The following navigation, activation and selection keyboard bindings on JTextPane need verification for proper operation and key binding sequences.

JTextPane
Navigate in - Tab
Navigate out - Ctrl+Tab, Shift+Ctrl+Tab (reverses direction)
Navigate within -
U/D Arrow = Move focus up/down one line
L/R Arrow = Move focus l/r one component or character
PgUp, PgDn = Move up/down one JViewport view, input
focus set to first character or object
in view
home = move to beginning of line, input focus
set to first character or object in view
end = move to end of row or line, input focus
set to last character or object in line
Ctrl+R/L arrow = Move to next/Previous word
Ctrl+home = move to beginning of data, input focus set
to first character or object in text area
Ctrl+end = move to end of data, input focus set to
last character or object in text area
Ctrl+page down = move right one JViewport view, input
focus set to first character or object
in view
Ctrl+page up = move left one JViewport view, input
focus set to first character or object
in view
Selection -
Ctrl+A, Ctrl+/ = Select all
Ctrl+\ = De-select all
Shift+down = extend selection down
Shift+up = extend selection up
Shift+home = extend selection to beginning of line
Shift+end = extend selection to end of line
Ctrl+Shift+home = extend selection to beginning of data
Ctrl+Shift+end = extend selection to end of data
Shift+left = extend selection left
Shift+right = extend selection right
Shift+page down = extend selection down one view
Shift+page up = extend selection up one view
Ctrl+Shift+R/L arrow = extend selection to the next/previous
word
Ctrl+Shift+page down = extend selection right one view
Ctrl+Shift+page up = extend selection left one view