Hello all, I am working on a complex JSON file. I load the entire file (list of items A and each item has different JSON-Arrays and JSON-Objects in it). I don’t copy it into an Array of a class but just work with the loaded entire JSON file. Is that ok/recommended? When displaying the file, I li…

Keep in mind what a Comparator does. List<Foo> myfoos; Comparator<Foo> fooComp; myfoos.sort(fooComp); // now your list of Foos is sorted sort() on a list of Foos takes a Comparator that works on pairs of individual Foos, Foo a, Foo b – the sort method uses the Comparator throughout the list until…

I suggest you look into comparators . If you can make a comparator that takes in your objects or arrays and reduces it to a value then it would be fairly simple to sort numerically using Collections.sort(). Not entirely sure how your data is coming in and haven’t used these in a while so I don’t thi…

Thanks, but I am not sure, this applies. As I tried to say, I don’t use a class but keep all data in the JSON Object.

Can you give a sample of an equivalent structured JSON, showing at least two IDs? I agree that Comparator is probably the way to go. Depending on your data structure, something like: create a Comparator that checks two JSONObjects and returns the difference of their id fields. load your JSONArray…

AD 1 Up to now I just work with the JSON object. I don’t have a class / objects/ Arraylist of it. Not sure what you mean? Can I say Arraylist <JSONOBJECT> arrlist1 = new Arraylist (); Do you mean this? AD 3 Do I rebuild the entire list from scratch?

See also [image] Can I make a small windows app for taking time and log production times? Project Guidance here is a typical json that results [ { "number": "0", "id": 0, "article": "Climate", "events": [ { "date": "11/09/2019", "…

That doesn’t work at all Can you please post a simple example?

[image] jeremydouglass: Can you give a sample of an equivalent structured JSON, showing at least two IDs? Are you trying to sort the JSON objects in your other linked post by their number keys?

Solved (I sorted a more simple ArrayList toolTimers first instead of sorting the JSON. ) import java.util.Collections; import java.util.Comparator; ... // vars for measuring Time (Space Bar and e) ArrayList<ToolTimer> toolTimers = new ArrayList<ToolTimer>(); ..... // this sorts Colle…

(I sorted a more simple ArrayList toolTimers first instead of sorting the JSON. ) thank you very much!

How can I sort JSON by ID?

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Chrisir December 2, 2019, 11:55am 6

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How can I sort JSON by ID?

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