Anyway to get the chars that are not valid in filenames

[Paulo Levi]

In a platform independent manner of course.
I sometimes have to convert strings into filenames (and it is
important to users to read them yes) and fall afoul of this
MSDN Path..::.GetInvalidFileNameChars Method seems like it would work
as a windows binding. Anyway in the jdk (1.6) to do this?
(and it really should be in the Paths api too).