Show HN: JSON.equals in Java to compare two JSON's | Hacker News Reader

Show HN: JSON.equals in Java to compare two JSON's

tech.blobcity.com

6 pointssanketsarang5 comments

Thought I'd share something I discovered about Json comparison. This simple line also works:

  return jsonObject1.toMap().equals(jsonObject2.equals);

because JsonObject uses HashMap internally which supports equals(). The downside is it would be slower because toMap() creates a copy.

Btw, downloaded java-commons as Maven dependency from JitPack: https://jitpack.io/#blobcity/java-commons

Yes this also works. We were using this for a while until we landed up with very large JSON's. .toMap() is very expensive and takes significantly longer to execute on large JSON's.

Can't one just simply check if the strings are equal?

No string compare does not work, as the order of elements may not be the same so the strings may not be the same. The utility will report both JSON's as equal even if order of elements is different.

Ok cool, thanks for the explanation!

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