windows:
Ctrl-N Class... (find by name)
Ctrl-Shift-N File... (find by name)
Ctrl-Shift-Alt-N Symbol... (find by name)
Ctrl-G Line... (goto line)
Ctrl-H Type hierarchy (hierarchy)
Ctrl-Shift-H Method hierarchy (hierarchy)
Ctrl-Alt-H Call hierarchy (hierarchy)
Ctrl-Q Quick documentation
Ctrl-Alt-I Auto-indent lines (indent)
Ctrl-Alt-L Reformat code (line up)
Ctrl-Alt-O Optimize imports (optimize)
Ctrl-/ Comment with line comment (//)
Ctrl-Shift-/ Comment with block comment (/*...*/)
Ctrl-W Select word or block (word)
Ctrl-D Copy line (duplicate line, yyp)
Ctrl-X Cut line (dd)
Ctrl-U Uppercase/lowercase (upper)
Ctrl-J Insert live template
Ctrl-Alt-J Surround with live template
Ctrl-Alt-T Surround with (template)
Ctrl-Shift-J Join lines (join)
Ctrl-E Recent files (editions)
Ctrl-Shift-E Recently changed files (editions)
Alt-Shift-C Recent changes (changes)
Ctrl-B Delcaration
Ctrl-Shift-B Type declaration
Ctrl-Alt-B Implementation(s)
Ctrl-P Parameter info (parameter)
Ctrl-Space Basic completion
Ctrl-Shift-Space Smart completion
Ctrl-Alt-Space Completion lookup
Alt-Enter Auto-complete
Alt-Insert Generate...
Ctrl-Shift-Up/Down Move statement up/down
Alt-Shift-Up/Down Move line up/down
Ctrl-Up/Down Scroll up/down
Alt-Up/Down Previous/next method
F2 Next highlighted error
Shift-F2 Previous highlighted error
Ctrl-F Find
Ctrl-R Replace
F3 Next match
Shift-F3 Previous match
F4 Jump to source
Ctrl-Alt-Shift-T Refactor this
F5 Refactor copy
F6 Refactor move
Ctrl-F6 Refactor change signature
Shift-F6 Refactor rename
Alt-Delete Refactor safe delete
Ctrl-Alt-V Refactor extract variable
Ctrl-Alt-F Refactor extract field
Ctrl-Alt-P Refactor extract parameter
Ctrl-Alt-M Refactor extract method
Ctrl-Alt-N Refactor inline