Java String::Compare

[gcardinal]

Hello!

I'm working on text processing/analyze project and I really need a string compare function that will work not only tell if 2 strings are equal but will also show result is in percentage. If the strings are exactly equal, it would return 1, if they have nothing in common, it would return 0.

Something like this Perl script:
String::Compare - Compare two strings and return how much they are alike - search.cpan.org

Is there anything like it on Java?

Thank you,
gcardinal