How to make sure that your files will be read on both linux/windows

Question

I'm currently using this to read my files as inputStream, it works under windows, will this work in LINUX?

File file = new File(currentDirectory.getCanonicalPath().toString() + "\\" + "myfile.txt");

If not what is the right way to read files, this "\\" looks kind of "fishy"

ADD-ON

I forgot this :

File currentDirectory = new File(".");

Answer 1

Instead of hard-coding the filename separator, use File.separator there.

Better yet, use:

File file = new File(currentDirectory, "myfile.txt");