Reading JSON with Java

JSON is a "fat-free alternative" of XML format, or the structured dataset format.  Here is a Java code that reads JSON data supplied by a web service.  Replace the URL and perhaps the API key if the site requires it, and the app will parse the JSON response.

First of all, edit your POM (pom.xml).

        <dependency>
            <groupId>com.github.cliftonlabs</groupId>
            <artifactId>json-simple</artifactId>
            <version>2.1.2</version>
        </dependency>

Here is how you can parse the JSON.

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.URL;

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

@SuppressWarnings("deprecation")
public class NewsApp {
    public static void main(String args[]) {
        JSONParser parser = new JSONParser();
        String urlStr="https://newsapi.org/v1/sources";
       
        try {
            URL url = new URL(urlStr);
            try (BufferedReader reader = new BufferedReader(new InputStreamReader(url.openStream()))) {
                JSONObject obj = (JSONObject) parser.parse(reader);
                JSONArray article= (JSONArray) obj.get("sources");
                for(int   i=0;i<article.size();i++){
                    JSONObject item=(JSONObject)article.get(i);
                    System.out.println(item.get("name"));
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}