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Editorial Team
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Asked: 2026-05-24T04:10:27+00:00

Let’s say I have a JSONObject in GWT that looks like this: {name1:value1, name2:value2}

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Let’s say I have a JSONObject in GWT that looks like this: {"name1":value1, "name2":value2}. Is there a way to remove the "name2":value2 key/value pair and change this object to {"name1":value1}? I have not found any methods that help with this approach in the GWT Javadoc.

I know there are workarounds to this, of course. Since my JSONObject is small, I am currently making a new one and putting in it all the key/value pairs other than the one I want to remove. But this won’t work when I plan to pass in the JSONObject to a child function; since only the JSONObject’s reference is passed in Java, I need a mutator function to actively change what the method parameter’s JSONObject points to. In the worse case, I could convert the JSONObject to a String and regexp out what I don’t want. But this seems prone to error and ugly. Any suggestions?

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1 Answer

  1. Editorial Team

    Actually, put()ing a null (as opposed to a JSONNull) value will delete the value for the given key.

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