JSON write/read

[quiet sky]

public class Main {
    @SuppressWarnings("unchecked")
    public static void main(String[] args) {
        JSONObject object = new JSONObject();
        object.put("name", "Walter");
        object.put("age", 20);
        object.put("job", "gamer");
        try{
            FileWriter file = new FileWriter("mydata.json");
            file.write(object.toJSONString());
            file.flush();
            file.close();
        }catch (Exception e){
            e.getStackTrace();
        }
    }
}

mydata.json is in the same folder as Main class. Nothing happens.
If this library isn't good, recommend another one please.

[verbal wraith]

Detected code, here are some useful tools:

<@&987246399047479336> please have a look, thanks.

[steel topaz]

wdym nothing happens ? it definitely wrote to a file
also yes, this isn't a good lib, you should use jackson
and also, don't manually close a file, use a try-with-resources... or even better, don't use FileWriter, it's legacy, use Path and Files

[quiet sky]

But file is blank.

[quiet sky]

I'll try the same with Jackson

[steel topaz]

where is the file ?

[gloomy rampart]

You wrote mydata.json is in sams folder as Main.class.
Default save localization is project folder (where is src, target etc.)

[empty anchor]

thats not correct

[gloomy rampart]

I should add in intellij idea 😅

[empty anchor]

it is still not correct to read and write a file in resources

[gloomy rampart]

Really? I'm not sure if we're talking about the same thing

[steel topaz]

Wrong place, look at the folder above

[quiet sky]

But why doesn't it work in the same directory?

[steel topaz]

above

[steel topaz]

because that's how it works

why would it create a file in the source code of your project ?

it doesn't make sense

[quiet sky]

I just found it next to pom.xml. It generates file by itself.

[steel topaz]

yes

[quiet sky]

If i want, why cannot i have ability to do it?

[steel topaz]

It doesn't make sense

Let's say you are making an app

so it ends up into an exe

you are basically saying that you want to add a file into the exe at runtime

[quiet sky]

Is it the Jackson you were talking about? https://github.com/FasterXML/jackson

[quiet sky]

Not that big. If I am just playing around with stuff.

But i totally get your point.

[steel topaz]

yes

[quiet sky]

Ok, i got everything you recommended. Time to try it out. Thank you for help and explanation!

[steel topaz]

jackson works differently

you need to create a class which represents your json

[warm kite]

actually you dont need to

you can use readTree

which will return JsonNode

[steel topaz]

Except that you shouldn't use this

[warm kite]

well im not saying they should use that

just that it exists

imagine you have some giant json youre fetching, but need only 1 field one time, do you deserialize the whole thing into pojo?