Remove a pattern from a String containing varying alphanumeric

Question

I am getting a String like below:

...,{foo.....}","gm:every":["one:varyingalphanumberic193alpha"],"{bar...},....

Now, checking if Pattern exists in the string, I want to get rid of this pattern - "gm:every":["one:varyingalphanumberic193alpha"], so that my string becomes:

...,{foo.....}","{bar...},....

I tried to follow this - How to remove a particular pattern from a String in Java? but in my case the given pattern can be anywhere in the string and also contains varying alpha-numeric characters. Feeling clueless on how to compile it. Any pointer in this regard, will be greatly appreciated.

what characters of the part you want to remove are fixed and what part can vary ? You can define a regex to find the parts to remove and replace them by nothing — Conffusion, Oct 20 '21 at 16:17
`,"gm:every":["one:..."],` are fixed. Also I want to check if that pattern exists or not before removing it. — Ajay Kumar, Oct 20 '21 at 16:18
I don't understand. Is this just a member of the JSON? Find it and remove it. — Sotirios Delimanolis, Oct 20 '21 at 16:20

score 1 · Answer 1 · answered Oct 20 '21 at 16:48

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Yes its a member of JSON

import org.json.*;

JSONObject jsonObject = new JSONObject(jsonString);
jsonObject.remove("gm:every");

jsonObject.toString();

answered Oct 20 '21 at 16:48

Rukshan Jayasekara

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This is perfectly fine @Rukshan. But as we discussed initially, I have to deal with the String only as it is passed to multiple teams. So every team is handling that String differently. Thanks a lot anyways. – Ajay Kumar Oct 20 '21 at 17:05

score 1 · Accepted Answer · answered Oct 20 '21 at 16:51

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String text = "...,{foo.....}\",\"gm:every\":[\"one:varyingalphanumberic193alpha\"],\"{bar...},....";

text = text.replaceAll("\"gm:every\":\\[\"one:[\\s\\S]*],", "");

System.out.println(text);

answered Oct 20 '21 at 16:51

philoopher97

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Works great. But one doubt, what is `\\s\\S` used for? – Ajay Kumar Oct 20 '21 at 17:02
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In regex, `\s` matches any white-space character & `\S` matches any non-white-space character. So `\s\S` will match any character. – philoopher97 Oct 20 '21 at 17:09

Remove a pattern from a String containing varying alphanumeric

2 Answers2