title: Call SimpleDateFormat From JNI
body: <p>im not much familiar with Jni</p>
  <p>can anyone help to convert this code in Jni.</p>
  <pre><code>public static void getTime(String zone,String format){
      SimpleDateFormat dateFormat = new SimpleDateFormat(format);
      dateFormat.setTimeZone(TimeZone.getTimeZone(zone));
      String statusDate = dateFormat.format(new Date());
      System.out.println(statusDate);
  }
  </code></pre>