java calculate pathname difference [duplicate]

This question already has answers here: How to construct a relative path in Java from two absolute paths (or URLs)? (23 answers) Closed 6 years ago.

开发者_运维知识库Is there an open source library that, given ...

/a/b/c
/a/b/c/d/e

would return ../..

or for that matter given

/a/b/c/d
/a/b/c/e

would return ../d

?

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If you don't mind passing by converting your Strings into URI then this latter one has the method relativize which should do exactly what you want, take a look here.