Create Json object and post to URL - Java Network

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Description

Create Json object and post to URL

Demo Code



import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;

import org.json.JSONArray;
import org.json.JSONObject;

public class Main {
    class JThread extends Thread {
        String result = "";
        URL uri;/*from   w w w .  ja v  a 2 s.  co  m*/

        public JThread(String url) throws URISyntaxException,
                MalformedURLException {
            uri = new URL(url);

        }

        @Override
        public void run() {
            try {
                HttpURLConnection con = (HttpURLConnection) uri
                        .openConnection();
                con.setRequestMethod("GET");

                con.connect();
                int status = con.getResponseCode();
                if (status == HttpURLConnection.HTTP_OK) {
                    BufferedReader br = new BufferedReader(
                            new InputStreamReader(con.getInputStream(),
                                    "iso-8859-1"), 1024);
                    StringBuffer sb = new StringBuffer();
                    String line = null;
                    while ((line = br.readLine()) != null) {
                        sb.append(line).append('\n');
                    }
                    br.close();
                    result = sb.toString();
                }

            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            ArrayList<HashMap<String, String>> list = new ArrayList<>();
            JSONObject json = new JSONObject(result);
            JSONArray earthquakes = json.getJSONArray("earthquakes");
            for (Object object : earthquakes) {
                JSONObject e = (JSONObject) object;
                HashMap<String, String> map = new HashMap<>(e.length());
                map.put("datetime", e.getString("datetime"));
                map.put("depth", e.getDouble("depth") + "");
                map.put("lng", e.getDouble("lng") + "");

                map.put("src", e.getString("src"));
                map.put("eqid", e.getString("eqid"));
                map.put("magnitude", e.getDouble("magnitude") + "");
                map.put("lat", e.getDouble("lat") + "");

                list.add(map);
            }

            System.out.println(list);
        }

    }

    public static void main(String[] args) {
        new Main().run();
    }

    private void run() {
        String url = "http://api.geonames.org/earthquakesJSON?formatted=true&north=43&south=33&east=131&west=124&username=mailofnsh";
        try {
            new JThread(url).start();
        } catch (URISyntaxException e) {
            e.printStackTrace();
        } catch (MalformedURLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }

}

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