title: Locale - how to get case-sensitive value?
body: <p>I have code like this:</p>
  
  <pre><code>import java.util.Locale;
  Locale locale = new Locale("en_US");
  </code></pre>
  
  <p>When I wrote:</p>
  
  <pre><code>System.out.println(locale.toString());
  </code></pre>
  
  <p>it returns </p>
  
  <pre><code>en_us
  </code></pre>
  
  <p>not</p>
  
  <pre><code>en_US
  </code></pre>
  
  <p>is any way to get case-sensitive value? </p>