Can i add two compnents page in a installer
 

Welcome Page
License Page
page for components
page for components
page for Directory selection
page for installation
finish page
unistallation welcome page
unistallation finish page

How to control the two components page. can i handle the event on the pages i mean if i want to call the java class on clicking the Next button on the components page.

To control moving between pages you have the page callback functions. The pre callback is called before the page is created, allowing you to skip it. The show callback is called after the page is created, allowing you to modify its content before it's displayed. The leave callback is called before is page is left, allowing you to act on the page results and keep the user in that page.