Converting Relative Paths to Absolute Paths

Question

I have an absolute path to file A.

I have a relative path to file B from file A\'s directory. This path may and will use \"..\" to go up the directory structure in

Answer 1

In Java 7 you can also use the Path interface:

Path basePath = FileSystems.getDefault().getPath("C:\\projects\\project1\\module7\\submodule5\\fileA");
Path resolvedPath = basePath.getParent().resolve("..\\..\\module3\\submodule9\\subsubmodule32\\fileB"); // use getParent() if basePath is a file (not a directory) 
Path abolutePath = resolvedPath.normalize();