string - Java library for free-text diff -

I need to match two nearly-same long frittest strings; That is, wherever possible, to get the index-to-index communication.

Because it is a freestext, it should not be on a comparison line, as the code is different.

Any suggestions for Java libraries?

A simple example (In real life, of course, there will be no additional white space to make things high, and there may be completely complex challenges such as moving around the entire block.) < / P>

  Quick brown fox jumped on lazy dog ​​||||||||||||| ||||||||||||||||||||||||| ||||| Quick yellow fox jumped well on breed dog  

This can be a good one Others?