title: Additional debug option for runnable jar using command prompt
body: <p>I know that the <code>java -jar filename.jar</code> is used for executing the jar file using command prompt, but could anyone please explain the following command:</p>
  
  <pre><code>java -jar filename.jar -debug
  </code></pre>
  
  <p>What is the exact use of the <code>-debug</code> in the above command?</p>