title: Getting specific element in Json respone without using an external libary
body: <p>I want to create a GitHub update checker which provides the version of the newest release.</p>
  
  <pre><code>public static void main(String[] args) {
      HttpURLConnection httpURLConnection = null;
  
      try {
          httpURLConnection = (HttpURLConnection) new URL("https://api.github.com/repos/MilkBowl/Vault/releases/latest").openConnection();
  
          httpURLConnection.setRequestMethod("GET");            
          httpURLConnection.setRequestProperty("Content-Type", "application/json");
  
          try (final InputStream inputStream = httpURLConnection.getInputStream(); final InputStreamReader inputStreamReader = new InputStreamReader(inputStream); final BufferedReader bufferedReader = new BufferedReader(inputStreamReader)) {
  
          }
      } catch (final IOException exception) {
          exception.printStackTrace();
      } finally {
          if (httpURLConnection != null) {
              httpURLConnection.disconnect();
          }
      }
  }
  </code></pre>
  
  <p>This is what I got so far. It returns this Json response:</p>
  
  <p><a href="https://api.github.com/repos/MilkBowl/Vault/releases/latest" rel="nofollow noreferrer">https://api.github.com/repos/MilkBowl/Vault/releases/latest</a></p>
  
  <p>Now I want to get the "tag_name". How can I do this with plain Java? I do not want to use an external library.</p>