| Autocomplete
|
Ctrl-Space asks Eclipse to help
you complete some code you've started. Eclipse can complete lots
of things:
- variables, method names, class names
- ArrayL Ctrl-Space
--> ArrayList
- random.next
Ctrl-Space --> random.nextInt
- constructor and method parameters
- new ArrayList(
Ctrl-Space --> popup menu of ArrayList's constructors
- random.nextInt(
Ctrl-Space --> tooltip showing nextInt's
parameters
- methods to override
- class Foo extends
Bar { Ctrl-Space --> menu of Bar's methods that can be
overridden
|
| Organize import statements
|
Ctrl-Shift-O (that's O as in
Organize) automatically updates the import statements at the top of
your class, adding classes that need to be imported from other packages
and removing classes that you're no longer using. If a class name
is ambiguous — e.g., List
might be either java.util.List
and java.awt.List — then
Eclipse pops up a dialog asking you which one you want.
|
| Look up Java API documentation
|
Shift-F2 when your cursor is on
a class or method name (You have to configure this feature with
the location of the API documentation).
|
| Comment/uncomment a
block of code
|
Ctrl-/ comments the highlighted
region.
Ctrl-\ uncomments the highlighted region.
|
| Renaming or moving packages,
classes, methods, and variables (updates all references)
|
Alt-Shift-R (Rename) or Alt-Shift-V (Move) when your cursor is
over the package/class/method/variable. Equivalently, right-click on any package,
class, method or variable in the Package Explorer and select Refactor » Rename to rename it or
Refactor » Move to put it in another package or class.
|
| Delete current row
|
Ctrl-D when cursor
is in row to be deleted.
|
| Mark TODO items for
yourself
|
Start a comment with TODO to
leave yourself a note about a piece of code that you need to fix.
Eclipse will automatically put the comment in the Tasks pane, the pane
where it shows your compile errors. (If you don't see the Tasks
pane, use Window » Show View » Tasks.) You can jump to TODO
items or compile errors in your code quickly by double-clicking on them
in the Tasks pane.
|
| Generate get() and
set() methods
|
Make sure the fields for which
you would like to create get() and set() methods are declared in the
class, then right-click and use Source »
Generate Getter and Setter.
|
| Run classes or unit tests that
you've run recently
|
The little "play" icon
 on
the Eclipse toolbar runs the last class or unit test you just
ran. Pull down its menu for your recent history of runs.
|
| Turn off console autoraise
|
When a program run under Eclipse
writes to standard out (say, via println), Eclipse raises the
"console" perspective. This may be annoying when you run tests, or
when you use Continuous Testing. To turn this off, go to
Window »
Preferences » Run/Debug »
Console and uncheck “Show when program writes to
standard out”.
|
| Emacs key bindings |
If you prefer
to use Emacs key bindings while editing code, do:
Window » Preferences...»
General » Keys » Modify and set
Scheme to Emacs |