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I'm looking for a diff implementation in Java. I've seen that Python has its own SequenceMatcher (with difflib), which is exactly what I need... in Java.

Is there any portage? Or is there any other class/library that performs the same in Java?

If not, where can I find the source code of that difflib (if free as in speech) to make my own implementation of SequenceMatcher in Java ?

Unfortunately, Apache Commons Lang doesn't help me much.

Thanks!

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This library seems to be what you're after: google-diff-match-patch.

It has the following main features:

  1. Diff: Compare two blocks of plain text and efficiently return a list of differences.
  2. Match: Given a search string, find its best fuzzy match in a block of plain text. Weighted for both accuracy and location.
  3. Patch: Apply a list of patches onto plain text. Use best-effort to apply patch even when the underlying text doesn't match.

In case you want an alternative, you could also try this: java-diff-utils

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Exactly what I needed: diff, match and patch.
github fork of java-diff-utils: github.com/KengoTODA/java-diff-utils
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Hi You can run a MR job which can use https://code.google.com/p/google-diff-match-patch/ to do the required job. I dont feel there are any tools out of the box to do your job.

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