modified indx and jsf pages for class demo and created service classes and interface
modified indx and jsf pages for class demo and created service classes and interface
modified indx and jsf pages for class demo and created service classes and interface
modified indx and jsf pages for class demo and created service classes and interface
Revert "modified indx and jsf pages for class demo and created service classes and interface"

This reverts commit 834a3d8cf64faa8873f41c58f515686156b481cf.