Java - REST y aplicación web externa java

URL url = new URL("http://localhost:8080/RESTfulExample/json/product/post");

HttpURLConnection conn = (HttpURLConnection) url.openConnection();

conn.setDoOutput(true);

conn.setRequestMethod("POST");

conn.setRequestProperty("Content-Type", "application/json");

String input = "{\"qty\":100,\"name\":\"iPad 4\"}";

OutputStream os = conn.getOutputStream();

os.write(input.getBytes());

os.flush();

if (conn.getResponseCode() != HttpURLConnection.HTTP_CREATED) {

	throw new RuntimeException("Failed : HTTP error code : "

		+ conn.getResponseCode());

}

BufferedReader br = new BufferedReader(new InputStreamReader(

		(conn.getInputStream())));

String output;

System.out.println("Output from Server .... \n");

while ((output = br.readLine()) != null) {

	System.out.println(output);

}

conn.disconnect();