org.apache.http packages removed in API level 23. What is the alternative?

Question

After adding following changes in by build.gradle right after updating to latest android API level 23 (Marshmallow) all org.apache.http classes is not working.

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.0"

    defaultConfig {
        applicationId "com.myapp.package"
        minSdkVersion 15
        targetSdkVersion 23
        versionCode 2
        versionName "1.1"
    }
}

I checked "Android API Differences Report" here. Its says all Classes of org.apache.http has been removed. Can someone suggest what is the alternative ?

Here is my code :

try {

            DefaultHttpClient httpClient = new DefaultHttpClient();
            HttpPost httpPost = new HttpPost(address);

            httpPost.setEntity(new StringEntity("{\"longUrl\":\""+longUrl+"\"}"));
            httpPost.setHeader("Content-Type", "application/json");
            HttpResponse httpResponse = httpClient.execute(httpPost);

            HttpEntity httpEntity = httpResponse.getEntity();
            is = httpEntity.getContent();

        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

Answer 1

See the Behavior Changes at Android Developers where it says that:

Android 6.0 release removes support for the Apache HTTP client. If your app is using this client and targets Android 2.3 (API level 9) or higher, use the HttpURLConnection class instead. This API is more efficient because it reduces network use through transparent compression and response caching, and minimizes power consumption. To continue using the Apache HTTP APIs, you must first declare the following compile-time dependency in your build.gradle file:

android {
    useLibrary 'org.apache.http.legacy' 
}