Follow the below step to install Eclipse e4 tools.
->Help->Install New Software
-> choose the current eclipse version “Mars …..” in Work with”
-> search “e4 tools”
-> tick checkbox -> next -> next -> finish
Follow the below steps to create a simple Eclipse RCP example.
-> Window->Open Perspective->Others…-> Plug-in Development
-> File-> New -> Plug-in Project
-> enter Project name: com.example.rcpapp
-> Next
-> check “Yes” in Rich Client Application
-> finish
-> Select Template “Hello RCP”
-> Next
-> Finish
-> open MANIFEST.MF -> click “Launch as Eclipse application"
