Google URL Shortener using HttpClient(http://hc.apache.org/httpcomponents-client-ga/)

gistfile1.java

HttpPost post = new HttpPost("https://www.googleapis.com/urlshortener/v1/url?key={your API Key}");
post.setHeader("Content-Type", "application/json");
post.setEntity(new StringEntity("{'longUrl': 'http://www.google.com/'}", "UTF-8"));

HttpResponse response = new DefaultHttpClient().execute(post);

String responseText = EntityUtils.toString(response.getEntity());
System.out.print(responseText);