ADF : JSPX and JSFF onPageLoad display Popup
1. JSPX page load
a. <f:view> has beforePhase , afterPhase property.
b. <af: form> -> showPopupBehaviour - onLoad
http://andrejusb.blogspot.in/2012/03/open-adf-popup-on-page-load.html
c. before loading this jspx page -> have method call activity in the taskflow (but by that time page would not have loaded so popup might not display)
2. JSFF page load
a. <af: Popup> -> below that <af: commandButton visible="false" binding="Bean.myButton">
in getter method of myButton -> Popup.show()
[Note : button shoud be below the popup component ]