Reset Eclipse perspective layout

Open Windows - Perspective - Other - Select Java (default) and open Windows again and select reset perspective

hope you help

From the image provided you do indeed have a minimized perspective stack...it's the far right toolbar at the top of the image that has just the icons for the java and debug perspectives. If you click on its 'restore' button the actual perspective will re-appear.

What it looks like is that you have the 'Welcome' (Intro) screen up and maximized (thus the minimized perspective stack). If you were to click the selected item in that top right toolbar the 'fly out' perspective would go away allowing access to the view's restore (un-maximize) button.

Not sure why the Intro's blank though...;-)