GetRequestCall.java

import java.io.*;
import java.math.*;
import java.security.*;
import java.text.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.function.*;
import java.util.regex.*;
import java.util.stream.*;
import static java.util.stream.Collectors.joining;
import static java.util.stream.Collectors.toList;
import javax.script.*;
import java.net.*;


class Result {

    /*
     * Complete the 'getNumDraws' function below
     *
     * The function is expected to return an INTEGER.
     * The function accepts INTEGER year as parameter.
     */

    public static int getNumDraws(int year) throws IOException{
        final String endPoint = "https://jsonmock.hackerrank.com/api/football_matches?year="+year;
        final int maxScore = 10;
        int totalNumDraws = 0;
        for(int score=0; score<= maxScore; score++){
            totalNumDraws+=getTotalNumDraws(String.format(endPoint + "&team1goals=%d&team2goals=%d", score, score));
        }
        return totalNumDraws;
    }
    
    private static int getTotalNumDraws(String request) throws IOException{
        URL url = new URL(request);
        HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
        httpURLConnection.setRequestMethod("GET");
        httpURLConnection.setConnectTimeout(5000);
        httpURLConnection.setReadTimeout(5000);
        httpURLConnection.addRequestProperty("Content-Type", "application/json");
        
        int status = httpURLConnection.getResponseCode();
        
        InputStream in = (status < 200 || status > 299) ? httpURLConnection.getErrorStream() : httpURLConnection.getInputStream();
        
        BufferedReader br = new BufferedReader(new InputStreamReader(in));
        String responseLine;
        StringBuffer responseContent = new StringBuffer();
        while((responseLine = br.readLine()) != null){
            responseContent.append(responseLine);
        }
        br.close();
        httpURLConnection.disconnect();
        
        ScriptEngineManager manager = new ScriptEngineManager();
        ScriptEngine engine = manager.getEngineByName("javascript");
        
        String script = "var obj = JSON.parse('" + responseContent.toString() + "');";
        script+="var total = obj.total;";
        
        try{
            engine.eval(script);
        }catch(ScriptException ex){
            ex.printStackTrace();
        }
        
        if(null == engine.get("total")){
            throw new RuntimeException("Can't retrieve data !!!");
        }
        
        return  (int) engine.get("total");
    }

}

public class Solution {
// Some trivial code here
}