Disappearing Android code

I am using "Hello, Android" 1.5& 1.6 with the 2.1 android Java build. I type

import android.os.Bundle;   

It disappears as soon as I finish typing!! Help, please.?

From stackoverflow Baleisen

• By default Eclipse hides all import statements under a single line.

  Click the + button next to the import you can see and it should show them all.

  From Dave Webb