreateTempFile](/boxlang-language/reference/built-in-functions/io/createtempfile.md)
* [DirectoryCopy](/boxlang-language/reference/built-in-functions/io/directorycopy.md)
* [DirectoryCreate](/boxlang-language/reference/built-in-functions/io/directorycreate.md)
* [DirectoryDelete](/boxlang-language/reference/built-in-functions/io/directorydelete.md)
* [DirectoryExists](/boxlang-language/reference/built-in-functions/io/directoryexists.md)
* [DirectoryList](/boxlang-language/reference/built-in-functions/io/directorylist.md)
* [DirectoryMove](/boxlang-language/reference/built-in-functions/io/directorymove.md)
* [DirectoryRename](/boxlang-language/reference/built-in-functions/io/directoryrename.md)
* [ExpandPath](/boxlang-language/reference/built-in-functions/io/expandpath.md)
* [FileAppend](/boxlang-language/reference/built-in-functions/io/fileappend.md)
* [FileClose](/boxlang-language/reference/built-in-functions/io/fileclose.md)
* [FileCopy](/boxlang-language/reference/built-in-functions/io/filecopy.md)
* [FileDelete](/boxlang-language/reference/built-in-functions/io/filedelete.md)
* [FileExists](/boxlang-language/reference/built-in-functions/io/fileexists.md)
* [FileGetMimeType](/boxlang-language/reference/built-in-functions/io/filegetmimetype.md)
* [FileInfo](/boxlang-language/reference/built-in-functions/io/fileinfo.md)
* [FileIsEOF](/boxlang-language/reference/built-in-functions/io/fileiseof.md)
* [FileMove](/boxlang-language/reference/built-in-functions/io/filemove.md)
* [FileOpen](/boxlang-language/reference/built-in-functions/io/fileopen.md)
* [FileRead](/boxlang-language/reference/built-in-functions/io/fileread.md)
* [FileReadBinary](/boxlang-language/reference/built-in-functions/io/filereadbinary.md)
* [FileReadLine](/boxlang-language/reference/built-in-functions/io/filereadline.md)
* [FileSeek](/boxlang-language/reference/built-in-functions/io/fileseek.md)
* [FileSetAccessMode](/boxlang-language/reference/built-in-functions/io/filesetaccessmode.md)
* [FileSetAttribute](/boxlang-language/reference/built-in-functions/io/filesetattribute.md)
* [FileSetLastModified](/boxlang-language/reference/built-in-functions/io/filesetlastmodified.md)
* [FileSkipBytes](/boxlang-language/reference/built-in-functions/io/fileskipbytes.md)
* [FileWriteLine](/boxlang-language/reference/built-in-functions/io/filewriteline.md)
* [GetCanonicalPath](/boxlang-language/reference/built-in-functions/io/getcanonicalpath.md)
* [GetDirectoryFromPath](/boxlang-language/reference/built-in-functions/io/getdirectoryfrompath.md)
* [GetFileInfo](/boxlang-language/reference/built-in-functions/io/getfileinfo.md)
* [getTempFile](/boxlang-language/reference/built-in-functions/io/gettempfile.md)
* [PropertyFile](/boxlang-language/reference/built-in-functions/io/propertyfile.md)


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