diff implementation in Java

Question

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!

https://java-diff.dev.java.net/ http://code.google.com/p/java-diff-utills/ http://www.incava.org/projects/java/java-diff/ — Bozho, Jun 09 '10 at 14:30

score 17 · Accepted Answer · answered Jun 09 '10 at 14:28

17

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

It has the following main features:

Diff: Compare two blocks of plain text and efficiently return a list of differences.
Match: Given a search string, find its best fuzzy match in a block of plain text. Weighted for both accuracy and location.
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

answered Jun 09 '10 at 14:28

KushalP

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Exactly what I needed: diff, match and patch. – Olivier Grégoire Jun 09 '10 at 14:43
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github fork of java-diff-utils: https://github.com/KengoTODA/java-diff-utils – Peter Butkovic Jan 17 '17 at 09:43

score 0 · Answer 2 · answered May 14 '15 at 06:06

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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.

answered May 14 '15 at 06:06

amith

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diff implementation in Java

2 Answers2