title: There was protected in a file created automatically what was private
body: <p>When I make a new Android Application Project 
  I see the automatic generate <code>MainActivity.java</code> file.</p>
  
  <p>Why was the "<code>OnCreate</code>" protected</p>
  
  <p>I remember this was private. I don't understand. why made this?</p>
  
  <p>For example this:</p>
  
  <pre><code>public class MainActivity extends Activity {
  
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_main);
      }
  
      @Override
      public boolean onCreateOptionsMenu(Menu menu) {
          // Inflate the menu; this adds items to the action bar if it is present.
          getMenuInflater().inflate(R.menu.main, menu);
          return true;
      }
  
  }
  </code></pre>