title: custom annotation processing
body: <p>I need a help on java custom annotations, I know how to create annotations but I do not know how to process that.<br>
  I have gone through some information where I saw APT which is <code>com.sun.mirror.*</code> and another <code>javax.annotation.processing.*</code>, I got confused between two.</p>
  
  <p>Can any one please guide me to process custom annotations and provide useful link.</p>