JavaFX/Classes/ApiCall.java

package Classes;

import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import Interfaces.Callback;

public class ApiCall implements Runnable {

	private Callback callback;
	private HttpURLConnection connection;
	private String method;

	public ApiCall(String URL, String method, Callback call) {
		this.callback = call;
		this.method = method;
		try {
			URL url = new URL(URL);
			this.connection = (HttpURLConnection) url.openConnection();
			this.connection.setRequestMethod(method);
			this.connection.setDoInput(true);
			this.connection.setDoOutput(true);
		} catch (IOException e) {
			System.out.println("Impossible d'ouvrir l'URL: "+URL);
		}
	}

	public void addHeaders(HashMap<String,String> map) {
		Iterator it = map.entrySet().iterator();
		while (it.hasNext()) {
			Map.Entry pair = (Map.Entry)it.next();
			this.connection.setRequestProperty((String)pair.getKey(), (String)pair.getValue());
			it.remove(); // avoids a ConcurrentModificationException
		}
	}

	@Override
	public void run() {
		try {
			//Send request
			DataOutputStream wr = new DataOutputStream (connection.getOutputStream ());
			wr.flush ();
			wr.close ();

			//Get Response	
			InputStream is = connection.getInputStream();
			BufferedReader rd = new BufferedReader(new InputStreamReader(is));
			String line;
			StringBuffer response = new StringBuffer();
			while((line = rd.readLine()) != null) {
				response.append(line);
			}
			rd.close();
			
			this.callback.call(response.toString());

		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

	public void send() {
		new Thread(this).start();
	}

}