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json in java with JSON.simple

Alas answered on June 2, 2022 Popularity 10/10 Helpfulness 4/10

answer json in java with JSON.simple

json in java with JSON.simple

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package com.mkyong;

import org.json.simple.JSONArray;
import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;
import org.json.simple.parser.ParseException;

import java.io.FileReader;
import java.io.IOException;
import java.io.Reader;
import java.util.Iterator;

public class JsonSimpleReadExample {

    public static void main(String[] args) {

        JSONParser parser = new JSONParser();

        try (Reader reader = new FileReader("c:\\projects\\test.json")) {

            JSONObject jsonObject = (JSONObject) parser.parse(reader);
            System.out.println(jsonObject);

            String name = (String) jsonObject.get("name");
            System.out.println(name);

            long age = (Long) jsonObject.get("age");
            System.out.println(age);

            // loop array
            JSONArray msg = (JSONArray) jsonObject.get("messages");
            Iterator<String> iterator = msg.iterator();
            while (iterator.hasNext()) {
                System.out.println(iterator.next());
            }

        } catch (IOException e) {
            e.printStackTrace();
        } catch (ParseException e) {
            e.printStackTrace();
        }

    }


}

Popularity 10/10 Helpfulness 4/10 Language whatever

Source: mkyong.com

Tags: java json whatever

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Contributed on Jun 02 2022

Alas

0 Answers Avg Quality 2/10

json in java with JSON.simple

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