JAVA: IO new File(filename) throwing "Can't read input file!"

I'm trying to create a file from one server to another. Server A executes script which needs to create a file one server B. Server A has a script that creates folder without issues (no permission denied or anything) and call the following code after creating the folder:

byte[] btDataFile = new sun.misc.BASE64Decoder().decodeBuffer(base64);
File of = new File("driverLetter:\folder_path\filename.png");
FileOutputStream osf = new FileOutputStream(of);
osf.write(btDataFile);
osf.flush();

"base64" is a base64 string representation of a png image which I need 开发者_如何学编程to create as a file. The value of the string is quite long so I can't post it in here but it's there, not empty, not null, it has a value. But the code throws the error:

"Can't read input file!"

Why can the script read the "input file"? Thanks

Use forward slashes in your file path. Or escape backslashes with \\.

You need to use an escape character since the backslash is reserved by java. Try a double backslash like this

File of = new File("driverLetter:\\folder_path\\filename.png");

It also suggested to use

File.separator