What string matching algorithm uses the class Matcher?

Hello,

can anyone tell me what string matching algorithm the method .find() in the class Matcher uses?

I need the answer for my diploma thesis ... because i use regular expressions for my implementation ... and want to describe how string matching works in java ...

Best regards

[303 byte] By [p.h.o.e.n.i.xa] at [2007-10-3 9:10:53]