title: Where is main() in Android?
body: <p>I am new to Android, and was studying the framework and it compelled me to ask this question. Since we are extending Activity in Android, there has to be <code>main</code> somewhere in <code>Activity</code> or there is an hidden class that <code>Activity</code> implements that contains <code>main</code>. </p>
  
  <p>I looked everywhere but couldn't find it. I would appreciate if any one could give a clear idea on it.</p>