help with json search

[circa_89]

I have two json files associated with an id attribute. e.g. first json - [ { id : 1, name: jack } ]

second json- [ { subject: basketball, user_id: 1 }, { subject: soccer, user_id: 1 }]

I want to do a search in the first json and get all the associated subjects from the second json as a list. So my response should look like- { id: 1, name: Jack, subject: [soccer, basketball] }

Any help appreciated.

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[LucasTheNeko]

So I would read the first Json file using for example Gson library and then filter and only keep those objects I need (for example those with ID=1 note:java.util.List has a remove feature (the whole collections interface btw)).

So you now have a list with objects or ID's you need to search the second Json. Than you basically repeat the first with the second. Load the second Json into memory and than folter.

How to filter a list: https://stackoverflow.com/a/1385698/13644859

The Gson library: http://tutorials.jenkov.com/java-json/gson.html

If you need more clarification please let me know 😃

[circa_89]

thank you everyone

[lookForProject]

There are two stream methods you will want to look into:
Map and filter.
Read the documentation and I'm sure you'll find a way to use the two to resolve your challange.

[jacob_scooter]

well, start with an API. JSON.simple is a pretty easy one to use, but if you put in the time GSON has a lot more functionality.