How to know where FileOutputStream will write file?

Question

I have instance FileOutputStream and I want to write file.

after execution my code I can't find file on my filesystem.

maybe FileOutputStream have method that I will know where it writes?

Attalanta

possible duplicate of Get file name from FileOutputStream – Input

If you did not give an absolute path, it will be relative to the current working directory. If you don't know where that is, use an absolute path, or do a System.out.println(new File(".").getAbsolutePath()); – Bluebird

Answer 1

You decide where the file will be located, when you call constructor.

new FileOutputStream("path/to/my/file.txt");

There are a few similiar constructors. You can pass for example File or FileDescriptor parameter too. Just read Java API Doc.

http://docs.oracle.com/javase/7/docs/api/java/io/FileOutputStream.html

Countrydance

Answer 2

When you created the FileOutputStream instance, you would have given either File object or a String path(absolute path with file name) or a FileDescriptor object. That path is where your file would be placed.

Have a look at the various constructors of FileOutputStream and check which was the one you had used.

Bambino

@MichaëlBenjaminSaerens - Yeah I already mentioned in that my answer! :) – Bambino

You didn't miss it initially. I edited it a bit later, but just before you posted your comment!:) Anyways, constructive comments are always welcome. – Bambino

Or a String with a relative path. – Anxious

Answer 3

FileOutputStream(File file)
Creates a file output stream to write to the file represented by the specified File object.
FileOutputStream(File file, boolean append)
Creates a file output stream to write to the file represented by the specified File object.
FileOutputStream(FileDescriptor fdObj)
Creates a file output stream to write to the specified file descriptor, which represents an existing connection to an actual file in the file system.
FileOutputStream(String name)
Creates a file output stream to write to the file with the specified name.
FileOutputStream(String name, boolean append)
Creates a file output stream to write to the file with the specified name.

All overloaded constructors take filename. if file does not exist in the absolute path provided a new one is created. If no absolute path is provided then file will be crated in current directory.

Fleabitten

Answer 4

I just started working with Java on a RESTful service project. I have written to a file with FileOutputStream and couldn't find the file. My OS is Windows, and I am working with Eclipse. I finally found the file where the "eclipse.exe" is located on my computer. It looks like the Java class stored the file there if I did not provide an absolute path. It could be different in your case. This is such an old post but felt like replying as I see some posts asking similar questions even now.

Mehta

Answer 5

The contstructor of the FileOutputStream object takes different parameters. One of them is a string of the path to your file. Another is a File object, in that case, you defined the path to your file when you created that File object.

Leoni