Apache HttpClient Official Example - Releasing Resources method - apache

Question

In this official example for Apache HttpClient, there's no mention of releasing request or response objects. Are they released as part of httpclient.close() or releaseResources method needs to be overridden with something?
final CountDownLatch latch2 = new CountDownLatch(1);
final HttpGet request3 = new HttpGet("http://www.apache.org/");
HttpAsyncRequestProducer producer3 = HttpAsyncMethods.create(request3);
AsyncCharConsumer<HttpResponse> consumer3 = new AsyncCharConsumer<HttpResponse>() {
HttpResponse response;
#Override
protected void onResponseReceived(final HttpResponse response) {
this.response = response;
}
#Override
protected void onCharReceived(final CharBuffer buf, final IOControl ioctrl) throws IOException {
// Do something useful
}
#Override
protected void releaseResources() {
}
#Override
protected HttpResponse buildResult(final HttpContext context) {
return this.response;
}
};
httpclient.execute(producer3, consumer3, new FutureCallback<HttpResponse>() {
public void completed(final HttpResponse response3) {
latch2.countDown();
System.out.println(request2.getRequestLine() + "->" + response3.getStatusLine());
}
public void failed(final Exception ex) {
latch2.countDown();
System.out.println(request2.getRequestLine() + "->" + ex);
}
public void cancelled() {
latch2.countDown();
System.out.println(request2.getRequestLine() + " cancelled");
}
});
latch2.await();
} finally {
httpclient.close();
}

Answer 1

One needs to override #releaseResources() only if the consumer makes use of system resources such as files, pipes, etc. If response content is always held in memory it gets GCed the normal way.