C:\temp\file.txt - This is a path, an absolute path, and a canonical path.
C:\temp\myapp\bin\..\\..\file.txt - This is a path and an absolute path. It's not a canonical path.
A canonical path is always an absolute path.
getCanonicalPath()/getCanonicalFile():
A canonical pathname is both absolute and unique. The precise definition of canonical form is system-dependent. This method first converts this pathname to absolute form if necessary, as if by invoking the getAbsolutePath() method, and then maps it to its unique form in a system-dependent way. This typically involves removing redundant names such as "." and ".." from the pathname, resolving symbolic links (on UNIX platforms), and converting drive letters to a standard case (on Microsoft Windows platforms).
