Eclipse has an MDI structure (Multi Document Interface), so the search panel, the package explorer and the code editor can all be open in one window, but I haven\'t found a keyb
There are two ways to do it.
One is how @VonC did it, in an earlier reply; using CTRL+SHIFT+E which opens a box containing all the panes with their paths.
The other one is to simply use CTRL+E, which will open a pop-up just over your cursor containing the list of panes open. Parse using arrows and ENTER