Here are some navigation shortcuts for Websphere Development Application Studio:

Ctrl+L

Go to line number.

Ctrl+I

Indent the highlighted text.
Ctrl+Q Goto last modified editor position

Ctrl+K

Go to next occurrence of the selected text

Ctrl+Shift+K

Go to previous occurrence of the selected text

Ctrl+F6

Navigate between open Editors (or, files in an editor)

Ctrl+F7

Navigate between open Views

Ctrl+F8

Navigate between open Perspectives
Ctrl+Shift+P Navigating to Matching braces

F12

Jump to the open Editor

Ctrl+Shift+W

List all files open in an editor

Alt+left arrow

Back (last editing position)

Alt+right arrow

Forward (next editing position)