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package thebestone.vicky.jsondemo;

import android.os.AsyncTask;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;

import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.concurrent.ExecutionException;

public class MainActivity extends AppCompatActivity {

class GetData extends AsyncTask{

@Override
protected String doInBackground(String... strings) {

String result = "";
URL url;
HttpURLConnection urlConnection = null;

try{

url = new URL(strings[0]);
urlConnection = (HttpURLConnection)url.openConnection();
InputStream in = urlConnection.getInputStream();
InputStreamReader reader = new InputStreamReader(in);

int data = reader.read();

while(data != -1){

char ch = (char) data;
result = result + ch;
data = reader.read();
}

return result;

}catch (Exception e) {
e.printStackTrace();
return "Failed";
}
}

@Override
protected void onPostExecute(String s) {
super.onPostExecute(s);

Log.i("DATA FETCHED: ", s);
}
}

public void onClick(View view){

GetData task = new GetData();

task.execute("http://api.openweathermap.org/data/2.5/weather?q=London");

}

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

}
}
< /code>

logcat: < /p>

08-18 19:05:10.478 2380-4307/thebestone.vicky.jsondemo W/System.err: java.io.FileNotFoundException: http://api.openweathermap.org/data/2.5/weather?q=London
08-18 19:05:10.480 2380-4307/thebestone.vicky.jsondemo W/System.err:     at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:250)
08-18 19:05:10.480 2380-4307/thebestone.vicky.jsondemo W/System.err:     at thebestone.vicky.jsondemo.MainActivity$GetData.doInBackground(MainActivity.java:33)
08-18 19:05:10.480 2380-4307/thebestone.vicky.jsondemo W/System.err:     at thebestone.vicky.jsondemo.MainActivity$GetData.doInBackground(MainActivity.java:19)
08-18 19:05:10.481 2380-4307/thebestone.vicky.jsondemo W/System.err:     at android.os.AsyncTask$2.call(AsyncTask.java:305)
08-18 19:05:10.481 2380-4307/thebestone.vicky.jsondemo W/System.err:     at java.util.concurrent.FutureTask.run(FutureTask.java:237)
08-18 19:05:10.481 2380-4307/thebestone.vicky.jsondemo W/System.err:     at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:243)
08-18 19:05:10.481 2380-4307/thebestone.vicky.jsondemo W/System.err:     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
08-18 19:05:10.481 2380-4307/thebestone.vicky.jsondemo W/System.err:     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
08-18 19:05:10.481 2380-4307/thebestone.vicky.jsondemo W/System.err:     at java.lang.Thread.run(Thread.java:761)
08-18 19:05:10.481 2380-2380/thebestone.vicky.jsondemo I/DATA FETCHED:: Failed